Castleman’s Disease. Association with System Scleroderma

The article presents an observation of a rare benign lymphoproliferative disease — Castleman’s disease, with pronounced systemic symptoms. The clinical case is of interest not only for the rarity of pathology, but also for the peculiarities of clinical manifestations, including paraneoplastic pseudosclerodermic clinical and immunological syndrome, which was not previously described in the context of Castleman’s disease, Raynaud’s syndrome, severe pulmonary hypertension and a suspected (not proven morphologically) variant of extranodal lesion with its previously also notobserved localization in the sigmoid colon wall.