A Case of Squamoid Eccrine Ductal Carcinoma of the Auricle Mimicking Perichondritis.
Hyeok Tae Kweon, Chan Mi Lee, Cha Dong Yeo et al.
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Case in brief
A patient presented with an auricular lesion that clinically resembled acute perichondritis. The diagnosis was squamoid eccrine ductal carcinoma (SEDC), an eccrine carcinoma subtype. Histopathologically, the tumor involved the dermal and subcutaneous layers while sparing the epidermis, a finding that helps explain the clinical diagnostic confusion. The abstract does not report treatment or outcome.
What made this case unusual
The epidermis was spared despite tumor involvement of the dermis and subcutis, allowing this auricular carcinoma to mimic acute perichondritis.
Diagnostic / clinical pearl
An auricular lesion resembling perichondritis may warrant consideration of SEDC; epidermal sparing does not exclude a dermal or subcutaneous carcinoma.