Sections reveal focally ulcerated gastric mucosal fragments infiltrated by an invasive poorly differentiated adenocarcinoma. The tumor is composed of crowded poorly formed glands, ill-defined groups and sheets of malignant epithelial cells demonstrating nuclear enlargement, hyperchromasia, pleomorphism, and prominent nucleoli with active mitosis. These neoplastic structures are set within a desmoplastic background.
Gastric mass.
Soft tissue fragments collectively measured 1.2 cm, totally embedded.
Gastric mass, endoscopic biopsy :