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Sakai A, Borza T, Antar A, Richmond E, Allen GO, Knoedler M, Manakas C, Huang W, Gralnek D, Grimes MD. Incidental Prostate Cancer Diagnosis Is Common After Holmium Laser Enucleation of the Prostate. Urology 2024; 183:170-175. [PMID: 38043905 PMCID: PMC10872358 DOI: 10.1016/j.urology.2023.11.014] [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: 08/19/2023] [Revised: 10/30/2023] [Accepted: 11/22/2023] [Indexed: 12/05/2023]
Abstract
OBJECTIVE To determine the incidence of incidental prostate cancer detection (iPCa) after holmium laser enucleation of the prostate (HoLEP). The published rate of iPCa after HoLEP is widely variable from 7% to 23% and we aim to define preoperative risk factors for iPCa to inform risk-adjusted preoperative evaluation for PCa. METHODS Consecutive patients undergoing HoLEP from 2018 to 2022 were included and comprehensive clinical data abstracted from a prospectively maintained database. iPCa was defined as a diagnosis of PCa on pathologic examination of the HoLEP specimen. Patients with and without iPCa were compared with respect to preoperative clinical variables. RESULTS Of 913 HoLEP patients, 183 (20%) were diagnosed with iPCa. Most patients (95%) had a preoperative prostate-specific antigen (PSA), 9% had negative MRI, and 30% had negative prostate biopsy. On multivariable analysis, PSA density (OR 1.06; 95% CI 1.03, 1.10; P < .001), preoperative biopsy status (OR 0.47, CI 0.30, 0.75; P = .002), and current 5-alpha reductase inhibitor use (OR 0.64, CI 0.43, 0.97; P = .034), were associated with iPCa diagnosis. CONCLUSION In a significantly prescreened population, we identified a 20% rate of iPCa after HoLEP. Preoperative characteristics associated with iPCa diagnosis included increasing age, increasing PSA density, and current 5-alpha reductase inhibitor use. However, these factors alone may be of limited clinical utility to prospectively identify patients at high risk of iPCa diagnosis. We suggest and advocate for development of a standardized, risk-adapted evaluation focused on expanded use of imaging and selective biopsy to prioritize identification of clinically significant PCa prior to nononcologic surgery.
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Affiliation(s)
- Akihisa Sakai
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Tudor Borza
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Ali Antar
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Ethan Richmond
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Glenn O Allen
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Margaret Knoedler
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Christopher Manakas
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Wei Huang
- Department of Pathology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Daniel Gralnek
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI
| | - Matthew D Grimes
- Department of Urology, School of Medicine and Public Health, University of Wisconsin, Madison, WI.
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Alebouyeh MR, Morsali SF, Zojaji F, Ebrahimi SA, Ahani A, Antar A. Refractory Complex Regional Pain Syndrome: A Case Report and Review of Literature. Anesth Pain Med 2023; 13:e135286. [PMID: 38024007 PMCID: PMC10676669 DOI: 10.5812/aapm-135286] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 04/03/2023] [Accepted: 05/10/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction Complex regional pain syndrome (CRPS) is characterized by extreme pain in a limb disproportional to the clinical history or physical findings accompanied by the signs of autonomic dysfunction. The pathophysiology of CRPS is obscure, making it challenging to treat. Treatment options include medications, physical therapy, and psychological support. In some cases, surgery or other minimally-invasive procedures such as nerve blocks may be recommended, while several novel treatments, such as ozone therapy, lack sufficient clinical evidence. Case Presentation A 40-year-old man with CRPS was referred to our clinic with pain in his right arm and left lower leg. The patient had a history of trauma to the ulnar nerve and had undergone a sural to ulnar nerve autograft surgery. After the surgery, the patient's symptoms began, primarily in the right arm. Despite receiving conventional drugs, multiple nerve blocks, and lidocaine patches, the patient's symptoms persisted. In addition, we tried medical ozone for 14 sessions along with ketamine infusion, but these treatments were also ineffective. Conclusions We emphasize the importance of studying and developing more effective treatments for CRPS and suggest that further randomized clinical trials are needed to determine whether ozone therapy is effective for patients with severe, intractable CRPS symptoms.
