case_images: PMC6537017_01
case_images: CT coronal section of the abdomen and pelvis showing a well-defined solid-cystic mass along lesser curvature of the stomach.
case_images: CRIONM2019-2870302.001.jpg
case_images: PMC6537017_01_CRIONM2019-2870302.001.jpg
case_images: fig1
case_images: On computed tomography (CT) of the abdomen and pelvis (Figure 1), a 9 cm x 11 cm x 10 cm (anteroposteriorxcraniocaudalxtransverse) well-defined exophytic mixed solid-cystic mass was located along the lesser curvature of the stomach bulging into the superior and inferior recesses of the lesser sac.
case_images: Gastroscopy showing mucosal bulge along the lesser curvature.
case_images: CRIONM2019-2870302.002.jpg
case_images: PMC6537017_01_CRIONM2019-2870302.002.jpg
case_images: fig2
case_images: Upper gastrointestinal endoscopy showed a mucosal bulge along the lesser curvature of the body of the stomach and proximal antrum (Figure 2).
case_images: Surgical specimen shows the stomach with tumour.
case_images: CRIONM2019-2870302.003.jpg
case_images: PMC6537017_01_CRIONM2019-2870302.003.jpg
case_images: fig3
case_images: She underwent total gastrectomy with end-to-side esophagojejunal stapled anastomosis and feeding jejunostomy on 07/04/17 (surgical specimen is seen in Figure 3).
case_images: Histopathological images. (a) Hematoxylin and eosin (H&E) 200x magnification. Photomicrograph shows diffuse sheets of tumour cells. (b) H&E 400x uniform cells with round nuclei; small nucleoli with scant-to-moderate clear cytoplasm. (c) Immunohistochemistry (IHC) staining for CD99 shows crisp cytoplasmic membrane staining. (d) IHC for FLI-1 shows moderate nuclear staining in the tumour cells.
case_images: CRIONM2019-2870302.004.jpg
case_images: PMC6537017_01_CRIONM2019-2870302.004.jpg
case_images: fig4
case_images: Hematoxylin and eosin staining showed characteristic uniform cells with the round nuclei, small nucleoli with scant-to-moderate clear cytoplasm (Figures 4(a) and 4(b)). On immunohistochemistry, the tumour cells were diffusely positive for CD99 (Figure 4(c)). FLI-1 was positive on immunohistochemistry (Figure 4(d)).