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Occult Non-Small Cell Lung Carcinoma
Definition 1
A non-small cell lung carcinoma detectable by sputum cytology only. The primary tumor is undetectable radiographically or during bronchoscopy; therefore, it can not be assessed. (NCI Thesaurus)
Definition 2
Cancer cells are found in sputum (mucus coughed up from the lungs), but no tumor can be found in the lung by imaging tests or bronchoscopy, or the tumor is too small to be checked. (NCI Dictionary)
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