PMC6319677_01
(a, b) Axial and coronal CT scan slices showing invagination of proximal portion of duodenum into distal (white arrows). CT, computed tomography.
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A CT scan to evaluate the abdominal mass revealed focal dilation and thickening of the third portion of the duodenum (D3) with intussusception of D2 into D3 (Fig. 1).
Gross pathology specimen with dissection of duodenum revealing a submucosal leiomyoma (white arrow) measuring 7 x 6 x 3.5 cm.
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The specimen was removed and gross pathology revealed a 7 x 6 x 3.5-cm duodenal submucosal leiomyoma (Fig. 2).
H&E stain of pathological specimen. Analysis revealed mitotic figures less than 5 per 50 high-powered field. Specimen stained positive for actin and desmin, negative for DOG-1, S100, CD34, and ALK-1. H&E, hematoxylin and eosin.
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The mass stained positive for actin and desmin and negative for DOG-1, S100, SD34, and ALK-1 (Fig. 3).