Gastric Poorly Cohesive Adenocarcinoma

**Semantic type:** Neoplastic Process

**Definition:** An adenocarcinoma that arises from the gastric mucosa and is characterized by the presence of isolated malignant cells or malignant cells that form small aggregates. This category includes signet ring cell adenocarcinomas, adenocarcinomas that are composed of malignant cells resembling lymphocytes and histiocytes, and adenocarcinomas that are composed of malignant cells with deeply eosinophilic cytoplasm.

**Synonyms:** - Gastric Poorly Cohesive Carcinoma - Poorly Cohesive Gastric Adenocarcinoma - Poorly Cohesive Gastric Carcinoma