T4b TNM Finding

**Semantic type:** Finding

**Definition:** A general term that refers to a TNM finding of a primary tumor with direct invasion of adjacent structures. The definition of T4b TNM finding depends on the specific type of cancer that it refers to; for example, for bladder cancer it refers to a primary tumor that invades the pelvic wall and abdominal wall; for gastric cancer it refers to a primary tumor that invades adjacent structures; for colorectal cancer it refers to a primary tumor with direct invasion or adherence to other organs or structures.

**Synonyms:** - T4b - T4b - T4b Primary Tumor Finding - T4b Stage Finding - T4b Tumor Finding