Skip to main content
. 2022 Mar 28;16(1):159–164. doi: 10.1159/000522411

Fig. 3.

Fig. 3

Microscopic analysis of the tumor specimen. a Hematoxylin and eosin staining showing a proliferation of spindle-shaped tumor cells in the submucosa (original magnification, ×2). b Hematoxylin and eosin staining showing the spindle-shaped tumor cells at a higher magnification (original magnification, ×400). c Immunohistochemical examination revealed D2-40 positivity in the tumor cells (original magnification, ×400). d Immunohistochemical examination revealed aSMA positivity in the tumor cells (original magnification, ×400). e–w Immunohistochemical examination revealed c-kit, discovered on GISTs, desmin, S100, Melan-A, signal transducer and transactivator 6, insulinoma-associated protein 1, CXCL13, ETS transcription factor, follicular dendritic cell, anaplastic lymphoma kinase, CD1a, 10, 21, 23, 31, 34, 68, and 163 negatively in the tumor cells (original magnification, ×400). × Approximately, 1–2% of the tumor cell nuclei expressed Ki-67 (original magnification, ×400). GIST, gastrointestinal storomal tumor.