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  • Title: Patterns of mediastinal tumors operated at the Tikur Anbessa Hospital, Addis Ababa, Ethiopia over a six years period.
    Author: Bekele A, Ali A, Gulilat D, Kassa S, Nega B.
    Journal: Ethiop Med J; 2013 Apr; 51(2):143-52. PubMed ID: 24079158.
    Abstract:
    BACKGROUND: The mediastinum is the space that lies between the two pleural cavities containing many vital structures in it. When tumors or cysts arise in the mediastinum they can be either asymptomatic or present as space occupying lesions causing symptoms and signs by their effect on the neighboring organs. Though mediastinal tumors are routinely treated at the study center, there are no studies in Ethiopia concerning the patterns, and modes of treatments of Mediastinal space occupying lesions. OBJECTIVE: To review all the primary mediastinal tumors and cysts operated upon at the Tikur Anbessa Teaching Hospital, Addis Ababa University over a six year period, from August 2005-2011. METHODOLOGY: Clinical retrospective review. RESULTS: In the six years, 73 patients were operated, 49 (67.1%) were males, the and male to female ratio being 2.04:1. The mean age of patients was 35.9 +/- 10.5 years (range 14 to 74). Forty-five (61.6%) had lesions of the anterior mediastinum, 23 (31.5%) in the posterior mediastinum and 5 (6.8%) in the middle. The commonest anterior mediastinal tumors were thymic origin (24/45), and thymic lesions were found more common in females (17:7 ratio). From the 23 patients with posterior mediastinal tumors, 18 had benign neurogenic tumors (4 of which were dumbbell tumors). Chest pain and shortness of breath (dyspnea) were the two most common symptoms in 31 (42.4%) of the patients. Twenty three patients (31.5%) were asymptomatic, and all had benign lesions. None of the malignant lesions were asymptomatic. Eleven (15%) patients; eight with anterior and three with posterior mediastinal masses, had undergone pre-operative tissue diagnosis procedure by image guided FNAC. Fifty-nine (80.8%) patients were operated with intent of therapeutic surgical procedures. There were 28 (38.5%) midline sternotomies, 40 (54.7%) thoracotomies, four underwent a left sided mediastinotomies and one mediastinoscopy performed. The rate of malignancy in this study was 24 (32.8%), of which 19 (79.1%) were in the anterior compartment. A total of 13 (17.8%) patients had complications in the hospital and four (5.4%) of the patients died CONCLUSION: Primary mediastinal tumors are not so rare in the setting. We would also like to recommend further large scale prospective studies which also included long-term outcome so that we can further understand the situation in the country.
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