title: Colloid milium arising on a non-sun-exposed area in an adult.
abstract: 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.
authors.affiliation: Davies Campbell de Lambert Pathology, Rhodes, New South Wales, Australia. shusanlim@gmail.com
authors.forename: Cathy
authors.initials: C
authors.lastname: Lim
authors.forename: Michael
authors.initials: M
authors.lastname: Li
mesh_terms: 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