Long-term survivor of primary anorectal malignant melanoma by a multi-disciplinary approach.

Anorectal malignant melanoma tends to show an aggressive biological behaviour. Therefore, the 5-year survival rate is limited. We herein present a successful case of a super-long-term survivor (20 years) who underwent multi-disciplinary treatment. The present case suggests that a multi-disciplinary approach may be beneficial for patients with thick and extensively sized lesions after radical resection for primary anorectal malignant melanoma.