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Affiliation(s)
- Mahmood-Reza Alebouyeh
- Rasoul Akram Medical Center, Iran University of Medical Sciences, Tehran, Iran
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyedeh Fatemeh Morsali
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Faegheh Zojaji
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyed Ali Ebrahimi
- Student Research Committee, Mashhad Branch, Islamic Azad University, Mashhad, Iran
| | - Ali Ahani
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Antar
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
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Rahimzadeh P, Ahani A, Antar A, Morsali SF, Zojaji F, Dikafraz Shokooh G. Erector Spinae Plane Block for the Treatment of Intractable Pain in a Patient with Pancoast Tumor: A Case Report. Anesth Pain Med 2023; 13:e135829. [PMID: 38021326 PMCID: PMC10664171 DOI: 10.5812/aapm-135829] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/26/2023] [Accepted: 05/05/2023] [Indexed: 12/01/2023] Open
Abstract
Introduction The erector spinae plane (ESP) block is a regional anesthetic technique that involves injecting a local anesthetic below the erector spinae muscle in an interfascial plane. Case Presentation We report a case of a 66-year-old man with cervicothoracic junction pain caused by an advanced Pancoast tumor. The administration of ESP block at the T2-T3 level led to pain relief of more than 50% in this patient after two sessions. Conclusions Therefore, the application of this method of regional analgesia is both convenient and safe and reduces opioid consumption. Further studies are needed to evaluate the safety and effectiveness of continuous blocks in outpatient settings.
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Affiliation(s)
- Poupak Rahimzadeh
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Ahani
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Antar
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Seyedeh Fatemeh Morsali
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Faegheh Zojaji
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Gholamali Dikafraz Shokooh
- Pain Research Center, Department of Anesthesiology and Pain Medicine, Iran University of Medical Sciences, Tehran, Iran
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Antar A, Bachtel HA, Bates JN, Kim SJ, Saleem A, Bhatia V, Link RE, Koh CJ. Robotic partial nephrectomy in the pediatric population: Cumulative experience at a large pediatric hospital. J Pediatr Urol 2022; 18:538-540. [PMID: 35931605 DOI: 10.1016/j.jpurol.2022.06.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/23/2021] [Revised: 06/24/2022] [Accepted: 06/29/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Robotic partial nephrectomy is a complex minimally invasive procedure that addresses the intricate anatomy of renal masses while maximizing preservation of renal function. However, while common in adults, the evolution toward these minimally invasive procedures for children has been slow due to the anticipated technical difficulties in pediatric-sized working spaces. We present our technique and our experience with pediatric robotic partial nephrectomies that were performed with our adult urology colleagues at a large free-standing children's hospital. METHODS The video describes our technique for a robotic right-sided partial nephrectomy in a 14-month-old male patient. The video highlights several steps of the procedure including positioning and port placement, tumor resection, and renorrhaphy. RESULTS Six pediatric patients underwent robotic partial nephrectomy with our associated adult urologic surgeons from January 2019 to January 2021. The surgical pathology revealed both benign as well as malignant diagnoses. CONCLUSION Robotic partial nephrectomy is a feasible minimally invasive procedure in children. The collaboration with adult minimally invasive urologic surgeons with extensive adult procedural experience is recommended to avoid potential complications with this technically challenging procedure in pediatric patients. Pediatric strategies for robotic port placement are often needed to accommodate the smaller size of pediatric patients as well as tumor size.
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Affiliation(s)
- Ali Antar
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Hannah Agard Bachtel
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA; Division of Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA.
| | - Jenna N Bates
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Soo Jeong Kim
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA; Division of Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA
| | - Asad Saleem
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Vinaya Bhatia
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA; Division of Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA; Department of Urology, University of Wisconsin-Madison, Madison, WI, USA
| | - Richard E Link
- Division of Endourology and Minimally-Invasive Surgery, Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Chester J Koh
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA; Division of Urology, Department of Surgery, Texas Children's Hospital, Houston, TX, USA
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El-Khatib AM, Shalaby TI, Antar A, Elsafi M. Improving Gamma Ray Shielding Behaviors of Polypropylene Using PbO Nanoparticles: An Experimental Study. Materials (Basel) 2022; 15:ma15113908. [PMID: 35683205 PMCID: PMC9181843 DOI: 10.3390/ma15113908] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/18/2022] [Accepted: 05/23/2022] [Indexed: 02/01/2023]
Abstract
Recently, polymers have entered into many medical and industrial applications. This work aimed to intensively study polypropylene samples (PP) embedded with micro and nanoparticles of PbO for their application in radiation shielding. Samples were prepared by adding 10%, 30%, and 50% by weight of PbO microparticles (mPbO) and adding 10% and 50% PbO nanoparticles (nPbO), in addition to the control sample (pure polypropylene). The morphology of the prepared samples was tested; on the other hand, the shielding efficiency of gamma rays was tested for different sources with different energies. The experimental linear attenuation coefficient (LAC) was determined using a NaI scintillation detector, the experimental results were compared with NIST-XCOM results, and a good agreement was noticed. The LAC was 0.8005 cm−1 for PP-10%nPbO and 0.6283 cm−1 for PP-10%mPbO while was 5.8793 cm−1 for PP-50%nPbO and 3.9268 cm−1 for PP-50%mPbO at 0.060 MeV. The LAC values have been converted to some specific values, such as half value layer (HVL), mean free path (MFP), tenth value layer (TVL), and radiation protection efficiency (RPE) which are useful for discussing the shielding capabilities for gamma-rays. The results of shielding parameters reveal that the PP embedded with nPbO gives better attenuation than its counterpart pp embedded with mPbO at all studied energies.
