Based on gene expression patterns, we classified gastric cancers into 3 subtypes, and validated these in an independent set of tumors. The subgroups have differences in molecular and genetic features and response to therapy; this information might be used to select specific treatment approaches for patients with gastric cancer.

Highlights Co-existent abdominoperitoneal tuberculosis and endometrial cancer is a rare entity. To date, there have only been 2 case reports on the topic. We present 3 cases which highlight key challenges in diagnosis and management. Thorough surgical staging with frozen section analysis is key for accurate treatment. In endemic regions, we recommend a low threshold to suspect this entity.