The invention discloses an ostomy accessory (20) for an intestinal stoma of a mammal ostomy patient, adapted to be used together with an implanted constriction device with an artificial closing sphincter function for closing the intestinal passageway. The ostomy accessory is adapted to absorb secret from the mucosa wall of the part of the intestine which is distal to the constriction device, which may secrete or disseminate some liquid matter, which may thus spill out and cause discomfort to the patient, for example by staining the clothes of the patient. The ostomy accessory comprises an insertion portion (21) for insertion into said intestinal stoma and comprising an absorbing body (23, 24, 25) for absorbing and retaining liquid matter consisting of liquid secreted from a mucosa wall of the intestine (31). The accessory (20) also comprises an outer part (22) attached to the insertion portion and adapted to seal said stoma (5) together with the insertion portion (21), the outer part (22) comprising a liquid non-permeable layer in order to allow the absorbing body to retain absorbed liquid secretions from the mucosa wall so that the mucosa wall does not dehydrate.
