In case of basal cell carcinoma of the nail bed, the initial diagnosis of chronic paronychia led to delay in diagnosis so that eventually amputation of the thumb proximal to the interphalangeal joint was required.
Hoffman S. Basal Cell Carcinoma of the Nail Bed. Arch Dermatol. 1973;108(6):828. doi:10.1001/archderm.1973.01620270050014
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