Adenocarcinoma with Cartilaginous and Osseous Metaplasia

An invasive adenocarcinoma characterized by focal or extensive transformation of the malignant glandular cells to cells with abundant, usually granular eosinophilic…

An adenocarcinoma which has metastasized from an unknown primary anatomic site.

Compared to adenomas, adenocarcinomas show greater cytological atypia, increased frequency of mitoses, regional variation in growth pattern, more papillary structures, have size…

Malignant neoplasia of glandular epithelium composed of tubular and or villous structures penetrating beyond the muscularis mucosa. Tumors display varying degrees…

An adenocarcinoma that arises from and straddles the junction of the stomach and esophagus. The category of adenocarcinomas of the gastroesophageal…

Tumors with glandular components but distinct from any other adenocarcinoma. This subgroup can be used for temporary allocation of novel lesions. …