Castleman's disease combined with choledocholithiasis: a case report and review of literature.

: Castleman's disease (CD) is a rare lymphoproliferative disease with unclear pathogenesis. CD is divided into unicentric and multicentric according to clinical classification, and is usually successfully treated with surgical resection alone. CD is also classified into hyaline vascular, plasma cell, or mixed cell type according to histopathological type. CD can occur in any part of the lymphatic tissue, but most occur in mediastinal lymph node, followed by the neck, armpit, and abdominal lymph nodes. Here, we have reported a case of Castleman disease which was accidently discovered during the operation of common bile duct calculi. The histological presentation of the lymph nodes was corresponded to the plasma cell type of CD. To our knowledge, there is no report about the plasma cell type of Castleman's disease coexistence with common bile duct calculi. Finally we also review the literature.