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Thompson L, Patrianakos T, Garcia J, Wadhwa A, Yang E, Thomas C, Schneider R, Stern H, Palma C, Hill K, Barquet V, Anderson-Nelson S, McMahon K, Patel U, Ghadiali Q, Danek D, Larsen B, Wong A, Dawood S, Ludington M, Zhang G, Garakani R, Dwarakanathan S, Simotas A, Sangal K, Phelps P, Ashourian T, Darwish D, Bamba S, Zein M, Nichols J, To J, Sarmiento A, Chaudhary S, Breshears B, Nelson J, Anderson-Nelson S, Giovingo M. Autoimmune Disorders and the Eye. Dis Mon 2024:101711. [PMID: 38609837 DOI: 10.1016/j.disamonth.2024.101711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/14/2024]
Affiliation(s)
- Lisa Thompson
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Thomas Patrianakos
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - James Garcia
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Arshia Wadhwa
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Ellen Yang
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Catherine Thomas
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Robin Schneider
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Hudson Stern
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Camille Palma
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Kyle Hill
- Saint Louis University School of Medicine, St. Louis, MO
| | - Viviana Barquet
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Susan Anderson-Nelson
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | | | - Umangi Patel
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Quraish Ghadiali
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Dagmara Danek
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Brian Larsen
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Anthony Wong
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Sherif Dawood
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | | | - George Zhang
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Roya Garakani
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | | | - Athina Simotas
- Midwestern University School of Medicine, Downers Grove, IL
| | - Kajal Sangal
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Paul Phelps
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Taylor Ashourian
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Dana Darwish
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Sonya Bamba
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Michael Zein
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Jeffrey Nichols
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Josiah To
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Angelo Sarmiento
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Shweta Chaudhary
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Brett Breshears
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Josh Nelson
- Des Moines University Medicine and Health Sciences
| | - Susan Anderson-Nelson
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL
| | - Michael Giovingo
- Department of Ophthalmology, John H. Stroger Jr. Hospital of Cook County, Chicago, IL.
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Hawthorn B, Kawa B, Cavenagh T, Katsari S, Lohan R, Gonsalves M, Ratnam L, Patel U, Morgan R. Weeping sponge kidney: an unusual phenomenon that should be considered in cases of severe renal haemorrhage. Clin Radiol 2023; 78:e1010-e1016. [PMID: 37806816 DOI: 10.1016/j.crad.2023.07.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 07/21/2023] [Indexed: 10/10/2023]
Abstract
AIM To describe the clinical presentation, imaging evaluation, endovascular management, and outcomes of multifocal renal capsular haemorrhage, "weeping sponge kidney", and to identify associated risk factors and the pathophysiological mechanism behind this condition. MATERIALS AND METHODS This is a case series in which clinical information for each of the cases was collected retrospectively from electronic patient notes as well as the radiology information and picture archiving and communication systems. RESULTS Four consecutive cases were included in the series. All of the cases were treated successfully with embolisation. Three of the four patients had chronic renal failure with renal atrophy, which are patient factors that appear to be associated with multifocal renal capsular haemorrhage. Based on the procedural findings and the published literature, a pathophysiological mechanism is described to explain this condition and the relevance of the collateral arterial supply to the kidney in such cases is discussed. CONCLUSION Small subcapsular haematomas are usually self-limiting but in patients with renal failure, there may be an increased risk of developing a weeping sponge kidney, which can be life-threatening. The endovascular treatment for multifocal haemorrhage differs from that for a single bleeding point, especially if preservation of renal function is not a priority.
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Affiliation(s)
- B Hawthorn
- Department of Radiology, St George's University Hospitals NHS Foundation Trust, Blackshaw Road, London SW17 0QT, UK.
| | - B Kawa
- Interventional Radiology, Tunbridge Wells Hospital, Tonbridge Road, Tunbridge Wells TN2 4QJ, UK
| | - T Cavenagh
- Department of Radiology, Royal Cornwall Hospital, Treliske, Truro TR1 3LJ, UK
| | - S Katsari
- Department of Radiology, Nicosia General Hospital, Nicosia-Limassol Old Road 215, 2029, Strovolos, Nicosia, Cyprus
| | - R Lohan
- Department of Diagnostic Imaging, National University Hospital, Singapore
| | - M Gonsalves
- Department of Radiology, St George's University Hospitals NHS Foundation Trust, Blackshaw Road, London SW17 0QT, UK
| | - L Ratnam
- Department of Radiology, St George's University Hospitals NHS Foundation Trust, Blackshaw Road, London SW17 0QT, UK
| | - U Patel
- Department of Radiology, St George's University Hospitals NHS Foundation Trust, Blackshaw Road, London SW17 0QT, UK
| | - R Morgan
- Department of Radiology, St George's University Hospitals NHS Foundation Trust, Blackshaw Road, London SW17 0QT, UK
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Abstract
Carcinoma ex pleomorphic adenoma (CEPA) of the lacrimal gland is a rare malignant tumor that arises from a pre-existing pleomorphic adenoma. Lacrimal gland CEPA with mucoepidermoid histological subtype is exceedingly rare. Diagnosis can be aided by radiographic findings, though the gold standard is histopathological analysis following excisional biopsy. Management options include complete surgical excision with or without adjuvant radiation therapy based on tumor grade and invasiveness. We present a 76-year-old woman with 6 months of diplopia and unilateral proptosis. Her initial exam was remarkable for hypoglobus, proptosis, and limited elevation of the right eye. Computed tomography (CT) scan demonstrated a superior, well-circumscribed, extraconal orbital mass. An excisional biopsy was performed, and histopathological findings were consistent with mucoepidermoid carcinoma ex pleomorphic adenoma with positive margins in the tumor capsule. The patient received radiation therapy and remains markedly improved with no disease recurrence at 5 months post-operatively.
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Affiliation(s)
- Nicole J Topilow
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Shanlee M Stevens
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Ying Chen
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Umangi Patel
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
- Florida Lions Ocular Pathology Laboratory, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Sander R Dubovy
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
- Florida Lions Ocular Pathology Laboratory, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Thomas E Johnson
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, USA
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Stevens SM, Reyes-Capo DP, Patel U, Choudhary A, Khzam RA, Tang V, Galor A, Karp CL, Dubovy S. Clinical and Optical Coherence Tomography Comparison Between Ocular Surface Squamous Neoplasia and Squamous Metaplasia. Cornea 2023; 42:429-434. [PMID: 35439777 PMCID: PMC9547982 DOI: 10.1097/ico.0000000000003039] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 02/17/2022] [Indexed: 11/26/2022]
Abstract
PURPOSE The purpose of this study was to compare the clinical characteristics and high-resolution optical coherence tomography (HR-OCT) findings between corneal squamous metaplasia and ocular surface squamous neoplasia (OSSN). METHODS A retrospective case-control study of 8 patients, 4 with histologically confirmed squamous metaplasia and 4 with histologically confirmed OSSN, who presented to the Miami Veterans Administration Medical Center and Bascom Palmer Eye Institute between 2016 and 2020 was performed. Clinical characteristics, HR-OCT findings, and pathology were evaluated and compared. RESULTS Four patients with squamous metaplasia and 4 with OSSN were evaluated. In the metaplasia group, 75% were male, 2 were White, and 2 were Black. In the OSSN group, all 4 were White males. All lesions were opalescent and occurred at the limbus; however, the borders were more smooth and rounded in the metaplastic lesions compared with OSSN. HR-OCT findings were indistinguishable between the 2 groups. CONCLUSIONS There is overlap in clinical characteristics and HR-OCT findings between corneal squamous metaplasia and OSSN, highlighting one limitation of HR-OCT. As such, if a corneal opacity has some but not all HR-OCT findings of OSSN, squamous metaplasia should also be considered. A biopsy may be indicated to further evaluate and guide treatment.
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Affiliation(s)
- Shanlee M. Stevens
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
| | | | - Umangi Patel
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
| | - Anjalee Choudhary
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
| | - Rayan Abou Khzam
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
| | - Vincent Tang
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
| | - Anat Galor
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
- Miami Veterans Administration Medical Center, Miami, FL, USA
| | - Carol L. Karp
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
| | - Sander Dubovy
- Department of Ophthalmology, Bascom Palmer Eye Institute, Miami, Florida, USA
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Patel U, Mattingly T, Fusco D, Drouin A, Lockhart A, Struttmann E. Development of monkeypox treatment roll-out protocol in Louisiana. Am J Med Sci 2023. [DOI: 10.1016/s0002-9629(23)00310-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Prince R, Stepan K, Patel U, Yadav P, Thomas T, Nesbit E, Mittal B, Lorch J, Samant S, Gharzai L. The Effect of Tumor Margin Status on Progression-Free Survival (PFS) in Patients with Oropharyngeal Squamous Cell Carcinoma (OPSCC) after Transoral Robotic Surgery (TORS). Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Patel U, Guruswamy T, Krzysko AJ, Charalambous H, Gades L, Wiaderek K, Quaranta O, Ren Y, Yakovenko A, Ruett U, Miceli A. High-resolution Compton spectroscopy using x-ray microcalorimeters. Rev Sci Instrum 2022; 93:113105. [PMID: 36461526 DOI: 10.1063/5.0092693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Accepted: 10/23/2022] [Indexed: 06/17/2023]
Abstract
X-ray Compton spectroscopy is one of the few direct probes of the electron momentum distribution of bulk materials in ambient and operando environments. We report high-resolution inelastic x-ray scattering experiments with high momentum and energy transfer performed at a storage-ring-based high-energy x-ray light source facility using an x-ray transition-edge sensor (TES) microcalorimeter detector. The performance was compared with a silicon drift detector (SDD), an energy-resolving semiconductor detector, and Compton profiles were measured for lithium and cobalt oxide powders relevant to lithium-ion battery research. Spectroscopic analysis of the measured Compton profiles demonstrates the high-sensitivity to the low-Z elements and oxidation states. The line shape analysis of the measured Compton profiles in comparison with computed Hartree-Fock profiles is usually limited by the resolution of the semiconductor detector. We have characterized an x-ray TES microcalorimeter detector for high-resolution Compton scattering experiments using a bending magnet source at the Advanced Photon Source with a double crystal monochromator, providing monochromatic photon energies near 27.5 keV. The momentum resolution below 0.16 atomic units (a.u.) was measured, yielding an improvement of more than a factor of 7 over a state-of-the-art SDD for the same scattering geometry. Furthermore, the lineshapes of narrow valence and broad core electron profiles of sealed lithium metal were clearly resolved using an x-ray TES compared to smeared and broadened lineshapes observed when using the SDD. High-resolution Compton scattering using the energy-resolving area detector shown here presents new opportunities for spatial imaging of electron momentum distributions for a wide class of materials with applications ranging from electrochemistry to condensed matter physics.
