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Cassieri C, Pica R, Avallone EV, Zippi M, Crispino P, De Nitto D, Paoluzi P, Brandimarte G, Lecca PG, Elisei W, Picchio M, Tursi A. Prevalence of Colonic Diverticulosis in Patients Affected by Ulcerative Colitis: A Prospective Study. J Clin Gastroenterol 2016; 50 Suppl 1:S33-5. [PMID: 27622358 DOI: 10.1097/mcg.0000000000000631] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
BACKGROUND Diverticulosis of the colon is an acquired condition that results from herniation of the mucosa and submucosa through defects in the muscular layer. The true prevalence of colonic diverticulosis is difficult to measure because most individuals are asymptomatic. In particularly, in literature, there are few studies about the prevalence of colonic diverticulosis in patients affected by ulcerative colitis (UC). GOALS To investigate the prevalence of colonic diverticulosis in UC and in adult patients referred in a single center. STUDY Consecutive patients, referred to our institution to undergo a colonoscopy for colorectal cancer screening and/or for UC assessment, between January 1, 2014 and December 31, 2014, were studied. RESULTS Six hundred five consecutive patients were studied: 438 (72.4%) due to colorectal cancer screening (group A) and 167 (27.6%) for UC assessment (group B). Prevalence of colonic diverticulosis was higher in group A than group B (27.8% vs. 10.8%, P<0.0001). Female gender in patients with colonic diverticulosis was higher in group A than group B (55.7% vs. 22.2%, P=0.0106). Sigma and left colon was mainly involved in group A than group B (97.6% vs. 66.7%, P=0.0001), whereas in group B the right colon was mainly involved in group B versus group A (22.2% vs. 0.8%, P=0.0009). CONCLUSIONS Prevalence of colonic diverticulosis was significantly lower in patients with UC than in control group. UC may, therefore, be a protective factor for colonic diverticulosis occurrence.
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Affiliation(s)
- Claudio Cassieri
- *Department of Internal Medicine and Medical Specialties, "Sapienza" University †Division of Internal Medicine and Gastroenterology, "Cristo Re" Hospital, GIOMI Group ‡Division of Gastroenterology, ASL Roma H, Albano Laziale §Division of Surgery, "P. Colombo" Hospital, Velletri, Rome ∥Gastroenterology Service, ASL BAT, Andria, BT, Italy
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Böcker U, Dinter D, Litterer C, Hummel F, Knebel P, Franke A, Weiss C, Singer MV, Löhr JM. Comparison of magnetic resonance imaging and video capsule enteroscopy in diagnosing small-bowel pathology: localization-dependent diagnostic yield. Scand J Gastroenterol 2010; 45:490-500. [PMID: 20132082 DOI: 10.3109/00365520903567817] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE New technology has considerably advanced the diagnosis of small-bowel pathology. However, its significance in clinical algorithms has not yet been fully assessed. The aim of the present analysis was to compare the diagnostic utility and yield of video-capsule enteroscopy (VCE) to that of magnetic resonance imaging (MRI) in patients with suspected or established Crohn's disease (Group I), obscure gastrointestinal blood loss (Group II), or suspected tumors (Group III). MATERIAL AND METHODS Forty-six out of 182 patients who underwent both modalities were included: 21 in Group I, 20 in Group II, and five in Group III. Pathology was assessed in three predetermined sections of the small bowel (upper, middle, and lower). The McNemar and Wilcoxon tests were used for statistical analysis. RESULTS In Group I, lesions were found by VCE in nine of the 21 patients and by MRI in six. In five patients, both modalities showed pathology. In Group II, pathological changes were detected in 11 of the 20 patients by VCE and in eight patients by MRI. In five cases, pathology was found with both modalities. In Group III, neither modality showed small-bowel pathology. For the patient groups combined, diagnostic yield was 43% with VCE and 30% with MRI. The diagnostic yield of VCE was superior to that of MRI in the upper small bowel in both Groups I and II. CONCLUSION VCE is superior to MRI for the detection of lesions related to Crohn's disease or obscure gastrointestinal bleeding in the upper small bowel.
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Affiliation(s)
- Ulrich Böcker
- University Medical Centre Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany.
