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[Mucinous adenocarcinoma of the anal region. Study of 4 cases]
F Sacristán1, P Iglesias, J A Ortiz
1Servicio de Anatomía Patológica, Hospital Juan Canalejo, La Coruña.
Objective:
We report 4 cases of a special anal tumor featuring a long history of inflammatory signs and fistulas in that area.
Design:
A retrospective study from the histologic diagnosis back to the first symptom and up to the last follow-up or death.
Patients:
We studied all patients with a histologic diagnosis of mucinous adenocarcinoma of the anus admitted to our hospital.
Results:
All of them showed a long history of anal inflammatory signs and/or fistula before diagnosis. In all cases, the tumors were mucinous adenocarcinomas with minimal cytologic atypia. Of the 4 patients, one is dead, and we have lost the follow-up of another one 13 months after surgery when he had no evidence of recurrence.
Conclusions:
In every patient with a long-standing anal fistula or a recurrent anal abscess, a biopsy is mandatory to rule out an underlying low grade mucinous carcinoma and if it shows a low grade mucinous adenocarcinoma, the treatment of choice will be local resection if it is available. If not, an abdominal perineal resection showed be done without hesitation.