Sclerosing Pneumocytoma

**Semantic type:** Neoplastic Process

**Definition:** A benign tumor that arises from the lung. It is characterized by the presence of sclerotic, papillary, solid, and hemorrhagic patterns and hyperplastic type II pneumocytes. Cholesterol clefts, hemosiderin deposition, chronic inflammation, and calcifications may be present. In the majority of cases, it is a solitary and peripheral tumor. Patients are usually asymptomatic.

**Synonyms:** - Lung Sclerosing Angioma - Lung Sclerosing Hemangioma - Pneumocytoma - Sclerosing Angioma of Lung - Sclerosing Angioma of the Lung - Sclerosing Hemangioma of Lung - Sclerosing Hemangioma of the Lung