pN1b TNM Finding

**Semantic type:** Finding

**Definition:** A pathologic regional lymph node TNM finding. The definition of pN1b finding depends on the particular type of cancer that it refers to; for example, for breast cancer, pN1b finding is defined as follows: cancer with metastasis in internal mammary lymph nodes with microscopic disease detected by sentinel lymph node dissection but not clinically apparent. (from AJCC 6th Ed.)

**Synonyms:** - pN1b - pN1b Lymph Node Finding - pN1b Node Finding - pN1b Regional Lymph Nodes Finding