Secondary Malignant Neoplasm

**Semantic type:** Neoplastic Process

**Definition:** A malignant neoplasm that arises from a pre-existing lower grade lesion, or as a result of a primary lesion that has spread to secondary sites, or due to a complication of a cancer treatment.

**Synonyms:** - SMN - SMN - Secondary Cancer - Secondary Malignancy - Secondary Malignancy - Secondary Malignancy - Secondary Malignancy - Secondary Malignancy - Secondary Malignancy - Secondary Malignancy - Secondary malignant neoplasm of unspecified site - secondary cancer