A 74-year-old woman presented with anal bleeding and a protuberant mas
s. A biopsy of the mass revealed the proliferation of spindle-shaped c
ells,vith melanin pigments, and an abdominoperineal resection was perf
ormed, the histology of which confirmed malignant melanoma, Surgery wa
s absolutely noncurative because massive metastases were encountered i
n the pelvic and paraaortic lymph nodes. However, postoperative chemot
herapy, composed of dacarbazine (DTIC), vincristine (VCR), and nimusti
ne hydrochloride (ACNU), achieved satisfactory results, The patient ha
s been well without any evidence of recurrence for more than 3 years.