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Affiliation(s)
- U Patel
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - T Guruswamy
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - A J Krzysko
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - H Charalambous
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - L Gades
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - K Wiaderek
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - O Quaranta
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Y Ren
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - A Yakovenko
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - U Ruett
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - A Miceli
- X-ray Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
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Watermann M, Berilgen J, Dinh J, Patel U, Mirkovic N, Gourley R, Sait A, Mani S. Considerations for Establishing a Theranostic Treatment Site. Int J Radiat Oncol Biol Phys 2022. [DOI: 10.1016/j.ijrobp.2022.07.1721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Stevens SM, Ohana O, Patel U, Tse BC. Use of Porcine Urinary Bladder Matrix in Socket Reconstruction After Pediatric Orbital Exenteration. Ophthalmic Plast Reconstr Surg 2022; 38:e133-e136. [PMID: 35420582 DOI: 10.1097/iop.0000000000002179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Reconstruction options after orbital exenteration can be challenging, time-consuming, and require intensive postoperative care. Engineered dermal acellular matrices offer a quick and easy option for wound healing that has proven to be successful in various settings. Specifically, the porcine urinary bladder matrix has demonstrated success in periocular and orbital wound healing. This report describes a pediatric patient who underwent repair with porcine urinary bladder matrix after orbital exenteration for recurrent alveolar rhabdomyosarcoma. The patient did not require any additional reconstructive procedures. To our knowledge, this is the youngest patient to receive a porcine urinary bladder matrix after exenteration.
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Affiliation(s)
- Shanlee M Stevens
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, Florida, U.S.A
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Dorkhom N, Ragoonath-Cameron D, Bahra S, Patel U, Phoenix V. 83P The educational impact of a curriculum for oncologists on the latest developments in the use of CDK4/6 inhibitors in HR+/HER2- early and metastatic breast cancer. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.03.098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Rohowetz LJ, Patel NA, Quan AV, Fan KC, Yannuzzi NA, Reyes-Capó DP, Laura D, Ansari ZA, Patel U, Dubovy SR, Flynn Jr. HW. Agrobacterium radiobacter Endophthalmitis Associated with Baerveldt Tube Exposure. Case Rep Ophthalmol 2021; 12:921-926. [PMID: 35082649 PMCID: PMC8739643 DOI: 10.1159/000516664] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 04/17/2021] [Indexed: 11/28/2022] Open
Abstract
Agrobacterium radiobacter is a Gram-negative bacillus and a rare cause of endophthalmitis. An 85-year-male presented with late-onset endophthalmitis associated with exposure of an inferonasal Baerveldt tube. The patient was initially treated with anterior chamber paracentesis and intravitreal antibiotics. Aqueous humor culture revealed A. radiobacter resistant to cefazolin, ceftazidime, amikacin, tobramycin, and trimethoprim-sulfamethoxazole. Subsequently, the patient underwent explantation of the glaucoma drainage implant (GDI). After initial improvement, the patient had clinical worsening and was diagnosed with recurrence. Subsequent treatment involved explantation of the second GDI in addition to pars plana vitrectomy with silicone oil infusion, intraocular lens removal, and administration of intravitreal antibiotics. Visual acuity improved but remained at count fingers at 2 weeks. This is the first reported patient with A. radiobacter endophthalmitis associated with an exposed GDI. This report illustrates the resistant nature of this organism in addition to the efficacy of silicone oil administration and intraocular prosthesis explantation.
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Zein M, Theotoka D, Wall S, Galor A, Cabot F, Patel U, Dubovy S, Karp CL. Silk Suture Granuloma 37 Years After Scleral Buckle Surgery: A Case Report. Cornea 2021; 40:1357-1359. [PMID: 34481413 PMCID: PMC8418642 DOI: 10.1097/ico.0000000000002637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/05/2020] [Indexed: 11/26/2022]
Abstract
PURPOSE To present a rare presentation of pyogenic granuloma arising almost 4 decades after a scleral buckle for retinal detachment. METHOD We describe the clinical presentation, diagnostic workup, and management of a suspicious conjunctival lesion in an immunocompromised patient. We report the histopathological findings and the postoperative outcome. RESULTS A 58-year-old man with human immunodeficiency virus presented for evaluation of a possible malignant conjunctival lesion in the left eye. The patient reported that the lesion had appeared 1.5 months before presentation with significant growth over the past month. The patient denied any trauma to the eye other than an ocular history of retinal detachment repair with scleral buckle 37 years earlier. Clinical examination revealed a pink, fleshy, mobile, and lobulated conjunctival lesion measuring 7 mm by 10 mm, emanating from the superior-nasal bulbar quadrant. A high-resolution optical coherence tomography revealed highly cellular infiltrate and hyperreflective mass with significant posterior shadowing. Further exploration of the lesion revealed a white, stringy, cauliflower-like material on the underside of the lesion. Surgical excision and pathology subsequently confirmed a diagnosis of pyogenic granuloma with remnants of silk suture. CONCLUSIONS A diagnosis of pyogenic granuloma secondary to retained silk sutures should be considered in patients with a history of intraocular surgery irrespective of other risk factors and length of time since procedure.
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Affiliation(s)
- Mike Zein
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
| | - Despoina Theotoka
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
| | - Sarah Wall
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
| | - Anat Galor
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
- Surgical Services, Miami Veterans Affairs Medical Center, Miami, FL; and
| | - Florence Cabot
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
| | - Umangi Patel
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
- Lions Eye Bank, Miami, FL
| | - Sander Dubovy
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
- Lions Eye Bank, Miami, FL
| | - Carol L Karp
- Bascom Palmer Eye Institute, Department of Ophthalmology, University of Miami, Miami, FL
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13
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Chidharla A, Rabbani R, Agarwal K, Abdelwahed S, Bhandari R, Manaktala P, Singh A, Patel K, Singh P, Mehta D, Malik P, Patel U, Pillai S, Koritala T. 1825P Prevalence of cancer among e-cigarette smokers compared to non-smokers: A retrospective cross-sectional survey study of NHANES-CDC. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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14
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Stanga PE, Pastor-Idoate S, Reinstein U, Vatas P, Patel U, Dubovy S, Reinstein D, Zahavi O. Navigated single-capture 3D and cross-sectional wide-field OCT of the mid and peripheral retina and vitreoretinal interface. Eur J Ophthalmol 2021; 32:1642-1651. [PMID: 34218694 DOI: 10.1177/11206721211026100] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
PURPOSE Assess the mid and peripheral neuroretina and vitreoretinal interface using a novel Navigated Single-Capture 3D and Cross-Sectional Wide-Field Swept-Source Optical Coherence Tomography (WF SS-OCT) technology with correlation to Multi-Wavelength Ultra-Widefield Imaging (MW UWFI) and Histopathology reference. METHODS Retrospective observational study. A total of 74 patients (148 eyes) were imaged using WF SS-OCT and Navigated Single-Capture twelve 23 mm cross-sectional radial scan pattern at 15° intervals. Image diagnosis included: congenital hypertrophy of the retinal pigment epithelium, choroidal nevus, ora serrata pearls, retinal tuft, lattice, snail track, cobblestone degeneration, retinal hole, retinal tear, degenerative retinoschisis, peripheral laser retinopexy, white without pressure, vitreous floaters, subclinical peripheral rhegmatogenous retinal detachment (RD), and tractional RD in proliferative diabetic retinopathy. WF SS-OCT images were correlated with MW UWFI and histopathological references where available. RESULTS WF SS-OCT successfully imaged structural features in all diagnoses with significant improvement in diagnostic capability and increased the diagnosis of specific features such as vitreoretinal attachment, full thickness hole or tear and subretinal fluid. Histopathological correlation was available for five (5) different peripheral retinal pathologies imaged by both WF SS-OCT and MW UWFI and good anatomical correlation was observed in all diagnosis. CONCLUSIONS Navigated Single-Capture 3D and Cross-Sectional WF SS-OCT provides detailed anatomic information of the mid and peripheral neuroretina and vitreoretinal interface, allowing early recognition of vision-threatening features that may influence clinical management, particularly in an era of telemedicine or when there is limited or no access to Indirect Ophthalmoscopy with 360° Scleral Indentation.
