Role of CT scan in the evaluation of lung tumor with cytopathilogical correlation

Abstract

:Lung cancer is an important & widespread disease that contributes a major health problem worldwide. Lung cancer kills over 1 million people per year. Cigarette smoking is the major cause of lung cancer. CT scan is the principal radiological examination adjunct to X-Ray chest examination in diagnosis & management of lung cancer. The main Objective of the study was to assess the diagnostic usefulness of CT scan in evaluating & characterize the different types of lung tumors and to correlate CT findings of lung tumors with that of cytopathology. This study was carried out in the department of Radiology & Imaging, Dhaka medical college hospital, Dhaka during the period from 1st January 2007 to March 2008. It was a cross sectional study. Total 51 patients were selected conveniently, detailed history particularly symptoms related to lung tumors was carefully elicited to obtain maximum possible information regarding the illness. Possible diagnosis was established by the combination of history, physical examination, laboratory & radiological investigations. Then patients were underwent CT examination of lung. Cytopathological sample were obtained from the lesion by guided aspiration. Collected FNAC samples were send for cytopathology & collected reports were compared with CT scan reports. Sensitivity of CT to diagnose lung tumor was 97.4%, specificity 76.9% & accuracy 92.2 %.

Pulmonary Mass Lesions: CT Scan Diagnostic-Impressions and FNAC Diagnoses – A Correlative Study

“…Both lungs were involved in four cases (4.4%). These findings are comparable to the study by Hoque et al, where maximum number of masses were detected in right upper zone (25.5%), followed by 19.6% in left upper zone [10]. In the study by Rawat et al both lungs were found to be involved in 2.96% of cases [9].…”

“…The youngest patients was 40 years old (2 cases) and the oldest was aged 100 years. The age of the cases with pulmonary mass lesions seen in various other studies ranged from 40 to above 80 years [8][9][10][11][12]. Smoking is found to be associated with 81.1% of patients with lung masses in this study.…”

Clinical, radiological, laboratory and bronchoscopic features characterizing each type of bronchogenic carcinoma

“…Right lung predilection was reported in previous studies especially upper lobes. 2,3,15,17 The upper lobes susceptibility to lung cancer might be attributed to that the upper lobes are less vascular and more aerated than the lower ones, therefore it is more affected by smoking. 17 Lung masses was commonly detected in (50.0%, 46.2% and 40.6%) of our patients with SCLC, SCC and LCC respectively, while lung nodule was commonly detected in ADC (47.4 %) (p=0.06).…”

“…1 Cigarette smoking is the major cause of lung cancer; 95% of patients are smokers. 2 At presentation, 85% of the patients are symptomatic. 3 They may present with non-specific symptoms (e.g.…”

“…12 Transthoracic fine needle aspiration cytology (FNAC) is regarded as the most effective cytological methods for diagnosis of lung cancer, particularly peripherally located ones. 2 To our knowledge there are few studies that identify characteristics of each type of bronchogenic carcinoma. Therefore, the aim of this study is to analyse the clinical, radiological, laboratory and bronchoscopic findings characterizing each type.…”