Objective: The aim of present study was to determine the role of fine needle aspiration cytology (FNAC) in diagnosis of Lungs tumor and its diagnostic accuracy as well as evaluate the incidence and prevalence of lung cancer in various age and sex group and in relation with smoking.

Materials and Method: A total of 72 patients Referred to our department for USG guided FNAC with suspected Lung mass lesion admitted through medical, surgical OPD and emergency. After detailed medical and surgical history, clinical examination was done, Routine investigations (CBC, BT, CT, PT and aPTT) were done before the procedure. Recent Plain and contrast CT of chest made available prior to USG guided FNAC. Written consent was taken from each patient. FNAC was done and five to seven smears were prepared, fixed and stained with May-Grunewald Giemsa stain/papanicolaou, and H&E stain.

Results: Out of 72 patients, 64 patients (88.89%) were male and 8(11.11%) patients were female. Male to female ratio was 8:1. The age of patients varies from 25-75 years most of the patient was in the age group of 50-70 years. The most common tumor was squamous cell carcinoma in 33(45.83%) patients followed by adenocarcinoma in 16 patients (22.22%), small cell carcinoma in 13 patients (18.05%) and large cell carcinoma in 5 patients (6.94%). 57 patients (79.16%) out of 72 patients had history of smoking.

Conclusion: USG Guided Fine Needle Aspiration cytology is a simple, safe, highly sensitive and specific procedure with high diagnostic accuracy for diagnosis of Lungs mass lesions. Diagnostic accuracy of cytology with final histopathological report was established with accuracy rate of 94.44%.

Keywords: Fine needle aspiration cytology, Lung tumor, diagnostic accuracy.

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Dr Awadhesh Kumar Singh

Assistant Professor, Department of Pathology, S.K. Medical College, Muzaffarpur, India