Granulomatous and suppurative dermatitis at interferon alfa injection sites: report of 2 cases.
It has previously been reported that interferon alfa injection sites may develop pyoderma gangrenosum, interface dermatitis, vasculitis, or, more commonly, ulcers characterized by intravascular thrombi and a mixed inflammatory cell infiltrate. We describe 2 patients in whom granulomatous and suppurative dermatitis developed at interferon alfa injection sites. These cases extend the spectrum of interferon alfa injection site reactions. The histologic and clinical similarities of these cases with pyoderma gangrenosum and cutaneous Crohn's disease are explored.
Sanders
Scott
S
Department of Dermatology, New York Hospital, NY, USA.
Busam
Klaus
K
Tahan
Steven R
SR
Johnson
Richard A
RA
Sachs
Dana
D
D006099:Granuloma / Q000209:etiology* / Q000473:pathology; D006801:Humans; D007279:Injections, Subcutaneous / Q000009:adverse effects*; D016898:Interferon-alpha / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D012871:Skin Diseases / Q000209:etiology*; D013492:Suppuration / Q000209:etiology
D016898:Interferon-alpha