Colloid milium arising on a non-sun-exposed area in an adult.
A 59-year-old woman presented with multiple translucent papules on the inner surface of the tragus of the right ear. Initially they were treated with cryotherapy, with a later biopsy revealing the diagnosis of colloid milium. The histology was unusual for adult colloid milium as the lesion lacked a Grenz zone and evidence of solar elastosis. This together with a lack of aetiological factors made it difficult to classify the subtype of colloid milium.
Lim
Cathy
C
Davies Campbell de Lambert Pathology, Rhodes, New South Wales, Australia. shusanlim@gmail.com
Li
Michael
M
D003872:Dermatitis / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D003937:Diagnosis, Differential; D004431:Ear, External / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010787:Photosensitivity Disorders / Q000175:diagnosis* / Q000209:etiology / Q000473:pathology; D013472:Sunlight