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case_images: Preoperative computed tomography findings. (a), (b) axial views and (c) coronal view, showing a small bowel tumor (Black star in (b)), encompassing a necrotic region, and exerting pressure on the inferior vena cava (Black arrow in (b)) and the adjacent ascending colon (White circle in (b)).
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case_images: A thoraco-abdominal CT scan, revealed a 12*11*7 cm heterogeneous small bowel tumor, encompassing a necrotic region, and exerting pressure on the inferior vena cava and the adjacent ascending colon (Fig. 1).
case_images: Intraoperative findings. (a) Illustration of the intraoperative findings. A locally advanced jejunal tumor contracting anr ileal loop positioned 2.5 m distal to the duodeno-jejunal flexure, and the ascending colon (Black transparent polygon). Surgical resection limits are highlighted with dashed lines. (b) Anterior view of the surgical specimen with the tumor highlighted with a white star. (c) Posterior view of the surgical specimen showing the tumor (White star) emerging from a jejunal loop (White arrow) and contracting an ileal loop (Yellow arrowhead) and the ascending colon. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
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case_images: Given these findings, a monobloc oncological resection was executed, involving the removal of 15 cm of jejunum, 20 cm of ileum, and the ascending colon (Fig. 2).
case_images: Histopathological findings of the jejunal stromal tumor. (a) Spindle cell GIST with closely packed elongated cells arranged in short intersecting fascicles (HEx200). (b) Elongated cells with blunt-ended cigar-shaped nuclei (HEx400). (c) CD117 (c-Kit) immunohistochemistry shows diffuse positivity. (d) Dog1 immunohistochemistry shows diffuse positivity.
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case_images: Immunohistochemistry demonstrated diffuse positivity for CD 117 and Dog 1 (Fig. 3).