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Affiliation(s)
- Ahmed M. El-Khatib
- Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt;
| | - Thanaa I. Shalaby
- Department of Medical Biophysics, Medical Research Institute, Alexandria University, Alexandria 21561, Egypt; (T.I.S.); (A.A.)
| | - Ali Antar
- Department of Medical Biophysics, Medical Research Institute, Alexandria University, Alexandria 21561, Egypt; (T.I.S.); (A.A.)
| | - Mohamed Elsafi
- Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt;
- Correspondence:
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El-Khatib AM, Shalaby TI, Antar A, Elsafi M. Experimental Study of Polypropylene with Additives of Bi 2O 3 Nanoparticles as Radiation-Shielding Materials. Polymers (Basel) 2022; 14:polym14112253. [PMID: 35683923 PMCID: PMC9182889 DOI: 10.3390/polym14112253] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/26/2022] [Accepted: 05/28/2022] [Indexed: 01/12/2023] Open
Abstract
This work aimed to intensively study polypropylene samples (PP) embedded with micro- and nanoparticles of Bi2O3 for their application in radiation shielding. Samples were prepared by adding 10%, 20%, 30%, 40%, and 50% of Bi2O3 microparticles (mBi2O3) by weight, and adding 10% and 50% of Bi2O3 nanoparticles (nBi2O3), in addition to the control sample (pure polypropylene). The morphology of the prepared samples was tested, and also, the shielding efficiency of gamma rays was tested for different sources with different energies. The experimental LAC were determined using a NaI scintillation detector, the experimental results were compared with NIST-XCOM results, and a good agreement was noticed. The LAC values have been used to calculate some specific parameters, such as half value layer (HVL), mean free path (MFP), tenth value layer (TVL), and radiation protection efficiency (RPE), which are useful for discussing the shielding capabilities of gamma rays. The results of the shielding parameters show that the PP embedded with nBi2O3 gives better attenuation than its counterpart, PP embedded with mBi2O3, at all studied energies.
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Affiliation(s)
- Ahmed M. El-Khatib
- Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt;
| | - Thanaa I. Shalaby
- Department of Medical Biophysics, Medical Research Institute, Alexandria University, Alexandria 21561, Egypt; (T.I.S.); (A.A.)
| | - Ali Antar
- Department of Medical Biophysics, Medical Research Institute, Alexandria University, Alexandria 21561, Egypt; (T.I.S.); (A.A.)
| | - Mohamed Elsafi
- Physics Department, Faculty of Science, Alexandria University, Alexandria 21511, Egypt;
- Correspondence:
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Khera M, Than JK, Anaissie J, Antar A, Song W, Losso B, Pastuszak A, Kohn T, Mirabal JR. Penile vascular abnormalities in young men with persistent side effects after finasteride use for the treatment of androgenic alopecia. Transl Androl Urol 2020; 9:1201-1209. [PMID: 32676403 PMCID: PMC7354335 DOI: 10.21037/tau.2020.03.21] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Background The constellation of persistent sexual, neurological, and physical adverse effects in patients who discontinue 5α-reductase inhibitors (5ARIs) has garnered recent concern. The objective of this study was to evaluate potential penile vascular changes and persistent adverse effects of 5ARIs in men treated for androgenic alopecia (AGA). Methods This was a prospective case-control study with 25 subjects with a history of 5ARI use for AGA and 28 controls. Patient self-reported questionnaires including the International Index of Erectile Function (IIEF), International Prostate Symptom Score (IPSS), Patient Health Questionnaire-9 (PHQ-9), the Epworth Sleepiness Scale (ESS) and the Androgen Deficiency in the Aging Male (ADAM) were used. Penile duplex Doppler ultrasound (PDDU) results were evaluated in men with a history of 5ARI use. Results A significant difference in total IIEF score between the 5ARI (median: 35; IQR: 29–43) and control group (median: 29; IQR: 27–32) (P=0.035) was observed. Seventeen 5ARI subjects (68%) had a vascular abnormality on PDDU. The median (IQR) for total IPSS score for the 5ARI group was 10 [5–16] compared to 3 [2–8] for the controls (P<0.01). The 5ARI group had a higher median total PHQ-9 score than controls [10 (6.5–16) vs. 1 (0–2) (P<0.001)]. Two subjects (8%) committed suicide during or after the study. Conclusions While the sexual side effects of 5ARIs are well known, there may be persistent genitourinary, physical, psycho-cognitive, anti-androgenic and penile vascular changes after 5ARI discontinuation. Use of 5ARIs for treatment of AGA may lead to persistent sexual, genitourinary, physical, psycho-cognitive, and anti-androgenic sequelae even after cessation of 5ARI therapy.
