Parotid Gland Carcinoma ex Pleomorphic Adenoma

**Semantic type:** Neoplastic Process

**Definition:** A carcinoma that arises from a pleomorphic adenoma in the parotid gland. Patients usually present with a history of a long-standing tumor mass which grew rapidly in the past few months. Patients with non-invasive or minimally invasive carcinoma have an excellent prognosis. In cases where there is invasion of the surrounding tissues, the clinical course is aggressive.

**Synonyms:** - Carcinoma ex Pleomorphic Adenoma of Parotid - Carcinoma ex Pleomorphic Adenoma of Parotid Gland - Carcinoma ex Pleomorphic Adenoma of the Parotid - Carcinoma ex Pleomorphic Adenoma of the Parotid Gland - Parotid Carcinoma ex Pleomorphic Adenoma