PMID: 674415Aug 1, 1978

Metastasizing keratoacanthomas? The difficulties in differentiating keratoacanthomas from squamous cell carcinomas

Plastic and Reconstructive Surgery
P L Schnur, P Bozzo

Abstract

The problem in diagnosis of keratoacanthoma versus squamous cell carcinoma has been reviewed, and 13 patients are presented to illustrate the difficulties in differentiating between these two lesions. If the pathologist is in doubt, the lesion should be called "probable keratoacanthoma, but squamous cell carcinoma cannot be ruled out." We should all be aware that even the most careful pathologist, using all the information and material available, may still erroneously diagnose a lesion as a benign keratoacanthoma--one which, if inadequately treated, may metastasize or recur as a squamous cell carcinoma. Therefore, it is important for the clinician to treat most keratoacanthomas by adequate removal and close follow-up.

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Related Concepts

Malignant Neoplasm of Skin
Neoplasm Recurrence, Local
Differential Diagnosis
Squamous Cell Carcinoma
Squamous Cell Carcinoma - Category
Keratoacanthoma
Neoplasm Metastasis
Keratoacanthoma of Eyelid
Metastatic Neoplasm
Renal Cell Carcinoma

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