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Bronchial Carcinoid Tumors:Clinical and Radiological Findings in 21 Patients

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Author(s): M. Bakhshayesh Karam | S. Zahirifard | M.O. Tahbaz | K. Kaynama | F. Tolou MD | H. Jabari Darjani

Journal: Iranian Journal of Radiology
ISSN 1735-1065

Volume: 2;
Issue: 3-4;
Start page: 111;
Date: 2005;
Original page

Keywords: bronchus | clinical | pathological | imaging

ABSTRACT
Background/Objectives: Bronchial carcinoid tumors are neoplasms that range from typical carcinoids to the more aggressive atypical ones with similar imaging features. Considering the low prevalence of the tumor, we reviewed 21 patients. Patients and Methods: In this retrospective observational study, we reviewed the clinical, pathological and imaging findings in 21 patients diagnosed with bronchial carcinoid tumors who were admitted to National Research Insti tute of Tuberculosis and Lung Disease (NRITLD) in a 6 years period. Plain radiography and CT scan of patients were reviewed. Results: 52.4% of the patients were male and 47.6 % female. The mean ag e of patients was 39.1 years. The most frequent clinical symptoms were cough (n= 15; 71.4%), hemoptysis (n=13; 61.9%), dyspnea (n=12; 57.1%), and pleuritic chest pain (n=7; 19%). Most of the lesions (68%) were in the right lung, 24% in the left lung, 8% in the trachea, and 19%were bilateral. Right upper lobe and right intermediate bronchus (24% an d 32%, respectively) were the most frequent sites of tumor. In radiologic examination, two cases (9.5%) had normal CXRs. Pulmonary collapse (52.4%) and mass (23.8%) were the most fr equent findings. Reviewi ng CT scans showed endobronchial lesion in three (15%) and mass in 11 (55%) patients. The mass was well defined in 8 cases (72%) and ill-defined in 3 (28%). Other findings were: mediastinal invasion (45%),atelectasis (55%), post obstructive pneumonitis (2 0%) and eccentric calcification (15%). Pathological examination revealed typical (n=18; 86% ) and atypical (n=3; 14%) carcinoid tumors. Conclusion: Although rare, bronchial carcinoid tumors should be considered a differential diagnosis in adult patients with cough, hemoptysis, dyspnea, and pleuritic chest pain. Chest xray and CT scan can help with diagnosis. Majo r imaging findings are central, round or ovoid well-defined mass, and obstruction signs like at electasis. Diagnosis and classification should be confirmed by pathological examination on sample taken by bronchos copy or surgery.
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