Skip to main content
Fig. 2 | Diagnostic Pathology

Fig. 2

From: ALK expressed in a gastrointestinal stromal tumor harboring PDGFRA p. D842V mutation:a case report

Fig. 2

Gross and microscopic images of the GIST. This tumor possessed both cystic and solid components. The cystic cavity was filled with dark brown blood, and the solid areas were delicate in texture (a). Sections of the mass were observed under a microscope, and the tissue was characterized by epithelioid tumor cells that were arranged in a prominent nesting pattern (b, H&E stain, 100×). Images of epithelioid tumor cells stained by H&E under a high-power field are displayed in c (200×). The tumor cells exhibited a positive cytoplasmic signal for CD117 (d, IHC, 200×), DOG-1 (e, IHC, 200×) and SDHB (f, IHC, 200×), and they were negative for SMA (g, IHC, 200×). The Ki-67 labeling index was estimated to be 10% (h, IHC, 200×)

Back to article page