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Affiliation(s)
- Paulo Eduardo Stanga
- The Retina Clinic London and London Vision Clinic, London, UK.,Institute of Ophthalmology, University College London, London, UK
| | - Salvador Pastor-Idoate
- IOBA Eye Institute, University of Valladolid, Valladolid, Spain.,Clinical University Hospital, Valladolid, Spain
| | | | - Pooja Vatas
- The Retina Clinic London and London Vision Clinic, London, UK
| | - Umangi Patel
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Sander Dubovy
- Department of Ophthalmology, Bascom Palmer Eye Institute, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Dan Reinstein
- The Retina Clinic London and London Vision Clinic, London, UK
| | - Ori Zahavi
- Canon Medical Systems Europe, Business Unit Eye Care, Zoetermeer, Zuid-Holland, The Netherlands
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15
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Watane A, Botsford BW, Sood AB, Williams AM, Xu D, Gupta RR, Conner IP, Sivalingam A, Gupta OP, Ward MS, Mehta S, Cid MD, Crossan A, Sierpina DI, Hwang FS, Rachitskaya A, Ehmann DS, Kovacs KD, Orlin A, Zhang AY, Patel U, Dubovy S, Klufas MA, Patel NA, Sridhar J, Yannuzzi NA. Scleral-Sutured Intraocular Lens Dislocations Secondary to Eyelet Fractures. Am J Ophthalmol 2021; 221:273-278. [PMID: 32777376 DOI: 10.1016/j.ajo.2020.07.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 12/11/2022]
Abstract
OBJECTIVE To report clinical features and visual outcomes following eyelet fractures of scleral-sutured enVista MX60 (Bausch + Lomb) intraocular lenses (IOL). DESIGN Retrospective, multi-center, multi-surgeon, observational case series. METHODS Study Population: Patients with scleral-sutured enVista MX60 IOLs that experienced either an intraoperative or post-operative eyelet fracture associated with dislocation or subluxation. PROCEDURES All records were reviewed for patients with a dislocated or subluxed scleral-sutured enVista MX60 IOL. Clinical features and outcomes were gathered. Main Outcome Measures: Clinical setting, surgical technique, complications, and visual acuity. RESULTS A total of 25 scleral-sutured enVista MX60 IOLs displacements secondary to eyelet fractures in 23 eyes of 23 patients were included. There were 20 IOLs that sustained a postoperative fracture and 5 IOLs that sustained an intraoperative fracture. Of the postoperative fractures, 7 were dislocated and 13 were subluxed. Gore-Tex was the suture of choice for 19 of the postoperative fractures and all 5 of the intraoperative fractures, and Prolene was used for 1 postoperative fracture. The mean time until postoperative fracture was 96 ± 125 days, and the median time was 61 (IQR 48-144) days. Of the postoperative fractures, new MX60s were sutured in 10 patients, and 2 of them experienced repeat displacements due to a new eyelet fracture. In the intraoperative fracture group, new MX60s were sutured in 4 patients and an Akreos AO60 lens was placed in the 5th patient. The mean preoperative best-corrected logMAR visual acuity for all patients improved from 1.2 ± 0.8 (20/317 Snellen equivalent) to 0.5 ± 0.5 (20/63 Snellen equivalent) at most recent follow-up after lens replacement. CONCLUSIONS Scleral-sutured MX60 intraocular lenses can experience intraoperative or postoperative eyelet fractures, resulting in lens subluxation or dislocation. Surgeons should be aware of this complication when evaluating secondary intraocular lens options.
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Patel U, Blackmore M, Stein D, Carleton K, Chung H. Costs and Utilization for Low Income Minority Patients with Depression in a Collaborative Care Model Implemented in a Community‐Based Academic Health System. Health Serv Res 2020. [DOI: 10.1111/1475-6773.13482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Affiliation(s)
- U. Patel
- Albert Einstein College of Medicine Bronx NY United States
| | - M. Blackmore
- Montefiore Medical Center Bronx NY United States
| | - D. Stein
- Montefiore Medical Center Bronx NY United States
| | - K. Carleton
- Montefiore Medical Center Bronx NY United States
| | - H. Chung
- Montefiore Medical Center Bronx NY United States
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Evans R, Taylor S, Kalasthry J, Sakai N, Miles A, Aboagye A, Agoramoorthy L, Ahmed S, Amadi A, Anand G, Atkin G, Austria A, Ball S, Bazari F, Beable R, Beare S, Beedham H, Beeston T, Bharwani N, Bhatnagar G, Bhowmik A, Blakeway L, Blunt D, Boavida P, Boisfer D, Breen D, Bridgewater J, Burke S, Butawan R, Campbell Y, Chang E, Chao D, Chukundah S, Clarke C, Collins B, Collins C, Conteh V, Couture J, Crosbie J, Curtis H, Daniel A, Davis L, Desai K, Duggan M, Ellis S, Elton C, Engledow A, Everitt C, Ferdous S, Frow A, Furneaux M, Gibbons N, Glynne-Jones R, Gogbashian A, Goh V, Gourtsoyianni S, Green A, Green L, Green L, Groves A, Guthrie A, Hadley E, Halligan S, Hameeduddin A, Hanid G, Hans S, Hans B, Higginson A, Honeyfield L, Hughes H, Hughes J, Hurl L, Isaac E, Jackson M, Jalloh A, Janes S, Jannapureddy R, Jayme A, Johnson A, Johnson E, Julka P, Kalasthry J, Karapanagiotou E, Karp S, Kay C, Kellaway J, Khan S, Koh D, Light T, Limbu P, Lock S, Locke I, Loke T, Lowe A, Lucas N, Maheswaran S, Mallett S, Marwood E, McGowan J, Mckirdy F, Mills-Baldock T, Moon T, Morgan V, Morris S, Morton A, Nasseri S, Navani N, Nichols P, Norman C, Ntala E, Nunes A, Obichere A, O'Donohue J, Olaleye I, Oliver A, Onajobi A, O'Shaughnessy T, Padhani A, Pardoe H, Partridge W, Patel U, Perry K, Piga W, Prezzi D, Prior K, Punwani S, Pyers J, Rafiee H, Rahman F, Rajanpandian I, Ramesh S, Raouf S, Reczko K, Reinhardt A, Robinson D, Rockall A, Russell P, Sargus K, Scurr E, Shahabuddin K, Sharp A, Shepherd B, Shiu K, Sidhu H, Simcock I, Simeon C, Smith A, Smith D, Snell D, Spence J, Srirajaskanthan R, Stachini V, Stegner S, Stirling J, Strickland N, Tarver K, Teague J, Thaha M, Train M, Tulmuntaha S, Tunariu N, van Ree K, Verjee A, Wanstall C, Weir S, Wijeyekoon S, Wilson J, Wilson S, Win T, Woodrow L, Yu D. Patient deprivation and perceived scan burden negatively impact the quality of whole-body MRI. Clin Radiol 2020; 75:308-315. [PMID: 31836179 DOI: 10.1016/j.crad.2019.10.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 10/30/2019] [Indexed: 01/26/2023]
Abstract
AIM To evaluate the association between the image quality of cancer staging whole-body magnetic resonance imaging (WB-MRI) and patient demographics, distress, and perceived scan burden. MATERIALS AND METHODS A sample of patients recruited prospectively to multicentre trials comparing WB-MRI with standard scans for staging lung and colorectal cancer were invited to complete two questionnaires. The baseline questionnaire, administered at recruitment, collated data on demographics, distress and co-morbidity. The follow-up questionnaire, completed after staging investigations, measured perceived WB-MRI scan burden (scored 1 low to 7 high). WB-MRI anatomical coverage, and technical quality was graded by a radiographic technician and grading combined to categorise the scan as "optimal", "sub-optimal" or "degraded". A radiologist categorised 30 scans to test interobserver agreement. Data were analysed using the chi-square, Fisher's exact, t-tests, and multinomial regression. RESULTS One hundred and fourteen patients were included in the study (53 lung, 61 colorectal; average age 65.3 years, SD=11.8; 66 men [57.9%]). Overall, 45.6% (n=52), scans were classified as "optimal" quality, 39.5% (n=45) "sub-optimal", and 14.9% (n=17) as "degraded". In adjusted analyses, greater deprivation level and higher patient-reported scan burden were both associated with a higher likelihood of having a sub-optimal versus an optimal scan (odds ratio [OR]: 4.465, 95% confidence interval [CI]: 1.454 to 13.709, p=0.009; OR: 1.987, CI: 1.153 to 3.425, p=0.013, respectively). None of the variables predicted the likelihood of having a degraded scan. CONCLUSIONS Deprivation and patients' perceived experience of the WB-MRI are related to image quality. Tailored protocols and individualised patient management before and during WB-MRI may improve image quality.
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Patel U, Sankhla C. Application of Indian Smell Identification Test (INSIT)as screening test to study unawareness of Hyposmia and effect of cognition on it inpatient of idiopathic Parkinson’s disease. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Kowalski EH, Kneiber D, Valdebran M, Patel U, Amber KT. Distinguishing truly recalcitrant prurigo nodularis from poor treatment adherence: a response to treatment-resistant prurigo nodularis [Response to letter]. Clin Cosmet Investig Dermatol 2019; 12:371-372. [PMID: 31190945 PMCID: PMC6536118 DOI: 10.2147/ccid.s214195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 05/02/2019] [Indexed: 11/23/2022]
Affiliation(s)
- Eric H Kowalski
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA
| | - Diana Kneiber
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA
| | - Manuel Valdebran
- Department of Dermatology, University of California-Irvine, Irvine, CA, USA
| | - Umangi Patel
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA
| | - Kyle T Amber
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA
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Abstract
Prurigo nodualris (PN) is a chronic condition with highly pruritic, hyperkeratotic papules or nodules arising in the setting of chronic pruritus. While PN may serve as a phenotypic presentation of several underlying conditions such as atopic dermatitis, chronic kidney disease-related pruritus, and neurological diseases, it represents a distinct clinical entity that may persist despite the removal of the underlying cause, if one is identified. Neuronal proliferation, eosinophils, mast cells, and small-fiber neuropathy play a role in the production of pruritus in PN, although the exact mechanism has not yet been established. Identifying an underlying cause, if present, is essential to prevent recurrence of PN. Due to often present comorbidities, treatment is typically multimodal with utilization of topical and systemic therapies. We performed a PubMed/MEDLINE search for PN and present a review of recent developments in the treatment of PN. Treatment typically relies on the use of topical or intralesional steroids, though more severe or recalcitrant cases often necessitate the use of phototherapy or systemic immunosuppressives. Thalidomide and lenalidomide can both be used in severe cases; however, their toxicity profile makes them less favorable. Opioid receptor antagonists and neurokinin-1 receptor antagonists represent two novel families of therapeutic agents which may effectively treat PN with a lower toxicity profile than thalidomide or lenalidomide.
