Giant lymph node hyperplasia in angiohamartomatous soft tissues.

The first case of Castleman's benign lymphoma associated with angiohamartomatous alterations in peripheral fibroadipose tissue is reported, and a pathogenetic connection is hypothesized. The lesion was encountered in a 48-year-old man; it was situated in the left and inferior retroperitoneal area with extension to the inguinal region of the same side.