title: Pustular vasculitis with clinical feature of pustular psoriasis and sternoclavicular hyperostosis.
abstract: We report the case of a 51-year-old Japanese man with a unique pustulosis. He had multiple erythematous plaques and numerous pinpoint pustules on the trunk and extremities resembling pustular psoriasis. Histologic features revealed a fully developed intraepidermal abscess filled with neutrophils and disrupted epidermal keratinocytes. Mild leukocytosclastic vasculitis was seen in the underlying dermis. A direct immunofluorescence study revealed IgM, Clq, C3 and fibrinogen deposits in the dermal vessels. The patient had also sternoclavicular hyperostosis. We think that this represents a unique type of pustular vasculitis distinct from pustular psoriasis.
authors.affiliation: Department of Dermatology, Jichi Medical School, Tochigi, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Demitsu
authors.forename: S
authors.initials: S
authors.lastname: Ishiharajima
authors.forename: T
authors.initials: T
authors.lastname: Miyamoto
authors.forename: A
authors.initials: A
authors.lastname: Kosuge
authors.forename: K
authors.initials: K
authors.lastname: Usui
authors.forename: T
authors.initials: T
authors.lastname: Kano
authors.forename: M
authors.initials: M
authors.lastname: Suzuki
authors.forename: Y
authors.initials: Y
authors.lastname: Kitajima
authors.forename: H
authors.initials: H
authors.lastname: Yaoita
mesh_terms: D003937:Diagnosis, Differential; D004912:Erythrocytes / Q000473:pathology; D006801:Humans; D015218:Hyperostosis, Sternocostoclavicular / Q000473:pathology*; D015603:Keratinocytes / Q000473:pathology; D008214:Lymphocytes / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009504:Neutrophils / Q000473:pathology; D011565:Psoriasis / Q000473:pathology*; D017445:Skin Diseases, Vascular / Q000473:pathology*; D014657:Vasculitis / Q000473:pathology*