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Affiliation(s)
- Eric H Kowalski
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA,
| | - Diana Kneiber
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA,
| | - Manuel Valdebran
- Department of Dermatology, University of California, Irvine, Irvine, CA, USA
| | - Umangi Patel
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA,
| | - Kyle T Amber
- Department of Dermatology, University of Illinois at Chicago, Chicago, IL, USA,
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John A, Patel U, Rusted J, Richards M, Gaysina D. Affective problems and decline in cognitive state in older adults: a systematic review and meta-analysis. Psychol Med 2019; 49:353-365. [PMID: 29792244 PMCID: PMC6331688 DOI: 10.1017/s0033291718001137] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Revised: 04/05/2018] [Accepted: 04/11/2018] [Indexed: 12/23/2022]
Abstract
Evidence suggests that affective problems, such as depression and anxiety, increase risk for late-life dementia. However, the extent to which affective problems influence cognitive decline, even many years prior to clinical diagnosis of dementia, is not clear. The present study systematically reviews and synthesises the evidence for the association between affective problems and decline in cognitive state (i.e., decline in non-specific cognitive function) in older adults. An electronic search of PubMed, PsycInfo, Cochrane, and ScienceDirect was conducted to identify studies of the association between depression and anxiety separately and decline in cognitive state. Key inclusion criteria were prospective, longitudinal designs with a minimum follow-up period of 1 year. Data extraction and methodological quality assessment using the STROBE checklist were conducted independently by two raters. A total of 34 studies (n = 71 244) met eligibility criteria, with 32 studies measuring depression (n = 68 793), and five measuring anxiety (n = 4698). A multi-level meta-analysis revealed that depression assessed as a binary predictor (OR 1.36, 95% CI 1.05-1.76, p = 0.02) or a continuous predictor (B = -0.008, 95% CI -0.015 to -0.002, p = 0.012; OR 0.992, 95% CI 0.985-0.998) was significantly associated with decline in cognitive state. The number of anxiety studies was insufficient for meta-analysis, and they are described in a narrative review. Results of the present study improve current understanding of the temporal nature of the association between affective problems and decline in cognitive state. They also suggest that cognitive function may need to be monitored closely in individuals with affective disorders, as these individuals may be at particular risk of greater cognitive decline.
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Affiliation(s)
- A. John
- EDGE Lab, School of Psychology, University of Sussex, Brighton, UK
| | - U. Patel
- EDGE Lab, School of Psychology, University of Sussex, Brighton, UK
| | - J. Rusted
- School of Psychology, University of Sussex, Brighton, UK
| | - M. Richards
- MRC Unit for Lifelong Health and Ageing at UCL, London, UK
| | - D. Gaysina
- EDGE Lab, School of Psychology, University of Sussex, Brighton, UK
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Branstetter H, Patel U, Kedia P, Tarnasky PR. Self-expandable covered metallic stent as a conduit for pancreatic stone extraction. Endoscopy 2018; 50:E262-E263. [PMID: 29969798 DOI: 10.1055/a-0640-2421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Affiliation(s)
- Heather Branstetter
- Gastroenterology, Methodist Dallas Medical Center, Dallas, Texas, United States
| | - Umangi Patel
- Gastroenterology, Methodist Dallas Medical Center, Dallas, Texas, United States
| | - Prashant Kedia
- Gastroenterology, Methodist Dallas Medical Center, Dallas, Texas, United States
| | - Paul R Tarnasky
- Gastroenterology, Methodist Dallas Medical Center, Dallas, Texas, United States
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Affiliation(s)
- Rathan Reddy
- Methodist Dallas Medical Center, Dallas, Texas, USA
| | - Umangi Patel
- Methodist Dallas Medical Center, Dallas, Texas, USA
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Patel U, Mejia A, Torres W, Kedia P, Tarnasky P. Recurrent cholangitis due to intraductal papillary mucinous neoplasm of a cystic duct remnant. VideoGIE 2018; 3:7-8. [PMID: 29905187 PMCID: PMC5965711 DOI: 10.1016/j.vgie.2017.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Umangi Patel
- Methodist Dallas Medical Center, Dallas, Texas, USA
- East Texas Gastroenterology, Longview, Tex
- Methodist Dallas Medical Center, Dallas, Texas, USA
| | - Alejandro Mejia
- Methodist Dallas Medical Center, Dallas, Texas, USA
- East Texas Gastroenterology, Longview, Tex
- Methodist Dallas Medical Center, Dallas, Texas, USA
| | - William Torres
- East Texas Gastroenterology, Longview, Tex
- Methodist Dallas Medical Center, Dallas, Texas, USA
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Patel U, Moss R, Hossain K, Kennedy A, Barney E, Ahmed I, Hannon A. Structural and physico-chemical analysis of calcium/strontium substituted, near-invert phosphate based glasses for biomedical applications. Acta Biomater 2017; 60:109-127. [PMID: 28684335 DOI: 10.1016/j.actbio.2017.07.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/27/2017] [Accepted: 07/02/2017] [Indexed: 11/26/2022]
Abstract
Neutron diffraction, 23Na and 31P NMR, and FTIR spectroscopy have been used to investigate the structural effects of substituting CaO with SrO in a 40P2O5·(16-x)CaO·20Na2O·24MgO·xSrO glass, where x is 0, 4, 8, 12 and 16mol%. The 31P solid-state NMR results showed similar amounts of Q1 and Q2 units for all of the multicomponent glasses investigated, showing that the substitution of Sr for Ca has no effect on the phosphate network. The M-O coordinations (M=Mg, Ca, Sr, Na) were determined for binary alkali and alkaline earth metaphosphates using neutron diffraction and broad asymmetric distributions of bond length were observed, with coordination numbers that were smaller and bond lengths that were shorter than in corresponding crystals. The Mg-O coordination number was determined most reliably as 5.0(2). The neutron diffraction results for the multicomponent glasses are consistent with a structural model in which the coordination of Ca, Sr and Na is the same as in the binary metaphosphate glass, whereas there is a definite shift of Mg-O bonds to longer distance. There is also a small but consistent increase in the Mg-O coordination number and the width of the distribution of Mg-O bond lengths, as Sr substitutes for Ca. Functional properties, including glass transition temperatures, thermal processing windows, dissolution rates and ion release profiles were also investigated. Dissolution studies showed a decrease in dissolution rate with initial addition of 4mol% SrO, but further addition of SrO showed little change. The ion release profiles followed a similar trend to the observed dissolution rates. The limited changes in structure and dissolution rates observed for substitution of Ca with Sr in these fixed 40mol% P2O5 glasses were attributed to their similarities in terms of ionic size and charge. STATEMENT OF SIGNIFICANCE Phosphate based glasses are extremely well suited for the delivery of therapeutic ions in biomedical applications, and in particular strontium plays an important role in the treatment of osteoporosis. We show firstly that the substitution of strontium for calcium in bioactive phosphate glasses can be used to control the dissolution rate of the glass, and hence the rate at which therapeutic ions are delivered. We then go on to examine in detail the influence of Sr/Ca substitution on the atomic sites in the glass, using advanced structural probes, especially neutron diffraction. The environments of most cations in the glass are unaffected by the substitution, with the exception of Mg, which becomes more disordered.
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Enejoh A, Niyang M, Olutola A, Patel U, Pharr J, Echezona E. Strategies for improving pediatric/adolescent HIV suppression rates for
patients on HAART in Nigeria. Ann Glob Health 2016. [DOI: 10.1016/j.aogh.2016.04.410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Stellingwerf ME, Maeda Y, Patel U, Vaizey CJ, Warusavitarne J, Bemelman WA, Clark SK. The role of the defaecating pouchogram in the assessment of evacuation difficulty after restorative proctocolectomy and pouch-anal anastomosis. Colorectal Dis 2016; 18:O292-300. [PMID: 27338231 DOI: 10.1111/codi.13431] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Accepted: 01/28/2016] [Indexed: 02/08/2023]
Abstract
AIM Restorative proctocolectomy (RPC) with ileal pouch-anal anastomosis (IPAA) is the most frequently performed operation for intractable ulcerative colitis (UC) and for many patients with familial adenomatous polyposis (FAP). It can be complicated by a functional evacuation difficulty, which is not well understood. We aimed to evaluate the role of defaecating pouchography in an attempt to assess the mechanism of evacuation difficulty in pouch patients. METHOD All RPC patients who had had a defaecating pouchogram for evacuation difficulty at one hospital between 2006 and 2014 were retrospectively reviewed. The findings and features were correlated with the symptoms. Demographic, clinical and radiological variables were analysed. RESULTS Eighty-seven [55 (63%) female] patients aged 47.6 ± 12.5 years (mean standard ± SD) were identified. Thirty-five had a mechanical outlet obstruction and 52 had no identified mechanical cause to explain the evacuation difficulty. The mean age of these 52 [33 (63%) female] patients was 48.2 ± 13 years. Of these 52 patients, significantly more used anti-diarrhoeal medication (P = 0.029), complained of a high frequency of defaecation (P = 0.005), experienced a longer time to the initiation of defaecation (P = 0.049) and underwent pouchoscopy (P = 0.003). Biofeedback appeared to improve the symptoms in 7 of 16 patients with a nonmechanical defaecatory difficulty. The most common findings on defaecating pouchography included residual barium of more than 33% after an attempted evacuation (46%, n = 24), slow evacuation (35%, n = 18) and mucosal irregularity (33%, n = 17). Correlation between radiological features and symptoms showed a statistically significant relationship between straining, anal pain, incontinence and urgency with patterns of anismus or pelvic floor descent or weakness seen on the defaecating pouchogram. Symptoms of incomplete evacuation, difficulty in the initiation of defaecation, high defaecatory frequency and abdominal pain were not correlated with the radiological features of the pouchogram. CONCLUSION Defaecating pouchography may be useful for identifying anismus and pelvic floor disorders in pouch patients who have symptoms of straining, anal pain or incontinence. In patients with a high frequency of defaecation and abdominal pain it does not provide clinically meaningful information. Patients who complain of straining, incontinence, anal pain or urgency and have anismus or pelvic floor disorders may benefit from behavioural therapy.
