[Pseudo-tumor of Castleman: particular aspects of thoracic localization. Two case reports].

The pseudo-tumours of Castleman, irrespective of whether their histological type is plasmocytic or hyalino-vascular, are most often found in the mediastino-pulmonary area. 2 rare aspects of their thoracic localisation are reported with the occurrence of a pleural effusion and the localisation to the chest wall itself.