[Unusual thoracic localization of Castleman's tumor. Apropos of a case]

We report a case of angiolymphoid hyperplasia, or Castleman's pseudotumour, located in the chest and most unusually opposite an intercostal space. Pain led to the discovery of the tumour, the nature of which was discovered at surgery, and disappeared after surgical excision. No antigenic stimulus or local haemodynamic disturbance was found, which could have accounted for the very unusual intercostal site of the lesion.