Unknown Primary Tumor pN2a TNM Finding v8

**Semantic type:** Finding

**Definition:** Unknown primary tumor with metastasis in a single ipsilateral or contralateral cervical lymph node 3 cm or smaller in greatest dimension and ENE(+); or metastasis in a single ipsilateral cervical lymph node larger than 3 cm but not larger than 6 cm in greatest dimension and ENE(-). (from AJCC 8th Ed.)