Fig. 3
From: A rare case of neonatal colonic obstruction caused by a solitary intestinal tumor
Hematoxylin and eosin staining. a Tumor cells were proliferating in the submucosal to muscular layers in a generalized manner. The mucosa was also infiltrated by tumor cells and the luminal surface was ulcerated (black arrow). There was partial calcification near the serous layer (white arrow). b Strongly enlarged and multiple spindle-shaped cells were observed (black arrow)