case_images: PMC6606924_01
case_images: a,b: Abdominal CT indicated 5 cm, a smooth-marginated and inhomogeneous enhanced mass (white arrow). C: On PET-CT, FDG concentrated on the tumor, SUV max was 4.0. d: On MRI, the tumor showed low signal in T1-weighted images and enhanced signal in T2-weighted images.. Abbreviations: CT, computed tomography; FDG, fluorodeoxryglucose; MRI, magnetic resonance imaging; PET, Positron emission tomography; SUV, standardized uptake value.
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case_images: On magnetic resonance imaging (MRI), the tumor showed a low signal on T1-weighted images and an enhanced signal on T2-weighted images (Fig. 1).
case_images: a: The tumor was located at the jejunum 30 cm anal side from Treitz ligament. b: Hyperplasia of spindle cells in the muscularis propria of the small intestine. Immunohistochemical examination of the resected specimen showed that the tumor cells stained positive for alpha-smooth muscle actin and Calponin and negative for CD34, S-100, c-Kit, Desmin, ALK-1, DOG1, and Caldesmon stains. The Ki-67 labeling index was 3.0%. The final histopathological diagnosis was desmoid-type fibromatosis of the jejunum.
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case_images: The final histopathological diagnosis was desmoid-type fibromatosis (DF) of the jejunum (Fig. 2).
case_images: The patient's clinical course.. Abbreviations: AST, aspartate aminotransferase; ALT, alanine amino transferase; T-bil, total bilirubin; Hb, hemoglobin; Ht, hematocrit; PP, protoporphyrin in red blood cells; RBC, red blood cell count.
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case_images: His clinical course is summarized in Fig. 3.