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De Vargas Macciucca M, Casale A, Manganaro L, Floriani I, Fiore F, Marchetti L, Panzironi G. Rectal villous tumours: MR features and correlation with TRUS in the preoperative evaluation. Eur J Radiol 2009; 73:329-33. [PMID: 19157738 DOI: 10.1016/j.ejrad.2008.11.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2008] [Revised: 11/23/2008] [Accepted: 11/26/2008] [Indexed: 01/13/2023]
Abstract
AIM The aim of this study was to assess the clinical relevance of MR and transrectal ultrasonography (TRUS) imaging of rectal villous tumours to elucidate the correlation between imaging results and specific histopathological tumour features, such as tumour size (T) and lymph node involvement (N), in order to establish the better technique for the pre-surgical patient evaluation. PATIENTS AND METHODS 23 cases of villous tumours of the rectum were studied with phased-array MR and TRUS. All patients underwent either surgical or endoscopic treatment. Final diagnosis was based on histopathological results. In particular, the following features were characterized by the imaging techniques mentioned above: lesion site, distance between lesion and ano-rectal junction, size, morphology and contrast enhancement of lesions, fluid layer around the lesion, alterations of the deep layers of the rectal wall, sphincter infiltration, presence or absence of mesorectal, iliac and obturatory lymphnode involvement. RESULTS Histology established muscular involvement in 7 cases (T2), perirectal fat infiltration in 1 case (T3); in the remaining 15 cases, staging was Tis-T1. In 17/23 cases (73.9%) the lesions were correctly staged with both imaging techniques, whereas in 5/23 cases (21.7%) the lesions were overstaged. No cases were understaged. TRUS concorded with histological exams in 17/23 cases (73.9%). 5/23 cases (21.7%) were overstaged and 1/23 (4%) was understaged. MR and TRUS were in accordance in 20/23 cases (86.9%). DISCUSSION Considering the frequent degeneration of villous tumours, correct preoperative identification and precise evaluation of these lesions, such as the detection of rectal wall invasion, is essential in deciding optimal treatment strategy. MRI and TRUS allow the identification of specific features of villous tumours and of malignant degeneration, allowing for a correct local disease staging.
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Affiliation(s)
- Marina De Vargas Macciucca
- Radiology Section of Emergency Department, Azienda Policlinico Umberto I Rome, via Alberico Albricci 28, 00194 Rome, Italy.
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Salomon LJ, Siauve N, Taillieu F, Balvay D, Vayssettes C, Frija G, Ville Y, Cuénod CA, Clément O. In Vivo Dynamic MRI Measurement of the Noradrenaline-induced Reduction in Placental Blood Flow in Mice. Placenta 2006; 27:1007-13. [PMID: 16316684 DOI: 10.1016/j.placenta.2005.10.007] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2005] [Revised: 10/04/2005] [Accepted: 10/18/2005] [Indexed: 11/19/2022]
Abstract
PURPOSE We developed a new model for in vivo placental perfusion measurements based on dynamic MRI in mice. As noradrenaline has been implicated in the pathogenesis of preeclampsia, we examined whether it reduced placental perfusion in mice, and whether such a reduction could be detected with our MRI model. MATERIALS AND METHODS Mice at 16 days of gestation were injected intramuscularly with saline or noradrenaline solution. A conventional gadolinium chelate was then injected IV, and a single-slice T1-weighed 2D Fast SPGR sequence was acquired for 200 s. Signal intensity was measured on all the images and converted into contrast agent tissue concentrations in the maternal left ventricle (input function) and placentas. A one-compartment model was developed using compartmental and numerical modeling software. Mean blood flow (F) was calculated from a transfer constant. RESULTS Twenty-six mice were studied, yielding a total of 55 MRI measurements of placental perfusion (29 in the control group and 26 in the noradrenaline group). Mean placental blood flow (F) was significantly lower in the noradrenaline group (0.72+/-0.84 ml/min/g of placenta) than in the control group (1.26+/-0.54 ml/min/g of placenta). CONCLUSION Noradrenaline reduces placental perfusion in mice. Our MRI dynamic model might be useful for detecting and investigating abnormal placental blood flow, thereby avoiding the need for invasive procedures and animal sacrifice.
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Affiliation(s)
- L J Salomon
- Faculté de Médecine, Laboratoire de Recherche en Imagerie, Faculté de médecine Necker Enfants Malades, Université Paris Descartes, Paris, France.