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Affiliation(s)
- M E Stellingwerf
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Harrow, UK.,Department of Surgery, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - Y Maeda
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Harrow, UK.,Department of Surgery, St Mark's Hospital, Harrow, UK
| | - U Patel
- Department of Radiology, St Mark's Hospital, Harrow, UK
| | - C J Vaizey
- Sir Alan Parks Physiology Unit, St Mark's Hospital, Harrow, UK.,Department of Surgery, St Mark's Hospital, Harrow, UK
| | | | - W A Bemelman
- Department of Surgery, Academic Medical Centre, University of Amsterdam, Amsterdam, The Netherlands
| | - S K Clark
- Department of Surgery, St Mark's Hospital, Harrow, UK
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Smith A, Patel U. Neurovascular salvage techniques by vascular bypass – new technical developments and potential application in H&N microvascular reconstructive surgery. Br J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.bjoms.2015.08.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Myat MM, Rashmi RN, Manna D, Xu N, Patel U, Galiano M, Zielinski K, Lam A, Welte MA. Drosophila KASH-domain protein Klarsicht regulates microtubule stability and integrin receptor localization during collective cell migration. Dev Biol 2015; 407:103-14. [PMID: 26247519 PMCID: PMC4785808 DOI: 10.1016/j.ydbio.2015.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 07/29/2015] [Accepted: 08/01/2015] [Indexed: 12/28/2022]
Abstract
During collective migration of the Drosophila embryonic salivary gland, cells rearrange to form a tube of a distinct shape and size. Here, we report a novel role for the Drosophila Klarsicht-Anc-Syne Homology (KASH) domain protein Klarsicht (Klar) in the regulation of microtubule (MT) stability and integrin receptor localization during salivary gland migration. In wild-type salivary glands, MTs became progressively stabilized as gland migration progressed. In embryos specifically lacking the KASH domain containing isoforms of Klar, salivary gland cells failed to rearrange and migrate, and these defects were accompanied by decreased MT stability and altered integrin receptor localization. In muscles and photoreceptors, KASH isoforms of Klar work together with Klaroid (Koi), a SUN domain protein, to position nuclei; however, loss of Koi had no effect on salivary gland migration, suggesting that Klar controls gland migration through novel interactors. The disrupted cell rearrangement and integrin localization observed in klar mutants could be mimicked by overexpressing Spastin (Spas), a MT severing protein, in otherwise wild-type salivary glands. In turn, promoting MT stability by reducing spas gene dosage in klar mutant embryos rescued the integrin localization, cell rearrangement and gland migration defects. Klar genetically interacts with the Rho1 small GTPase in salivary gland migration and is required for the subcellular localization of Rho1. We also show that Klar binds tubulin directly in vitro. Our studies provide the first evidence that a KASH-domain protein regulates the MT cytoskeleton and integrin localization during collective cell migration.
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Affiliation(s)
- M M Myat
- Department of Biology, Medgar Evers College - CUNY, 1638 Bedford Avenue, Brooklyn, NY 11225, USA.
| | - R N Rashmi
- Department of Biology, Medgar Evers College - CUNY, 1638 Bedford Avenue, Brooklyn, NY 11225, USA
| | - D Manna
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
| | - N Xu
- Department of Natural Sciences, LaGuardia Community College - CUNY, Long Island City, NY 11101, USA
| | - U Patel
- Department of Biology, Medgar Evers College - CUNY, 1638 Bedford Avenue, Brooklyn, NY 11225, USA
| | - M Galiano
- Department of Biology, Medgar Evers College - CUNY, 1638 Bedford Avenue, Brooklyn, NY 11225, USA
| | - K Zielinski
- Department of Biology, Medgar Evers College - CUNY, 1638 Bedford Avenue, Brooklyn, NY 11225, USA
| | - A Lam
- Department of Biology, Medgar Evers College - CUNY, 1638 Bedford Avenue, Brooklyn, NY 11225, USA
| | - M A Welte
- Department of Biology, University of Rochester, Rochester, NY 14627, USA
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Smith A, Patel U. Lessons Learned from Neurovascular Bypass Salvage procedures – New Technology & applications in Head & Neck Free Flap surgery. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.1000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Sokhi HK, Mok WY, Patel U. Stage T3a renal cell carcinoma: staging accuracy of CT for sinus fat, perinephric fat or renal vein invasion. Br J Radiol 2015; 88:20140504. [PMID: 25410425 DOI: 10.1259/bjr.20140504] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE To study the accuracy of CT for staging T3a (TNM 2009) renal cell carcinoma (RCC). METHODS Unenhanced and nephrographic phase CT studies of 117 patients (male:female = 82:35; age range, 21-86 years) with T1-T3a RCC were independently reviewed by 2 readers. The presence of sinus or perinephric fat, or renal vein invasion and tumour characteristics were noted. RESULTS Median (range) tumour size was 5.5 (0.9-19.0) cm; and 46 (39%), 16 (14%) and 55 (47%) tumours were pT1, pT2 and pT3a RCC, respectively. The sensitivity/specificity for sinus fat, perinephric fat and renal vein invasion were 71/79%, 83/76% and 59/93% (Reader 1) and 88/71%, 68/72% and 69/91% (Reader 2) with κ = 0.41, 0.43 and 0.61, respectively. Sinus fat invasion was seen in 47/55 (85%) cases with T3a RCC vs 16/55 (29%) and 33/55 (60%) for perinephric fat and renal vein invasion. Tumour necrosis, irregularity of tumour edge and direct tumour contact with perirenal fascia or sinus fat increased the odds of local invasion [odds ratio (OR), 2.5-3.7; p < 0.05; κ = 0.42-0.61]. Stage T3a tumours were centrally located (OR, 3.9; p = 0.0009). CONCLUSION Stage T3a RCC was identified with a sensitivity of 59-88% and specificity of 71-93% (κ = 0.41-0.61). Sinus fat invasion was the most common invasive feature. ADVANCES IN KNOWLEDGE Centrally situated renal tumours with an irregular tumour edge, inseparable from sinus structures or the perirenal fascia and CT features of tumour necrosis should alert the reader to the possibility of Stage T3a RCC (OR, 2.5-3.9).
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Affiliation(s)
- H K Sokhi
- Department of Radiology, St George's Hospital and Medical School, London, UK
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Patel U, Ihesiaba CC, Oduenyi F, Hunt A, Patel D, Pharr J, Obiefune M, Chukwumerije N, Ezeanolue E. Ebola outbreak in Nigeria: Volunteer health advisors as information
disseminators. Ann Glob Health 2015. [DOI: 10.1016/j.aogh.2015.02.531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Patel U, Sobowale K, Fan J, Liu NN, Kuwabara S, Lei Z, Sherer R, Voorhees BV. Cultural considerations for adaptation of an internet-based intervention
for depression prevention in Mainland China. Ann Glob Health 2015. [DOI: 10.1016/j.aogh.2015.02.985] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Kumar S, Ameli-Renani S, Hakim A, Jeon JH, Shrivastava S, Patel U. Ureteral obstruction following renal transplantation: causes, diagnosis and management. Br J Radiol 2014; 87:20140169. [PMID: 25284426 DOI: 10.1259/bjr.20140169] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Renal transplantation, first performed successfully in the 1950s, is the treatment of choice for most patients with end-stage renal failure. It confers longer term survival and a better quality of life than do both haemodialysis and peritoneal dialysis. The success of renal transplantation is dependent on the preservation of renal graft function and despite the many advances in surgical techniques, immunosuppressive regimens and supportive therapies, many challenges remain including post-operative ureteral obstruction. This complication can pose a risk to graft, and, occasionally, to patient survival. In this pictorial review, we describe the causes of ureteral obstruction following renal transplantation and illustrate the pivotal role of radiology in both diagnosing and managing these complications.
