title: Letter: In situ lung carcinoma.
mesh_terms: D002278:Carcinoma in Situ / Q000175:diagnosis*; D002283:Carcinoma, Bronchogenic / Q000175:diagnosis*; D003581:Cytodiagnosis; D003937:Diagnosis, Differential; D003951:Diagnostic Errors; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis*; D009362:Neoplasm Metastasis