Figure 2. Macroscopic (A, B) and histopathological (C) photographs of the pyloric mass.

Macroscopic (A) and cross-sectional (B) photographs of the incised pyloroduodenal junction during surgical resection. Concentric thickened wall (asterisk) and firm intraluminal mass (arrow) are observed. Histology (C) of the resected lesion from the pyloric mass. Spindle cells are arranged in bundles and streams amid dense collagen bundles. Spindle cells have small amounts of eosinophilic cytoplasm and indistinct cell borders. Haematoxylin and eosin; scale bar = 50 μm