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Affiliation(s)
- S Kumar
- 1 Medical School, St George's, University of London, London, UK
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Van Londen M, Humalda JK, Aarts BM, Sanders JS, Bakker SJL, Navis GJ, De Borst MH, Pazik J, O Dak M, Lewandowski Z, Podgorska M, Sadowska A, Sitarek E, Malejczyk J, Durlik M, Drechsler C, Philstrom H, Meinitzer A, Pilz S, Tomaschitz A, Abedini S, Fellstrom B, Jardine A, Wanner C, Maerz W, Holdaas H, Halleck F, Staeck O, Neumayer HH, Budde K, Khadzhynov D, Rostaing L, Allal A, Congy N, Aarninck A, Del Bello A, Maggioni S, Debiols B, Sallusto F, Kamar N, Stolyarevich E, Artyukhina L, Kim I, Tomilina N, Zaidenov V, Kurenkova L, Keyzer CA, De Borst MH, Van Den Berg E, Jahnen-Dechent W, Navis G, Bakker SJL, Van Goor H, Pasch A, Aulagnon F, Avettand-Fenoel V, Scemla A, Lanternier F, Lortholary O, Anglicheau D, Legendre C, Zuber J, Furic-Cunko V, Basic-Jukic N, Coric M, Kastelan Z, Hudolin T, Kes P, Mikolasevic I, Racki S, Lukenda V, Orlic L, Dobrowolski LC, Verberne HJ, Ten Berge IJM, Bemelman FJ, Krediet CTP, Ferreira AC, Silva C, Remedio F, Pena A, Nolasco F, Heldal K, Lonning K, Leivestad T, Reisaeter AV, Hartmann A, Foss AE, Midtvedt K, Vlachopanos G, Kassimatis T, Zerva A, Kokkona A, Stavroulaki E, Agrafiotis A, Sanchez Sobrino B, Lafuente Covarrubias O, Karsten Alvarez S, Zalamea Jarrin F, Rubio Gonzalez E, Huerta Arroyo A, Portoles Perez J, Basic-Jukic N, Kes P, Baek CH, Kim M, Kim JS, Yang WS, Han DJ, Park SK, Zulkarnaev A, Vatazin A, Cabiddu G, Maxia S, Castellino S, Loi V, Guzzo G, Piccoli GB, Pani A, Bucsa C, Tacu D, Harza M, Sinescu I, Mircescu G, Stefan G, Alfieri CM, Laura F, Danilovic B, Cresseri D, Meneghini M, Riccardo F, Regalia A, Messa P, Panuccio V, Tripepi R, Parlongo G, Quattrone S, Leonardis D, Tripepi G, Zoccali C, Mallamaci F, Amer H, Geerdes PA, Fettes TT, Prieto M, Walker RC, Edwards BS, Cosio FG, Khrabrova M, Nabokov A, Groene HJ, Weithofer P, Kliem V, Smirnov A, Dobronravov V, Sezer S, Gurlek Demirci B, Tutal E, Guliyev O, Say N CB, Ozdemir Acar FN, Haberal M, Albugami MM, Hussein M, Alsaeed S, Almubarak A, Bel'eed-Akkari K, Go biewska JE, Tarasewicz A, D bska- lizie A, Rutkowski B, Albugami MM, Hussein M, Almubarak A, Alsaeed S, Bel'eed-Akkari K, Ailioaie O, Arzouk N, Tourret J, Mercadal L, Szumilak D, Ourahma S, Parra J, Billault C, Barrou B, Alfieri CM, Floreani R, Ulivieri FM, Meneghini M, Regalia A, Zanoni F, Croci D, Rastaldi MP, Messa PG, Keyzer CA, Riphagen IJ, Joosten MM, Navis G, Muller Kobold AC, Kema IP, Bakker SJL, De Borst MH, Santos Lascasas J, Malheiro J, Fonseca I, Martins L, Almeida M, Pedroso S, Dias L, Henriques A, Cabrita A, Vincenti F, Weir M, Von Visger J, Kopyt N, Mannon R, Deng H, Yue S, Wolf M, Halleck F, Khadzhynov, D, Schmidt D, Petereit F, Slowinski T, Neumayer HH, Budde K, Staeck O, Hernandez Vargas H, Artamendi Larranaga M, Gil Catalinas F, Ramalle Gomara E, Bello Ovalle A, Pimentel Guzman G, Coloma Lopez A, Dall Anesse C, Gil Paraiso A, Beired Val I, Sierra Carpio M, Huarte Loza E, Slubowska K, Szmidt J, Chmura A, Durlik M, Staeck O, Khadzhynov D, Schmidt D, Niemann M, Petereit F, Lachmann N, Neumayer HH, Budde K, Halleck F, Alotaibi T, Nampoory N, Gheith O, Halim M, Aboatteya H, Mansour H, Abdulkawey H, Said T, Nair P, WazNa-Jab O Ska E, Durlik M, Elias M, Caillard S, Morelon E, Rivalan J, Moal V, Frimat L, Mourad G, Rerolle JP, Legendre C, Mousson C, Delahousse M, Pouteil-Noble C, Dantal J, Cassuto E, Subra JF, Lang P, Thervet E, Roosweil D, Molnar MZ, Fornadi K, Ronai KZ, Novak M, Mucsi I, Scale TM, Robertson S, Kumwenda M, Jibani M, Griffin S, Williams AJ, Mikhail A, Jeong JC, Koo TY, Jeon HJ, Han M, Oh KH, Ahn C, Yang J, Bancu I, Canas L, Juega J, Malumbres S, Guermah I, Bonet J, Lauzurica R, Basso E, Messina M, Daidola G, Mella A, Lavacca A, Manzione AM, Rossetti M, Ranghino A, Ariaudo C, Segoloni GP, Biancone L, Whang E, Son SH, Kwon H, Kong JJ, Choi WY, Yoon CS, Ferreira AC, Silva C, Aires I, Ferreira A, Remedio F, Nolasco F, Ratkovic M, Basic Jukic N, Gledovic B, Radunovic D, Prelevic V, Stefan G, Garneata L, Bucsa C, Harza M, Sinescu I, Mircescu G, Tacu D, Aniort J, Kaysi S, Mulliez A, Heng AE, Su owicz J, Wojas-Pelc A, Ignacak E, Janda K, Krzanowski M, Miarka P, Su owicz W, Filipov JJ, Zlatkov BK, Dimitrov EP, Svinarov DA, Champion L, Renoux C, Randoux C, Du Halgouet C, Azeroual L, Glotz D, Vrtovsnik F, Daugas E, Musetti C, Battista M, Cena T, Izzo C, Airoldi A, Magnani C, Stratta P, Fiskvik I, Holte H, Bentdal O, Holdaas H, Erkmen Uyar M, Sezer S, Bal Z, Guliyev O, Colak T, Gurlek Demirci B, Ozdemir Acar N, Haberal M, Kara E, Ahbap E, Basturk T, Koc Y, Sakaci T, Sahutoglu T, Akgol C, Sevinc M, Unsal A, Seyahi N, Abdultawab K, Alotaibi T, Gheith O, Mansour H, Halim M, Nair P, Said T, Balaha M, Elsayed A, Awadeen W, Nampoory N, Hwang JC, Jiang MY, Lu YH, Weng SF, Madziarska K, Zmonarski SC, Augustyniak-Bartosik H, Magott-Procelewska M, Krajewska M, Mazanowska O, Banasik M, Penar J, Weyde W, Boraty Ska M, Klinger M, Swarnalatha G, Narendranath L, Shanta Rao G, Sawhney A, Subrahmanyam L, Kumar S, Jeon H, Hakim A, Patel U, Shrivastava S, Banerjee D, Kimura T, Yagisawa T, Nanmoku K, Kurosawa A, Sakuma Y, Miki A, Nukui A, Lee CH, Oh IH, Park JS, Watarai Y, Narumi S, Goto N, Hiramitsu T, Tsujita M, Yamamoto T, Kobayashi T, Muniz Pacios L, Molina M, Cabrera J, Gonzalez E, Garcia Santiago A, Aunon P, Santana S, Polanco N, Gutierrez E, Jimenez C, Andres A, Mohammed M, Hammam M, Housawi A, Goldsmith DJ, Cronin A, Frame S, Smalcelj R, Canoz MB, Yavuz DD, Altunoglu A, Yavuz R, Colak T, Haberal M, Tong A, Hanson CS, Chapman JR, Halleck F, Budde K, Papachristou C, Craig J, Zheng XY, Han S, Wang LM, Zhu YH, Zeng L, Zhou MS, Guliyev O, Erkmen Uyar M, Sezer S, Bal Z, Colak T, Gurlek Demirci B, Ozdemir Acar N, Haberal M, Ranghino A, Diena D, De Rosa FG, Faletti R, Barbui AM, Guarnaccia C, Corcione S, Messina M, Ariaudo C, Segoloni GP, Biancone L, Patel R, Murray PD, Moiseev A, Kalachik A, Harden PN, Norby G, Mjoen G, Holdaas H, Gilboe IM, Shi Y, Luo L, Cai B, Wang T, Tao Y, Wang L, Erkmen Uyar M, Sezer S, Bal Z, Guliyev O, Tutal E, Gurlek Demirci B, Ozdemir Acar N, Haberal M, Di Vico MC, Messina M, Mezza E, Giraudi R, Nappo A, Boaglio E, Ranghino A, Fop F, Segoloni GP, Biancone L, Carta P, Dattolo E, Buti E, Zanazzi M, Villari D, Di Maria L, Santoro G, Li Marzi V, Minetti EE, Nicita G, Carta P, Zanazzi M, Buti E, Antognoli G, Dervishi E, Vignali L, Caroti L, Di Maria L, Minetti EE, Dorje C, Kovacevic G, Hammarstrom C, Strom EH, Holdaas H, Midtvedt K, Reisaeter AV, Alfieri CM, Floreani R, Meneghini M, Regalia A, Zanoni F, Vettoretti S, Croci MD, Rastaldi MP, Messa P, Heldal K, Lonning K, Reisaeter AV, Bernklev T, Midtvedt K, Strakosha A, Pasko N, Nasto F, Cadri V, Dedei A, Thereska N. TRANSPLANTATION CLINICAL 2. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu180] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gedam DS, Verma M, Patel U, Gedam S. Effect of Distraction Technique During Immunization to Reduce Behaviour Response Score (FLACC) to Pain in Toddlers. J Nepal Paedtr Soc 2013. [DOI: 10.3126/jnps.v33i1.7017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction: Distraction techniques are important non pharmacological tools to reduce pain in infants and children. Few data are available regarding their effectiveness in toddlers. We have assessed effectiveness of audio-visual distraction techniques in toddlers during and after vaccination. Materials and Methods: The study used a quasi experimental three group pretest post test design. For all the three groups, the injections were administered by same staff nurse. Group- 1 (120 Patient) was encouraged to see and play with light and sound producing toy. Group- 2 (120 Patient) children were encouraged to see cartoon movie and children of control group- 3 (110 patient) were immunized without any distraction technique. A question form was used to determine the infant’s characteristics and the Face, Leg, Activity, Cry, Consolability (FLACC) Pain Scale was used to assess the level of pain. Data was collected between 1st April 2012 and 30th September 2012. Results: The mean pain score of test group during procedure (Group-1: 2.30 & Group-2: 3.65) were lower than the score of control group (Group-3: 5.30). Similarly after procedure Score (Group-1: 4.62 & Group-2: 2.79) were lower than the score of control group (Group-3: 6.20). Conclusion: The lower pain score in response to vaccination in test group indicates that distraction technique i.e. light & sound producing toys and cartoon movies are practical way to reduce pain during routine medical interventions in toddler. DOI: http://dx.doi.org/10.3126/jnps.v33i1.7017 J Nepal Paediatr Soc. 2013;33(1):25-30
