case_images: PMC9989300_01
case_images: Gastrointestinal imaging shows duodenal stasis.
case_images: fsurg-10-1108225-g001.jpg
case_images: PMC9989300_01_fsurg-10-1108225-g001.jpg
case_images: F1
case_images: Gastrointestinal imaging revealed a duodenal stasis (Figure 1).
case_images: CT revealed a soft-tissue density mass about 5.4 cm*3.2 cm*5.8 cm (arrow), showing inhomogeneous density with ill-defined margin, and having a non-enhancing necrotic area with poor demarcation from the surrounding intestine (A) axial view, (B) coronal view, (C) sagittal view.
case_images: fsurg-10-1108225-g002.jpg
case_images: PMC9989300_01_fsurg-10-1108225-g002.jpg
case_images: F2
case_images: Enhanced computed tomography revealed a soft-tissue density mass about 5.4 cm*3.2 cm*5.8 cm (Figure 2, arrow), showing inhomogeneous density with ill-defined margin, and having a non-enhancing necrotic area with poor demarcation from the surrounding intestine.
case_images: The tumor was composed of spindle cells (A, HE X100). Immunohistochemistry showed the spindle cells were positive for beta-catenin (B, X100) and Desmin (C, X100), negative for CD34 (D, X100), S-100 (E, X100), SMA (F, X100).
case_images: fsurg-10-1108225-g003.jpg
case_images: PMC9989300_01_fsurg-10-1108225-g003.jpg
case_images: F3
case_images: Microscopic analysis identified that the tumour was composed of spindle-shaped fibroblasts (Figure 3A), and pathological diagnosis indicated aggressive fibromatosis. The following immunohistochemical results were observed: CD34 (-), CD117 (-), Desmin (+), DOG-1 (-), Actin (-), Ki67 (+5%), H-cald (-), STAT6 (plasma +), S100 (-), SMA (-), VEGF (-), beta-catenin (+), ALK (-), CD68 (-), Vimentin (+), CKpan (-), ER (+10%), PR (+30%) (Figures 3B-F).