title: IgG type multiple myeloma and concurrent IgA type monoclonal gammopathy of undetermined significance complicated by necrotizing skin ulcers due to type I cryoglobulinemia.
abstract: A 61-year-old male who worked as a frozen chicken processor was referred to us with necrotizing skin ulcers on his hands and feet. Serum IgG and IgA levels were 4,355 mg/dl and 605 mg/dl, respectively. Serum immunoelectrophoresis demonstrated M-bows for anti-IgGlambda and anti-IgAkappa. Bone marrow aspirate revealed approximately 31% atypical plasma cells. Cryoglobulin was identified in his serum. Cryoglobulin immunoelectrophoresis revealed monoclonal IgGlambda paraproteins. The diagnosis was IgGlambda type multiple myeloma and concurrent IgAkappa type monoclonal gammopathy of undetermined significance with type I cryoglobulinemia. A skin biopsy taken from an involved site showed amorphous eosinophilic material occluding small vessel lumens. There was a good response after one cycle of chemotherapy consisting of vincristine, adriamycin and dexamethasone (VAD). There was a concurrent decrease in serum cryoglobulin levels ; this was associated with re-epithelialization of skin ulcers. Two years later, multiple myeloma progressed during a maintenance therapy of melphalan and prednisolone. Treatment with bortezomib following VAD resulted in a transient response. Serum IgG levels increased to 7,200 mg/dl, in contrast to a decrease in IgA levels to 7 mg/dl. The increase corresponded with the reappearance of skin ulcers. Shortly thereafter, the patient died of multiple myeloma.
authors.affiliation: First Department of Internal Medicine, Gifu University Graduate School of Medicine.
authors.forename: Soranobu
authors.initials: S
authors.lastname: Ninomiya
authors.forename: Kenji
authors.initials: K
authors.lastname: Fukuno
authors.forename: Nobuhiro
authors.initials: N
authors.lastname: Kanemura
authors.forename: Naoe
authors.initials: N
authors.lastname: Goto
authors.forename: Senji
authors.initials: S
authors.lastname: Kasahara
authors.forename: Toshiki
authors.initials: T
authors.lastname: Yamada
authors.forename: Hisashi
authors.initials: H
authors.lastname: Tsurumi
authors.forename: Hisataka
authors.initials: H
authors.lastname: Moriwaki
mesh_terms: D003449:Cryoglobulinemia; D006801:Humans; D008297:Male; D008875:Middle Aged; D008998:Monoclonal Gammopathy of Undetermined Significance / Q000150:complications*; D009101:Multiple Myeloma / Q000188:drug therapy*; D010950:Plasma Cells; D012883:Skin Ulcer / Q000209:etiology*