Macular arteritis mimicking pigmented purpuric dermatosis in a 6-year-old caucasian girl.
A 6-year-old Caucasian girl presented with a 4-month history of a mildly pruritic, brown and pink, focally petechial macules on the posterior aspect of her left leg, clinically consistent with a pigmented purpuric dermatosis. Biopsy, however, revealed lymphocytic inflammation with occlusion of the lumen of a small artery at the dermal-subcutaneous junction, characteristic of macular arteritis. This is a recently described entity that is not known to be associated with systemic disease, and remains stable over years without treatment. So far, it has not been reported in a Caucasian patient. We review the clinical and histologic features, as well as the laboratory evaluation of this case, and the previously reported cases.
Buckthal-McCuin
Jill
J
Department of Dermatology, University of Cincinnati, Cincinnati, Ohio 45267-0592, USA.
Mutasim
Diya F
DF
D001167:Arteritis / Q000473:pathology*; D001706:Biopsy; D002648:Child; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D017495:Hyperpigmentation / Q000473:pathology*; D011537:Pruritus / Q000473:pathology; D012871:Skin Diseases / Q000473:pathology*; D044465:White People