In spite of being rare, the anorectal region is the third most frequent localization of the melanoma, following the skin and eyes. The results of treatment are conflictant, with variable averange survival of 2,7 months until 30 months in patients submitted to surgical treatment. In this study, the results of surgical treatment in five cases of malignant anorectal melanoma are presented. One patient was in clinical staging I, two in II and two in III. All of them have been operated, four submitted to local excision of the tumor and one to abdominoperineal amputation of the retum. Two patients were submitted to adjuvant chemiotherapy and one to radiotherapy and inespecific imunotherapy with oral BCG. The unique patients in the stage I had a survival of 13 months, similar to the patients III (average survival = 14 months), and inferior to the patients II ( average survival = 87,5 months ). The authors question the validity of the clinical stage I ( localizated tumours ) like a prognostic factor, because it desconsider lhe penetration grade of the tumour in tha anorectal wall. The still suggest the realization of multicentric studies to allow the establishment of a therapeutic uniformity to the malignant anorectal melanoma.
Anorectal neoplasm; Malignant melanoma; Surgical treatment; Survival