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Case Reports in Pulmonology
Volume 2016, Article ID 7869476, 4 pages
http://dx.doi.org/10.1155/2016/7869476
Case Report

Mediastinal Mature Teratoma Revealed by Empyema

1Avicenne University Hospital, Pulmonary Unit, International University of Rabat, Mfadel Charkaoui Street, BP 6527, Rabat, Morocco
2Avicenne University Hospital, Anatomopathology Unit, International University of Rabat, Mfadel Charkaoui Street, BP 6527, Rabat, Morocco
3Avicenne University Hospital, Radiology Unit, International University of Rabat, Mfadel Charkaoui Street, BP 6527, Rabat, Morocco

Received 13 October 2015; Accepted 28 March 2016

Academic Editor: Chih-Yen Tu

Copyright © 2016 Mohammed Raoufi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Teratomas are germ cell tumors, manifested with a great variety of clinical features; the most common extragonadal site is the anterior mediastinum. In this case, we report the patient with a large mature mediastinal teratoma with several components of ectodermal and endothermal epithelium. A 24-year-old female patient presented with history of persistent chest pain and progressively aggravating dyspnea for the previous 3 months. A chest X-ray showed a large opacity of the entire left hemithorax. Transcutaneous needle aspiration revealed a purulent fluid. The tube thoracostomy was introduced and the effusion was evacuated. Some weeks later, patient was seen in emergency for persistent cough and lateral chest pain. CT scan revealed a mass of the left hemithorax. The mass showed heterogeneous density, without compressing mediastinum great vessels and left hilar structures. Lipase value was elevated in needle aspiration. The patient underwent a total resection of the mediastinum mass via a left posterolateral thoracotomy. Microscopy revealed a mature teratoma with cystic structures. The patient subsequently made a full recovery. This case provide benign mediastinal teratoma with total atelectasis of left lung and elevated lipase value in needle transcutaneous aspiration; this event is explained by pancreatic component in the cystic tumor. Total removal of the tumor is adequate treatment for this type of teratoma and the prognosis is excellent.