PD-L1 Positive

**Semantic type:** Laboratory or Test Result

**Definition:** An immunohistochemical test result that indicates expression of PD-L1 in a tissue sample of a primary or metastatic malignant neoplasm.

**Synonyms:** - B7 Homolog 1 Positive - B7-H Positive - B7H1 Positive - CD274 Antigen Positive - CD274 Molecule Positive - CD274 Positive - Expression of PD-L1 - PD-L1+ - PDCD1L1 Positive - PDCD1LG1 Positive - PDL1 Positive - Positive - Programmed Cell Death 1 Ligand 1 Positive