[Cystic lymphangioma of the mediastinum. (presentation of 5 personal cases) (author's transl)].

168 mediastinal masses, 4 of which were cystic lymphangiomas, were operated in the Thoracic Surgery Department of 1st Surgical Special Pathology. After an analysis of the frequently and the pathogenetic theories of this rare disease, the Authors, with the aid of clinical cases, illustrate the clinical procedures and instrumental semeiotics which may sometimes lead to suspicion of this pathology, with particular regard to Computerised Axial Tomography (C.A.T.).