Background: Lung cancer remains the most common cause of premature mortality in men in developing countries. This study was aimed to evaluate the type and etiological factors of lung cancer in patients presented to a tertiary care hospital of central Kerala.Methods: A retrospective descriptive study was conducted in patients who were diagnosed as lung cancer. The medical records of such patients were reviewed. The data such as age, gender, etiological risk factors and type of lung cancer were collected. Patients with incomplete reports or repeated tests, or histopathological findings were negative for lung cancers were excluded from the study.Results: Total 228 patients were included in the study with age of 64.71± 9.75. The male (198) and female (30) ratio was 6.6:1, indicated the male dominance. Among the histological types, the squamous cell carcinoma was 29% (68/228) found as the most prevalent type which is followed by adenocarcinoma 26 % (61/228). The right side (132/228) lobe was the major segment than the left side (91/228). Similarly, incidence in the central region (128/228) was more than the peripheral region (69/228). Among the right side, the upper lobe was dominant when compared to the lower or middle lobe. The lower left lobe incidence was found in 47/228 cases. Among the total, 188 cases were tobacco smokers while the remaining were nonsmokers.Conclusions: Squamous cell carcinoma with right side upper lobe of lung was prevalent among the lung cancer cases. Tobacco smoking was found to be the major etiological factor.
Background: Bronchogenic carcinoma with spread along the mucosal plane presents as an exophytic mass. Most of the submucosal and peribronchial patterns of this malignancy are harder to detect by standard diagnostic procedures such as bronchial washing, brushing and forceps biopsy. We sought to investigate the utility of transbronchial needle aspiration (TBNA) in the diagnosis of bronchogenic carcinoma without intraluminal mass, through prospective analysis of routine diagnostic bronchoscopies performed in a 24-month period, at a tertiary care hospital.Methods: Patients with suspected bronchogenic carcinoma (clinical and radiological) underwent standard computed tomography (CT) of thorax. Further the patients were subjected to conventional TBNA, singly, and in combination with bronchial washings and brushings. The results were analyzed statistically for the diagnostic yield of TBNA.Results: Among the 42 patients assessed, 29 had malignancy confirmed by forceps biopsy or CT guided Fine Needle aspiration cytology or biopsy and bronchoscopy. Among them, 17 cases were detected by a combination of the results of bronchial washing, brushing and TBNA. The individual sensitivities amounted to 3.4% (n=1), 51.72% (n=15) and 27.6% (n=8), respectively. There were no false positive results. Concerning different bronchoscopic sampling techniques, 9 cases were diagnosed solely by bronchial brushings and 2 cases by TBNA alone. No periprocedural complications were encountered.Conclusions: Value of bronchial brushing in the diagnosis of bronchogenic carcinoma without bronchoscopically visible intraluminal mass is above that of conventional TBNA. Addition of bronchial washings, to bronchial brushings and TBNA has an insignificant impact on the diagnosis.
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