Twenty-eight cases of abdominal scar endometriosis from Janurary

1980 to December

1993 are reported. Of these patients

twenty-four underwent term cesarean section

and four underwent a midtrimester abortion by abdominal hysterotomy

The majority of patients manifested symptoms 1 year after the operation. The most common was a painful mass of scar tissue that became swollen and tender during menstruation. The pathogenesis

diagnosis and treatment are discussed. In correlation with the pathological findings

the effects of drug therapy are evaluated. It was found that surgical excision is the best method of treatment.