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Verrucous Carcinoma of the Foot: A Retrospective Study of 19 Cases and Analysis of Prognostic Factors Influencing RecurrenceCutis. 2022 Mar;109(3):E21-E28.
This study sought to evaluate a cohort of patients with verrucous carcinoma of the foot with special focus on 5 cases of locally recurrent tumors despite negative margins. Nineteen cases of verrucous carcinoma of the foot were identified through the University of Michigan (Ann Arbor, Michigan) pathology database from 1995 to 2019 and were included in demographic and clinical presentation analyses. Sixteen cases were treated at the University of Michigan and are included in the treatment analyses. A review of medical records was conducted to characterize clinical, surgical, and pathologic features. Recurrent cases were found to have a predilection for nonglabrous skin of the foot and great toe. Otherwise, there was little to differentiate outcomes between recurrent and nonrecurrent groups based on demographic, clinical, surgical, or histopathologic data. Recurrent tumors regrew locally and were not associated with histologic progression to conventional squamous cell carcinoma. Verrucous carcinoma of the nonglabrous surface of the foot should have a higher suspicion for possible local recurrence. Recurrence occurs within months of treatment, deserves early biopsy, and warrants aggressive re-treatment. Future directions should include greater examination of pathologic features and genetic markers to improve management of verrucous carcinoma of the foot.
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