Gastrointestinal Stromal Tumor
Image Description
The cells in this lesion appear more plump and atypical compared to the previous case. GISTs are primarily graded based on size and mitotic rate, with tumors < 5 cm and having < 5 mitoses per 50 high-power fields having the lowest risk of progression. Cytoplasmic vacuoles are evident here, which are an artifact of fixation.