case_images: PMC6319677_01
case_images: (a, b) Axial and coronal CT scan slices showing invagination of proximal portion of duodenum into distal (white arrows). CT, computed tomography.
case_images: fig-1.jpg
case_images: PMC6319677_01_fig-1.jpg
case_images: f1
case_images: 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).
case_images: Gross pathology specimen with dissection of duodenum revealing a submucosal leiomyoma (white arrow) measuring 7 x 6 x 3.5 cm.
case_images: fig-2.jpg
case_images: PMC6319677_01_fig-2.jpg
case_images: f2
case_images: The specimen was removed and gross pathology revealed a 7 x 6 x 3.5-cm duodenal submucosal leiomyoma (Fig. 2).
case_images: 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.
case_images: fig-3.jpg
case_images: PMC6319677_01_fig-3.jpg
case_images: f3
case_images: The mass stained positive for actin and desmin and negative for DOG-1, S100, SD34, and ALK-1 (Fig. 3).