A Case of Glomeruloid Hemangioma in a Patient with Multicentric Castleman's Disease

Glomeruloid hemangioma is a histologically distinctive cutaneous angioma which is rarely de-scribed in patients with POEMS (polyneuropathy, organomegaly, endocrinopathy, M-protein, and skin changes) syndrome and multicentric Castleman's disease. We report an additional case of glomeruloid hemangioma in a 30-year-old Korean woman with multicentric Castleman's disease showing features of POEMS syndrome. Histopathology revealed multiple dermal dilated vascular spaces composed of a conglomerate of capillaries, resulting in structures reminiscent of renal glomeruli. Periodic acid-Schiff-positive and diastase-resistant eosinophilic globules were found within the cytoplasm of vacuolated endothelial cells. The endothelial cells lining the capillary loops showed positive immunostaining for factor VIII-related antigen and CD31.