CALCIFICATION of the external ear (pinna) is a relatively rare manifestation of a systemic disease not associated with abnormal calcium metabolism, indeed of any systemic disease. The finding is best known in Addison's disease, yet in this condition it occurs in only a small proportion of cases. Soff er, Dorf man, and Gabrilove, in their series of 55 patients with Addison's disease collected over a 25-year period, encountered only 2 patients with calcification of the external ears. Jarvis and his group found calcification of the pinnae in 6 patients out of 120 with Addison's disease. Calcified ear cartilages have also been observed in the following systemic conditions: ochronosis, acromegaly, hypertension, diabetes mellitus, and hyperthyroidism.
It is the purpose of this note to demonstrate that, in addition to Addison's disease, diabetes, and other diseases mentioned, calcification of the external ear can occur in 2 uncommon systemic diseases—von Meyenburg's disease (systemic chondromalacia)
McKusick VA, Goodman RM. Pinnal Calcification: Observations in Systemic Diseases Not Associated with Disordered Calcium Metabolism. JAMA. 1962;179(3):230–232. doi:10.1001/jama.1962.03050030044012c
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