Occult Lung Carcinoma

**Semantic type:** Neoplastic Process

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

**Synonyms:** - Occult Carcinoma of Lung - Occult Carcinoma of the Lung - Occult Lung Cancer