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Abstract
BACKGROUND AND PURPOSE Patients with symptoms of semicircular canal dehiscence often undergo both CT and MR imaging. We assessed whether FIESTA can replace temporal bone CT in evaluating patients for SC dehiscence. MATERIALS AND METHODS We retrospectively reviewed 112 consecutive patients (224 ears) with vestibulocochlear symptoms who underwent concurrent MR imaging and CT of the temporal bones between 2007 and 2009. MR imaging protocol included a FIESTA sequence covering the temporal bone (axial 0.8-mm section thickness, 0.4-mm spacing, coronal/oblique reformations; 41 patients at 1.5T, 71 patients at 3T). CT was performed on a 64-row multidetector row scanner (0.625-mm axial acquisition, with coronal/oblique reformations). Both ears of each patient were evaluated for dehiscence of the superior and posterior semicircular canals in consensual fashion by 2 neuroradiologists. Analysis of the FIESTA sequence and reformations was performed first for the MR imaging evaluation. CT evaluation was performed at least 2 weeks after the MR imaging review, resulting in a blinded comparison of CT with MR imaging. CT was used as the reference standard to evaluate the MR imaging results. RESULTS For SSC dehiscence, MR imaging sensitivity was 100%, specificity was 96.5%, positive predictive value was 61.1%, and negative predictive value was 100% in comparison with CT. For PSC dehiscence, MR imaging sensitivity was 100%, specificity was 99.1%, positive predictive value was 33.3%, and negative predictive value was 100% in comparison with CT. CONCLUSIONS MR imaging, with a sensitivity and negative predictive value of 100%, conclusively excludes SSC or PSC dehiscence. Negative findings on MR imaging preclude the need for CT to detect SC dehiscence. Only patients with positive findings on MR imaging should undergo CT evaluation.
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Affiliation(s)
- P Browaeys
- Department of Radiology, University Hospital, Lausanne, Switzerland.
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Gregory SM, Anderson CJ, Patel U. Radiofrequency ablation of large renal angiomyolipoma: median-term follow-up. Cardiovasc Intervent Radiol 2013; 36:682-9. [PMID: 23354958 DOI: 10.1007/s00270-012-0483-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2012] [Accepted: 09/02/2012] [Indexed: 12/01/2022]
Abstract
PURPOSE To study the feasibility of percutaneous radiofrequency ablation (RFA) of large angiomyolipomas (AMLs) using saline-cooled electrodes. MATERIALS AND METHODS Institutional Review Board approval for the study was received. Four patients (all female, age range 33-67 years) with large AMLs (maximal axis 6.1-32.4 cm) not suitable for embolotherapy or surgery consented to a trial of RFA. Procedures were performed under computerized tomographic guidance using 14G saline-infused electrodes. Two ablations (diameter 4-7 cm) were undertaken in each patient. Variables studied were technical success, treatment safety, alteration of tumor consistency, tumor size, effect on renal function, and medium-term freedom from haemorrhage. RESULTS All four patients underwent successful RFA without any intraprocedural complications. There has been no haemorrhage, or new renal specific symptom, during a minimum 48-month period, and normal renal function has been normal. On follow-up radiological imaging, the tumors have become fattier with involution of the soft-tissue elements (soft tissue-to-total tumor ratio decreased mean [range] of 0.26 [0.14-0.48] to 0.17 [0.04-0.34] U; p = 0.04 [paired Student t test]). Further evidence of treatment effect was the development of a capsule around the ablation zone, but there was no change in overall tumor volume (mean [range] 1,120 [118-2,845] to 1150 [90-3,013] ml; p = 1 [paired Student t test]). CONCLUSION RFA of large AMLs is technically feasible using saline-infused electrodes. The soft-tissue elements decreased in volume; the tumors become fattier; and there has been no renal haemorrhage during a 48-month period.
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Affiliation(s)
- S M Gregory
- Department of Radiology, St. George's Hospital and Medical School, Blackshaw Road, London, SW17 0QT, UK.
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Abstract
Erectile dysfunction (ED) represents a common and debilitating condition with a wide range of organic and non-organic causes. Physical aetiologies can be divided into disorders affecting arterial inflow, the venous occlusion mechanism or the penile structure itself. Various imaging modalities can be utilised to investigate the physical causes of ED, but penile Doppler sonography (PDS) is the most informative technique, indicated in those patients with ED who do not respond to oral pharmacological agents (e.g. phosphodiesterase type 5 inhibitors). This review will examine the anatomical and physiological basis of penile erection, the method for performing PDS and features of specific causes of ED, and will also consider the alternative imaging modalities available.
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Affiliation(s)
- D V Patel
- Department of Clinical Radiology, St George's Hospital, Blackshaw Road, London, UK.
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Abstract
Priapism is defined as a penile erection that persists for 4 h or longer and is unrelated to sexual activity. Its identification is important as lack of timely treatment (particularly of the low flow/ischaemic subgroup) can result in persisting erectile dysfunction as a consequence of irreversible corporal fibrosis. This review describes the physiology and anatomy of the normal erection, the aetiology and pathophysiology of the different types of priapism, and the role of the radiologist in the management of the condition. The treatment of iatrogenic priapism following intracavernosal injection of pharmacostimulant is discussed.
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Affiliation(s)
- J E Halls
- Department of Radiology, St George's Healthcare NHS Trust, London, UK
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Abstract
Transrectal ultrasound (TRUS) was first developed in the 1970s. TRUS-guided biopsy, under local anaesthetic and prophylactic antibiotics, is now the most widely accepted method to diagnose prostate cancer. However, the sensitivity and specificity of greyscale TRUS in the detection of prostate cancer is low. Prostate cancer most commonly appears as a hypoechoic focal lesion in the peripheral zone on TRUS but the appearances are variable with considerable overlap with benign lesions. Because of the low accuracy of greyscale TRUS, TRUS-guided biopsies have become established in the acquisition of systematic biopsies from standard locations. The number of systematic biopsies has increased over the years, with 10-12 cores currently accepted as the minimum standard. This article describes the technique of TRUS and biopsy and its complications. Novel modalities including contrast-enhanced modes and elastography as well as fusion techniques for increasing the sensitivity of TRUS-guided prostate-targeted biopsies are discussed along with their role in the diagnosis and management of prostate cancer.
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Affiliation(s)
- C J Harvey
- Department of Imaging, Imperial Healthcare Trust, Hammersmith Hospital, London, UK.