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Martin DR, Danrad R, Herrmann K, Semelka RC, Hussain SM. Magnetic resonance imaging of the gastrointestinal tract. Top Magn Reson Imaging 2005; 16:77-98. [PMID: 16314698 DOI: 10.1097/01.rmr.0000179461.55234.7d] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Comprehensive bowel examination results from the combined use of T2-weighted single-shot and breath hold T1-weighted gradient echo, minus/plus fat suppression, and gadolinium-enhanced 3D gradient echo (3D VIBE, T1 FAME, 3D THRIVE). Gadolinium-enhanced imaging should be performed dynamically, but the venous 60- to 90-second delayed phase images with fat suppression are generally the most valuable. Removal of fat signal for detection of enhancing normal and abnormal structures is critical. Newly available True-FISP (FIESTA, BFFE) sequences obtained in the 2D form can be very helpful in delineation of bowel wall pathology and overall bowel anatomy, particularly when combined with a water-based intraluminal distending agent. Advantages include rapid acquisition, high signal-to-noise, and motion insensitivity. Generalized protocol for comprehensive evaluation of the entire abdomen and pelvis can be used for the following bowel indications: type and severity of inflammatory bowel disease (IBD); identifying enteric abscesses and fistulae; preoperative staging of malignant neoplasms, including rectal carcinoma; differentiating postoperative and radiation therapy changes from recurrent carcinoma; follow-up evaluation of metastases response to localized ablative or systemic chemotherapy. For improved visualization of bowel wall in dedicated examinations, bowel distension should be achieved using either orally or rectally delivered contrast agents to produce either bright or dark lumen. We have found 2D True-FISP without fat suppression superior to 3D True-FISP and to single-shot echo-train sequences to provide a T2-weighted image of bowel morphology. Strengths include: performed without fat suppression results in the very dark bowel wall being sandwiched between intermediate high signal fat adjacent to bowel serosa, and very high lumen signal from water-distending agent; 2D True-FISP provides motion insensitivity that is lost if 3D is used; True-FISP produces better edge sharpness than single-shot echo-train, higher contrast, and resists flow void artifacts commonly seen with single-shot echo-train imaging combined with a water distending agent. Drawbacks of this technique include: artifacts related to extreme sensitivity to field inhomogeneity, including air-soft tissue interfaces at the patient skin surface, and from retained bowel gas; retained bowel gas is dark against dark bowel wall, impairing bowel wall assessment; and True-FISP does not provide sensitivity for edema, which is superior on single-shot echo-train imaging. Small/large bowel indications for MRI include: inflammatory bowel disease, infectious disease including abscess evaluation or for appendicitis, inflammatory conditions including ischemia, and partial obstruction, malnutrition, and neoplasm search.
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Affiliation(s)
- Diego R Martin
- Emory University School of Medicine, Department of Radiology, 3164 Clifton Rd, Atlanta, GA 30322, USA.
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Low RN, Chen SC, Barone R. Distinguishing benign from malignant bowel obstruction in patients with malignancy: findings at MR imaging. Radiology 2003; 228:157-65. [PMID: 12832579 DOI: 10.1148/radiol.2281020728] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
PURPOSE To retrospectively evaluate the features of benign versus malignant bowel obstruction on unenhanced and gadolinium-enhanced spoiled gradient-echo magnetic resonance (MR) images in patients with malignancy. MATERIALS AND METHODS Forty-eight patients with malignancy and bowel obstruction underwent abdominal and pelvic MR imaging. Two blinded radiologists independently evaluated each study for dilated bowel, transition point, level of obstruction, obstructing mass, mural thickening and enhancement, and peritoneal disease. Benign obstruction was recorded if no mass was present and if mural thickening (when present) was segmental or diffuse. Malignant bowel obstruction was recorded if there was a mass, a disseminated abdominal tumor, or focal mural thickening. MR images were compared with surgical findings, follow-up imaging studies, and clinical outcome. chi2 test and Fisher exact test were used to assess the relationship between the MR features and benign versus malignant obstruction. RESULTS Bowel obstruction had a benign cause in 19 patients and a malignant cause in 29 patients. Observer 1 correctly characterized benign bowel obstruction in 17 of 19 patients and malignant bowel obstruction in 27 of 29 patients. The sensitivity of observer 1 for characterizing malignant obstruction was 93%, specificity was 89%, and accuracy was 92%. Observer 2 correctly characterized benign bowel obstruction in 18 of 19 patients and malignant bowel obstruction in 26 of 29 patients. The sensitivity of observer 2 for characterizing malignant obstruction was 90%, specificity was 95%, and accuracy was 92%. Malignant bowel obstruction was present in 24 of 25 patients with an obstructing mass (P <.001). All 16 patients with focal mural thickening had malignant obstruction. Benign obstruction was present in four of five patients with diffuse mural thickening. Segmental mural thickening occurred in four patients with serosal metastases and in 11 patients with benign bowel obstruction. More extensive peritoneal thickening and enhancement correlated with malignant obstruction. CONCLUSION In patients with malignancy who have symptoms indicative of bowel obstruction, gadolinium-enhanced MR imaging can help distinguish benign from malignant causes of bowel obstruction.
