Incidental finding of Castleman's disease in an asymptomatic young adult.

Castleman's disease (CD) is a rare lymphoproliferative disorder of unknown aetiology presenting with different clinical manifestations in young adults. There are two main types, unicentric occurring in a younger age group and multicentric occurring in older people. We report the case of 22-year-old man who initially presented with acute appendicitis. During his admission he had a routine chest radiograph which demonstrated a mass lesion, later diagnosed as Castleman's disease of hyaline vascular type. He underwent a right pneumonectomy for complete excision and made an unremarkable recovery.