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Affiliation(s)
- Mohit Khera
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | | | - James Anaissie
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Ali Antar
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Weitao Song
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Boriss Losso
- Scott Department of Urology, Baylor College of Medicine, Houston, TX, USA
| | - Alexander Pastuszak
- Division of Urology, Department of Surgery, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Taylor Kohn
- The James Buchanan Brady Urological Institute at Johns Hopkins School of Medicine, Baltimore, MD, USA
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Rivera Mirabal J, Than J, Annaisie J, Antar A, Song W, Losso B, Pastuszak A, Kohn T, Khera M. 124 The Persistent Effects of 5α-reductase Inhibitors Used in the Treatment of Androgenic Alopecia on Men's Health. J Sex Med 2020. [DOI: 10.1016/j.jsxm.2019.11.070] [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]
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Antar A, AlJawad H, AlMuslim A, El-Majzoub N. Isolated late recurrence of epithelial ovarian cancer in cervical lymph nodes. EUR J GYNAECOL ONCOL 2019. [DOI: 10.12892/ejgo4775.2019] [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: 11/13/2022]
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Antar A, Boyle A, Patel T. Angiomyolipoma of the Adrenal Gland: A Case Presentation and a Review of Adrenal Lipomatous Tumors. Urol Case Rep 2017; 12:59-61. [PMID: 28367409 PMCID: PMC5369691 DOI: 10.1016/j.eucr.2016.11.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 11/02/2016] [Indexed: 11/30/2022] Open
Abstract
Angiomyolipoma (AML) is a typically benign renal tumor derived from mesenchymal tissue. Extrarenal occurrences of AML are possible, but the adrenals are an exceedingly rare site. To date, a total of 4 cases of adrenal AML have been documented in the English literature.1-3 We present a case of right-sided adrenal AML found in a patient who initially presented with right-sided flank pain. Differential diagnosis of adrenal masses should include lipomatous tumors, as operative considerations and prognoses can be drastically altered.
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Affiliation(s)
- Ali Antar
- Department of Urology, University of South Florida Morsani College of Medicine, Tampa, FL, USA
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Antar A, Boyle A, Lockhart JL, Patel T. Robotic Assisted Laparoscopic Partial Cystectomy as Treatment for Pseudosarcomatous Fibromyxoid Tumor of the Bladder. Urol Case Rep 2017; 12:56-58. [PMID: 28367408 PMCID: PMC5369697 DOI: 10.1016/j.eucr.2017.02.009] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 02/09/2017] [Indexed: 11/17/2022] Open
Abstract
This case is of a 26 year old female evaluated for gross hematuria and suprapubic pain found to have a large bladder tumor. She subsequently underwent successful robotic assisted laparoscopic partial cystectomy. Pathology revealed pseudosarcomatous fibromyxoid tumor, an uncommon lesion that occurs most frequently among young females and must be distinguished from other malignant lesions, as treatment may differ. Partial cystectomy via robotic approach has never been described in the literature as a treatment option for this type of bladder lesion. In this case, the patient did exceptionally well upon follow-up. As such, robotic assisted laparoscopic partial cystectomy is presented a viable option for treatment of select patients with pseudosarcomatous fibromyxoid tumor.
