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Mesenteric Desmoid Tumor: CT and MRI Findings, Image-Guided Biopsy, and Modern Treatment Strategies

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 Edited by ScholarGen MediAI Team Case Overview: An Intra-Abdominal Mass in a Woman in Her 30s An intra-abdominal soft-tissue mass can present a diagnostic challenge, particularly when it lies adjacent to the small bowel and colon. Gastrointestinal stromal tumor (GIST), lymphoma, neurogenic tumors, and other mesenchymal lesions may share overlapping imaging features. This case describes a woman in her 30s who underwent evaluation of an intra-abdominal mass. Contrast-enhanced computed tomography (CT) demonstrated a relatively homogeneous, rounded soft-tissue mass in the left abdomen, adjacent to small-bowel loops and the splenic flexure. Enhancement was mild, and no conspicuous lymphadenopathy, ascites, or hepatic lesions were identified. Dual-energy CT iodine maps demonstrated mild enhancement. Subsequent magnetic resonance imaging (MRI) showed intermediate T2 signal intensity, contrast enhancement, and diffusion restriction. Ultrasound-guided biopsy established the diagnosis of me...
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Perforated Sigmoid Colon With a Large Pelvic Abscess: CT Findings, Hinchey Stage II, and Diagnostic Pearls

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  Edited by ScholarGen MediAI Team Executive Answer Perforated sigmoid colon with a large pelvic abscess is a serious complication of colonic disease, most commonly associated with diverticulitis when severe sigmoid diverticulosis is present. Contrast-enhanced computed tomography (CT) is essential for identifying the perforation, defining the extent of the abscess, evaluating adjacent organs, and assessing for additional signs of peritonitis. In this case, CT demonstrated a large, peripherally enhancing gas-and-fluid collection in the central pelvis, marked distal sigmoid and rectal wall thickening, and a small volume of intraperitoneal free fluid. The absence of upper abdominal free air does not exclude a localized colonic perforation. The combination of a large pelvic abscess and suspected sigmoid perforation is consistent with complicated diverticulitis and a Hinchey stage II pattern. Why This Case Matters Colonic perforation can present without the classic imaging pattern of di...
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