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. 2026 Oct 9;19(10):e273352. doi: 10.1136/bcr-2026-273352

Figure 2. Histopathological images of the primary tumour and gastrointestinal stromal tumour recurrence. (A) H&E-staining of the gastric primary tumour (100× magnification); (B) immunohistochemistry staining of the primary tumour for KIT (200×); (C) H&E-staining of the recurrent tumour (100×); and (D) immunohistochemistry staining of the recurrent tumour for KIT (100×). *Tumour tissue.

Histology and KIT immunohistochemistry of gastric GIST primary and recurrent tumours. H and E staining shows tumour tissue marked by asterisks, while KIT staining reveals strong positivity in primary but focal expression in recurrence.