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Affiliation(s)
- Ali Antar
- Department of Urology, University of South Florida, Tampa, FL, USA
| | - Alexander Boyle
- Department of Urology, University of South Florida, Tampa, FL, USA
| | - Jorge L Lockhart
- Department of Urology, University of South Florida, Tampa, FL, USA
| | - Trushar Patel
- Department of Urology, University of South Florida, Tampa, FL, USA
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Bhat A, Antar A, Gan G, Mojica E, Banwait K, Tan T. Assessment of Right Ventricular Metrics in Patients with Ischaemic and Non-Ischaemic Cardiomyopathy. Heart Lung Circ 2017. [DOI: 10.1016/j.hlc.2017.06.466] [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: 11/25/2022]
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Hoteit R, Bazarbachi A, Antar A, Salem Z, Shammaa D, Mahfouz R. KIR genotype distribution among patients with chronic lymphocytic leukemia: Is there a role for KIR 2DS4 and KIR 2DS5 genes? Gene Reports 2016. [DOI: 10.1016/j.genrep.2015.12.003] [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]
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Psaltis J, Reintgen E, Antar A, Giori M, Alvin L, Benjamin A, Budny B, Gianangelo T, Gruman A, Stamas A, Reintgen M, Giuliano R, Smith J, Reintgen D. Malignant melanoma in the pediatric population. World J Surg Proced 2015; 5:229-234. [DOI: 10.5412/wjsp.v5.i3.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Revised: 07/01/2015] [Accepted: 09/08/2015] [Indexed: 02/06/2023] Open
Abstract
Controversial pigmented lesions in children are a problem for pathologist, clinicians and families that are confronted with this dilemma. Some skin lesions in this population defy diagnosis with pathologists split between a benign diagnosis and a cancer diagnosis. Three cases of controversial pigmented lesions in the pediatric population are presented. Three patients underwent radical resection of the controversial pigmented lesion, intra-operative lymphatic mapping and sentinel lymph node (SLN) biopsy. Due to the low morbidity of the SLN procedure a case is made to perform lymphatic mapping in this clinical scenario. If the SLNs are negative, not much is lost except for the scar and this becomes another line of evidence that perhaps the original lesion was benign. If the SLN shows metastatic cells, then the original skin lesion must be malignant and the patient is offered stage III recommendations that would include complete node dissections and adjuvant Interferon therapy. This strategy provides for adequate treatment of the worse-case scenario, that the skin lesion is malignant. The cost to the patient is a low morbidity procedure, the SLN biopsy.
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Hoteit R, Bazarbachi A, Antar A, Salem Z, Shammaa D, Mahfouz R. KIR genotype distribution among patients with multiple myeloma: Higher prevalence of KIR 2DS4 and KIR 2DS5 genes. Meta Gene 2014; 2:730-6. [PMID: 25606456 PMCID: PMC4287873 DOI: 10.1016/j.mgene.2014.09.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 09/09/2014] [Accepted: 09/10/2014] [Indexed: 12/30/2022] Open
Abstract
Introduction Natural killer (NK) cells possess an antitumor activity against multiple myeloma cells proven by the susceptibility of plasmocytes to NK lysis. In the early stage of MM, the killing of MM cells is mediated by natural cytotoxicity receptors (NRC) and NKG2D-dependent pathway, while in the late stage, NK cells lose their killing potential against MM cells due to the high expression of HLA class I molecules on MM cells. Aim The aim of this paper is to study KIR expression of NK cells in MM patients and in healthy controls, to check for any association between KIR genotypes and MM. Methods KIR genotype was analyzed in 120 healthy Lebanese individuals and 34 MM patients using the KIR Genotyping SSP kit. Results KIR 2DS4*001/002 and KIR 2DS5 were found to be significantly more prevalent among MM patients as compared to controls. For MM patients, the AA, AB, and BB genotype frequencies were, respectively, 38.23%, 47.06% and 14.71% with an A:B ratio of 1.62:1. As for the healthy controls, the AA, AB, and BB genotype frequencies were, respectively, 39.17%, 50%, and 10.83% with an A:B ratio of 1.80:1. Conclusion The interesting observation of the significant presence of KIR2DS4 and KIR2DS5 genes more among multiple myeloma patients than controls is worth further clinical, translational as well as survival research studies in these cases. KIR genotyping has been implicated in a variety of clinical and immunological disorders. This study is the first international research paper that describes the prevalence of KIR genes among Multiple Myeloma patients Results were compared to a large healthy control population sample
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Affiliation(s)
- R Hoteit
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut 1107-2020, Lebanon
| | - A Bazarbachi
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut 1107-2020, Lebanon
| | - A Antar
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut 1107-2020, Lebanon
| | - Z Salem
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut 1107-2020, Lebanon
| | - D Shammaa
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut 1107-2020, Lebanon
| | - R Mahfouz
- Department of Pathology and Laboratory Medicine, American University of Beirut Medical Center, Beirut 1107-2020, Lebanon
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