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The actinomycosis is a suppurative infection due to an anaerobic and microaerophillic bacteria called actinomyces. Only few case reports are described for the mediastinal locations of this rare entity. We report a new case of inflammatory pseudotumor in the mediastinum due to Aggregatibacte actinomycetemcomitans revealed by hemoptysis. The mediastinoscopy procedure with biopsy was needed to confirm the definitive bacteriological diagnosis by a positive culture. During the postoperative course, a cutaneous fistula was found which had a favourable evolution after appropriate antibiotherapy. Through this case report, the authors insist upon the importance of considering the diagnosis of mediastinal actinomycosis when facing non-specfic mediastinal mass symptoms and also about the interest of systematic bacterioscopic examination and histopathologic examination on nodes' biopsies to avoid to be lost on pathology of mediastinal tumor or tuberculosis. In practise, we caution the non-expert during biopsies because of this lesion's invasive characteristic especially in the confined space of the mediastinum., (Copyright © 2016 Elsevier Masson SAS. All rights reserved.)

The pseudosyndrome of Meigs is caracterised by a triad, which associates a solid benign tumor of the ovary, an ascitis and a pleural effusion. Surgical extraction of the tumor entails disappearance of the symptomatology. The authors report in this study a case of an ovarian goitre revealed by this syndrom., (Copyright © 2014. Published by Elsevier SAS.)