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Affiliation(s)
- Russell N Low
- Department of Radiology, Sharp Memorial Hospital and Sharp and Children's MRI Center, 7901 Frost St, San Diego, CA 92123, USA
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Crozier F, Portier F, Wilshire P, Navarro-Biou A, Panuel M. [CT scan diagnosis of colo-colic intussusception due to a lipoma of the left colon]. ANNALES DE CHIRURGIE 2002; 127:59-61. [PMID: 11833309 DOI: 10.1016/s0003-3944(01)00670-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We report the case of a 27 years-old man with a left colo-colic intussuception due to a lipoma. CT scan allowed diagnosis of the obstruction, of the intussuception and showed his cause as an intraluminal fatty mass in the left colic angle, typical of lipoma. Resection of the mass was performed and mature fat cells were identified microscopically.
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Affiliation(s)
- F Crozier
- Service de radiologie, hôpital Nord, Chemin-des-Bourrelys, 13915 Marseille, France.
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Ferraris R, del Piano A, Galli JJ. Role of magnetic resonance imaging in the staging of gastrointestinal neoplasms. SEMINARS IN SURGICAL ONCOLOGY 2001; 20:122-9. [PMID: 11398205 DOI: 10.1002/ssu.1025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A concise review is presented of the current applications and techniques of magnetic resonance imaging (MRI) in the field of diagnostic imaging of oncologic disease of the gastrointestinal tract, with a summary of the diagnostic possibilities of MRI in the various types of tumor pathology of the gastrointestinal tract. We conclude with a review of the specific situations in which MRI presents distinct advantages over other diagnostic imaging methods (such as computed tomography and ultrasound).
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Affiliation(s)
- R Ferraris
- Department of Radiology, Ospedale Cottolengo, Turin, Italy.
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Chung JJ, Semelka RC, Martin DR, Marcos HB. Colon diseases: MR evaluation using combined T2-weighted single-shot echo train spin-echo and gadolinium-enhanced spoiled gradient-echo sequences. J Magn Reson Imaging 2000; 12:297-305. [PMID: 10931593 DOI: 10.1002/1522-2586(200008)12:2<297::aid-jmri12>3.0.co;2-q] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
This study demonstrates the appearance of large bowel diseases on magnetic resonance (MR) images using breath-hold T2-weighted half-Fourier acquisition snapshot turbo spin-echo (HASTE), breath-hold T1-weighted spoiled gradient-echo (SGE), and breath-hold gadolinium-enhanced T1-weighted SGE with and without fat-suppression sequences. The study represents a collective experience using a generalized combined abdominal-pelvic imaging protocol. Of 29 patients, 27 had surgical, endoscopic, microbiological, and/or histopathological correlation, and 2 had a diagnosis based on characteristic imaging findings. Fifteen patients had neoplastic disease including colon adenocarcinoma (n = 11), rectosigmoid carcinoid (n = 1), familial adenomatous polyposis (n = 2), and cecal lipoma (n = 1). Fourteen patients had non-neoplastic disease including diverticulosis (n = 6), ischemic colitis (n = 2), pseudomembranous colitis (n = 2), acute appendicitis with periappendiceal abscess (n = 2), Mycobacterium avium intracellulare (MAI) colitis (n = 1), and Crohn's proctocolitis (n = 1). In all 15 patients with neoplastic diseases, MR imaging depicted the primary lesions and demonstrated local extent. Mass lesions were best shown on T2-weighted HASTE and gadolinium-enhanced fat-suppressed SGE images. Of 14 patients with non-neoplastic diseases, inflammatory changes were best shown on gadolinium-enhanced fat-suppressed T1-weighted SGE images in all cases. MR imaging with fast scanning breath-hold techniques and intravenous gadolinium enhancement provided good depiction and characterization of large bowel diseases.
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Affiliation(s)
- J J Chung
- Department of Radiology, University of North Carolina, Chapel Hill 27599-7510, USA
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Scheidler J, Reiser MF. MRI of the female and male pelvis: current and future applications of contrast enhancement. Eur J Radiol 2000; 34:220-8. [PMID: 10927163 DOI: 10.1016/s0720-048x(00)00201-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Magnetic resonance imaging (MRI) of the pelvis has proven to be a most valuable diagnostic tool to examine pathologies of various organ systems in the pelvis. For most conditions MRI was found to be superior to other imaging modalities, like ultrasound and computed tomography. Controversy still exists on the value of intraluminal and intravenous contrast enhancement. This article gives an overview on currently available intraluminal and intravenous contrast agents. The techniques and results for contrast-enhanced MRI in the female and male pelvis are discussed based on a review of the literature. New developments and upcoming techniques, such as lymph node specific contrast agents and breathhold volumetric MRI, are described and initial results are presented.
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Affiliation(s)
- J Scheidler
- Department of Diagnostic Radiology, Klinikum Grosshadern, Ludwig-Maximilians-University, D-81366, Munich, Germany.
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