Occult Lung Large Cell Carcinoma

**Semantic type:** Neoplastic Process

**Definition:** A large cell lung carcinoma detectable by sputum cytology only. The primary tumor is undetectable radiographically or during bronchoscopy; therefore, it can not be assessed.

**Synonyms:** - Occult Large Cell Carcinoma of Lung - Occult Large Cell Carcinoma of the Lung - Occult Large Cell Lung Carcinoma