title: FDG PET/CT depicts cutaneous plasmocytoma.
abstract: A 63-year-old man with a 1-year course of IgA-λ multiple myeloma (MM) and a history of autologous stem cell transplantation presented with multiple nontender, nodular violaceous skin lesions that were located predominantly on his trunk. Diagnostic workup using F-FDG PET/CT revealed disseminated disease including highly hypermetabolic (sub)cutaneous lesions, consistent with active manifestations of MM. Histopathology confirmed monoclonal, λ-restricted plasma cell infiltrates with a high proliferation index (Ki-67) of about 80%. Cutaneous manifestation of MM is an uncommon observation in clinical practice portending poor prognosis.
authors.affiliation: From the Departments of *Nuclear Medicine, and †Hematology and Oncology, Universitätsklinikum Würzburg, Würzburg, Germany.
authors.forename: Constantin
authors.initials: C
authors.lastname: Lapa
authors.forename: Stefan
authors.initials: S
authors.lastname: Knop
authors.forename: Katharina
authors.initials: K
authors.lastname: Lückerath
mesh_terms: D019788:Fluorodeoxyglucose F18; D006801:Humans; D008297:Male; D008875:Middle Aged; D064847:Multimodal Imaging; D009101:Multiple Myeloma / Q000000981:diagnostic imaging* / Q000473:pathology; D009361:Neoplasm Invasiveness / Q000000981:diagnostic imaging / Q000473:pathology; D010954:Plasmacytoma / Q000000981:diagnostic imaging* / Q000473:pathology; D049268:Positron-Emission Tomography; D019275:Radiopharmaceuticals; D012867:Skin / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed
chemical_list: D019275:Radiopharmaceuticals; D019788:Fluorodeoxyglucose F18