Distal digital keratoacanthoma: two cases with a review of the literature.
BACKGROUND
Distal digital keratoacanthoma (DKA) is an uncommon tumor difficult to diagnose clinically, and even histologically, with certainty.


OBJECTIVE
Our purpose is to report on two new cases and to discuss the clinical, histologic, and differential diagnosis.


METHODS
We have reviewed all well documented cases published in the literature.


RESULTS
No single diagnostic criterion is sufficiently sensitive and specific to be pathognomonic.


CONCLUSIONS
The diagnosis of DKA should be based on the correlation of clinical, radiological and pathologic findings, but the tumor is frequently diagnosed histologically as "squamous cell carcinoma, keratoacanthoma type" or as keratocarcinoma.
Baran
R
R
Nail Disease Center -42, rue des Serbes 06400, Cannes, France. baranrmd@cote-dazur.com
Mikhail
G
G
Costini
B
B
Tosti
A
A
Goettmann-Bonvallot
S
S
D000328:Adult; D003937:Diagnosis, Differential; D006801:Humans; D007636:Keratoacanthoma / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery; D008297:Male; D008875:Middle Aged; D009260:Nail Diseases / Q000175:diagnosis* / Q000473:pathology / Q000601:surgery