Management of melanoma of the foot in our subregion: Is preliminary biopsy always required?

Background: Majority of patients with melanoma of the foot in our subregion present late. After preliminary excision biopsy for these patients, many of them do not come back for further excision when there is an indication to do so following biopsy result. A better result could be achieved by using wider margins for excision biopsy in patients with low socio-economic status. Objectives: We assessed the role of excision of melanoma of the foot without preliminary biopsy as an option in the management of melanoma of the foot in our subregion. Materials and Methods: This was a 5-year retrospective review of patients with melanoma of the foot that presented to a tertiary health institution in Nigeria from December 1, 2014 to November 30, 2019. Results: Half of the patients with lesions that have not advanced locally (35.3%) had wide local excision with 2–3 cm margin without preliminary biopsy, relying on clinical diagnosis of melanoma. Another 35.3% of same number as those mentioned above were managed by doing a preliminary biopsy. Incision biopsy was employed for those with distant metastasis or lesions where amputation of any form was indicated (29.4%). Conclusion: Melanoma of the foot can be diagnosed clinically with a high degree of accuracy in majority of patients. Preliminary biopsy is essential for lesions requiring amputation or very large lesions. For small lesions, excision biopsy with wider margins than is used for preliminary biopsy is beneficial especially for poor patients who tend to delay having a second surgery that is definitive due to financial constraint, ignorance, or other reasons.