Elastosis perforans serpiginosa most frequently involves the nape and sides of the neck, but has been described involving the face, trunk, and upper extremities. To our knowledge, these are the first two reported cases of elastosis perforans serpiginosa in which the pinna was affected.
Weidman AI, Allyn B. Elastosis Perforans SerpiginosaTwo Cases Involving the Ear. Arch Dermatol. 1971;103(3):324-327. doi:10.1001/archderm.1971.04000150094014