Multiple miliary osteoma cutis: a comprehensive review and update of the literature.

Multiple miliary osteoma cutis consists of heterotopic foci of bone tissue in the dermis and subcutaneous tissue. Patients usually present with multiple, asymptomatic facial papules of several millimetres in diameter which cause distress regarding their cosmetic appearance. The condition is described as rare, as only a few cases have been reported since its first description in 1864 by Virchow. We therefore carried out a comprehensive literature search and review, in which 102 published cases were retrieved and analysed. The demographic and clinical aspects, as well as current therapy solutions, of this probably overlooked condition are discussed.