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Smith A, Patel U. “Bringing blood to the brain”—vascular bypass techniques and multidiscipinary approaches—2—technical aspects -development, challenges and points learned. Br J Oral Maxillofac Surg 2012. [DOI: 10.1016/j.bjoms.2012.04.161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Inazu T, Kawahara T, Endou H, Anzai N, Sebesta I, Stiburkova B, Ichida K, Hosoyamada M, Testa A, Testa A, Leonardis D, Catalano F, Pisano A, Mafrica A, Spoto B, Sanguedolce MC, Parlongo RM, Tripepi G, Postorino M, Enia G, Zoccali C, Mallamaci F, Working Group* M, Luque de Pablos A, Garcia-Nieto V, Lopez-Menchero JC, Ramos-Trujillo E, Gonzalez-Acosta H, Claverie-Martin F, Arsali M, Demosthenous P, Papazachariou L, Athanasiou Y, Voskarides K, Deltas C, Pierides A, Lee S, Jeong KH, Ihm C, Lee TW, Lee SH, Moon JY, Wi JG, Lee HJ, Kim EY, Rogacev K, Friedrich A, Hummel B, Berg J, Zawada A, Fliser D, Geisel J, Heine GH, Brabcova I, Brabcova I, Dusilova-Sulkova S, Dusilova-Sulkova S, Krejcik Z, Stranecky V, Lipar K, Marada T, Stepankova J, Viklicky O, Buraczynska M, Zukowski P, Zaluska W, Kuczmaszewska A, Ksiazek A, Gaggl M, Weidner S, Hofer M, Kleinert J, Fauler G, Wallner M, Kotanko P, Sunder-Plassmann G, Paschke E, Heguilen R, Heguilen R, Albarracin L, Politei J, Liste AA, Bernasconi A, Kusano E, Russo R, Pisani A, Messalli G, Imbriaco M, Prikhodina L, Ryzhkova O, Polyakov V, Lipkowska K, Ostalska-Nowicka D, Smiech M, Jaroniec M, Zaorska K, Szaflarski W, Nowicki M, Zachwieja J, Spoto B, Spoto B, Testa A, Sanguedolce MC, D'arrigo G, Parlongo RM, Pisano A, Tripepi G, Zoccali C, Mallamaci F, Moskowitz J, Piret S, Tashman A, Velez E, Lhotta K, Thakker R, Kotanko P, Cox J, Kingswood J, Mbundi J, Attard G, Patel U, Saggar A, Elmslie F, Doyle T, Jansen A, Jozwiak S, Belousova E, Frost M, Kuperman R, Bebin M, Korf B, Flamini R, Kohrman M, Sparagana S, Wu J, Ford J, Shah G, Franz D, Zonnenberg B, Cheung W, Urva S, Wang J, Frost M, Kingswood C, Budde K, Kofman T, Narjoz C, Raimbourg Q, Roland M, Loriot MA, Karras A, Hill GS, Jacquot C, Nochy D, Thervet E, Jagodzinski P, Mostowska M, Oko A, Nicolaou N, Kevelam S, Lilien M, Oosterveld M, Goldschmeding R, Van Eerde A, Pfundt R, Sonnenberg A, Ter Hal P, Knoers N, Renkema K, Storm T, Nielsen R, Christensen E, Frykholm C, Tranebjaerg L, Birn H, Verroust P, Neveus T, Sundelin B, Hertz JM, Holmstrom G, Ericson K, Fabris A, Cremasco D, Zambon A, Muraro E, Alessi M, D'angelo A, Anglani F, Del Prete D, Alkmim Teixeira A, Quinto BM, Jose Rodrigues C, Beltrame Ribeiro A, Batista M, Kerti A, Kerti A, Csohany R, Szabo A, Arkossy O, Sallai P, Moriniere V, Vega-Warner V, Lakatos O, Szabo T, Reusz G, Tory K, Addis M, Anglani F, Tosetto E, Meloni C, Ceol M, Cristofaro R, Melis MA, Vercelloni P, D'angelo A, Marra G, Kaniuka S, Nagel M, Wolyniec W, Obolonczyk L, Swiatkowska-Stodulska R, Sworczak K, Rutkowski B, Chen C, Jiang L, Chen L, Fang L, Mozes M. M, Boosi M, Rosivall L, Kokeny G, Diana R, Gross O, Johanna T, Rainer G, Ayse C, Henrik H, Gerhard-Anton M, Nabil M, Intissar E, Belge H, Belge H, Bloch J, Dahan K, Pirson Y, Vanhille P, Demoulin N. Genetic diseases. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Redgrave J, Chadha D, Patel U, Randall M. 010 Moyamoya and AVM: a management dilemma: Abstract 010 Figure 1. J Neurol Neurosurg Psychiatry 2012. [DOI: 10.1136/jnnp-2011-301993.52] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Sarkar S, Symes A, Gordon S, Singh R, Patel U, Anson K. UP-03.089 Removing Locking Nephrostomy Tubes–Beware the Retained Thread. Urology 2011. [DOI: 10.1016/j.urology.2011.07.1179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Abstract
We have developed methods to disperse and partially size separate NbSe(3) nanowires in aqueous surfactant solutions. These dispersions can easily be formed into thin films. Optical and electrical studies show these films to display sheet resistances and transmittances ranging from (460 Ω/□, 22%) to (12 kΩ/□, 79%) depending on thickness. For thicker films, we measured the transparent conducting figure of merit to be σ(DC, B)/σ(Op) = 0.32, similar to graphene networks. Thickness measurements gave individual values of σ(Op) = 17,800 S m(-1) and σ(DC, B) = 5700 S m(-1). Films thinner than ∼ 70 nm displayed reduced DC conductivity due to percolative effects.
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Affiliation(s)
- Sukanta De
- School of Physics and CRANN, Trinity College Dublin, Dublin 2, Ireland
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Henary HA, Kurzrock R, Falchook GS, Naing A, Moulder SL, Wheler JJ, Tsimberidou AM, Durand J, Yang P, Johansen MJ, Newman R, Khan R, Patel U, Hong DS. Final results of a first-in-human phase I trial of PBI-05204, an inhibitor of AKT, FGF-2, NF-Kb, and p70S6K in advanced cancer patients. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.3023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Tekkis PP, Georgiou PA, Constantinides VA, Patel U, Antoniou A, Goldin RD, Darzi AW, Cunningham D, Nicholls R, Brown G. Diagnostic accuracy and value of magnetic resonance imaging (MRI) in planning exenterative pelvic surgery for advanced colorectal pelvic cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.370] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
370 Background: Exenterative pelvic surgery is challenging and has been used in colorectal surgery to manage patients with advanced colorectal pelvic cancer. Resection of the tumor needs to be performed en-bloc and if feasible, without exposing the tumor, since this can compromise resection margins. This can only be performed through careful pre-operative staging. This study aimed to assess the diagnostic accuracy of MRI in detecting colorectal tumor invasion into seven intrapelvic compartments and its value in planning exenterative pelvic surgery. Methods: Sixty four consecutive patients underwent preoperative MRI planning for exenterative surgery, for locally advanced (n= 23) and recurrent (n= 41) pelvic colorectal cancer. Two radiologists reported tumor invasion for each of the seven anatomic surgical resection compartments and were blinded to histopathology and intraoperative reference standards. Sensitivity, specificity and predictive values were calculated for each compartments. Kaplan-Meier methodology was used to calculate survival rates. Interobserver agreement was assessed using Cohen's Kappa coefficient (k). Results: The sensitivity of MRI was ≥93.3% in all except for the lateral compartment where it was 89.3%. Its specificity for the posterior (82.2%), anterior below (86.4%) the peritoneal reflection compartments was lower compared to the rest of the compartments. MRI diagnosis of lateral (OR= 11.41, p= 0.033), anterior compartment above the peritoneal reflection (OR= 3.14, p= 0.005) and multicompartmental involvement (OR= 1.99, p<0.001) was associated with higher risk of incomplete resection which was subsequently found to be significant factor in predicting overall and disease free survival (p<0.05). The agreement between the two radiologists was found to be either good or very good for all the compartments (k>0.72). Conclusions: MRI is highly accurate in predicting tumor invasion within the intrapelvic compartments and it should be the pre-operative staging modality of choice when considering exenterative surgery for patients with locally advanced colorectal pelvic cancer. [Table: see text]
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Affiliation(s)
- P. P. Tekkis
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - P. A. Georgiou
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - V. A. Constantinides
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - U. Patel
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - A. Antoniou
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - R. D. Goldin
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - A. W. Darzi
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - D. Cunningham
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - R. Nicholls
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
| | - G. Brown
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus, London, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London,
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Georgiou PA, Tekkis PP, Patel U, Antoniou A, Darzi AW, Cunningham D, Koh D, Brown G. The added value of diffusion-weighted magnetic resonance imaging (DW-MRI) in the local staging of advanced colorectal pelvic cancer. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.4_suppl.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
378 Background: Surgeons rely on imaging to plan exenterative pelvic surgery for locally advanced primary and recurrent rectal cancer. Accurate local staging is vital in this process, as it provides information about the extent of the disease, facilitating the planning of the operation required to achieve complete resection. DW-MR imaging is a functional radiological modality that can provide indirect informationabout the water proton mobility within biologic tissue, without the need of a contrast agent. The aim of the present study was to assess the diagnostic accuracy and added value of diffusion DW-MRI in detecting colorectal tumor invasion into seven intrapelvic compartments for planning exenterative pelvic surgery. Methods: Thirty three consecutive patients were preoperatively staged using DW-MRI to undergo exenterative surgery for locally advanced primary (n=12) and recurrent (n=21) colorectal pelvic cancer. Two radiologists reported tumor invasion for each of the seven anatomic surgical resection compartments and were blinded to histopathology and intraoperative reference standards. Accuracy, sensitivity, specificity and predictive values were calculated for the seven intrapelvic compartments. Interobserver agreement was assessed using Cohen's Kappa (k) coefficient for each compartment. Results: The sensitivity of DW-MRI when used alone was low for all the compartments except the central (92%). Its specificity was very high for all the compartment (≥89.5%). Combining DW-MRI with conventional MRI increased the sensitivity for the lateral compartment by 8.3% to 100% and the specificity for the anterior compartment below the peritoneal reflection by 9.1% to 90.9%. The overall incremental value for the lateral compartment was 3%. The interobserver agreement was either good or very good (k≥0.669; p<0001) for all the compartments. Conclusions: DW-MRI can improve the diagnostic accuracy of conventional MRI when staging patients with advanced colorectal pelvic cancer. Diffusion images are cheap and easy to obtain. Therefore DW-MRI should always be used in combination with conventional MRI when considering patients for exenterative pelvic surgery. No significant financial relationships to disclose.
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Affiliation(s)
- P. A. Georgiou
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
| | - P. P. Tekkis
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
| | - U. Patel
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
| | - A. Antoniou
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
| | - A. W. Darzi
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
| | - D. Cunningham
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
| | - D. Koh
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
| | - G. Brown
- Imperial College, Chelsea and Westminster Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; Imperial College, Chelsea and Westminster Campus/The Royal Marsden MHS Foundation Trust, London, United Kingdom; The Royal Marsden NHS Foundation Trust, Sutton, United Kingdom; Imperial College, St. Mary's Campus/The Royal Marsden NHS Foundation Trust, London, United Kingdom; The Royal Marsden Hospital, Sutton, United Kingdom; The Royal Marsden Hospital NHS Foundation Trust, London, United
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