Chronic non-healing sinus manifesting in episiotomy scar: hidden fistula-in-ano.

A non-healing sinus manifesting in an episiotomy scar after it has healed is rare. We report one such woman. There were no underlying risk factors like third- or fourth-degree tear or inflammatory bowel disease. In spite of previous attempted exploration the problem had persisted. Examination of the case under anaesthesia revealed it to be a low fistula-in-ano. The methodical evaluation and management of the case is detailed. Fistulectomy completely cured the patient. Most of these patients present to obstetricians and gynaecologists. Awareness and a high index of suspicion of communication with the anorectal canal are important. A team approach with the colorectal surgeon would help in better preoperative counselling, planned evaluation and definitive procedure to completely cure the patient.