[Diagnosis and treatment of rudimentary uterine horn complicating pregnancy].

During the period from (May 1980 to July 1985), six cases of rudimentary uterine horn complicating pregnancy were presented. Artificial abortion failed in five cases, one case complained of lower abdominal mass only. The other 5 cases were correctly diagnosed preoperatively. In one case the pregnant horn ruptured with profuse internal haemorrhage and deep shock. The horn cavity was separated from the normal uterine cavity by a connective tissue cord in all 6 cases. Two of the cases had dysmenorrhea and congenital abnormally of ureter in the same side of the rudimentary horn. Diagnosis was discussed in detail B-ultrasound scanning is useful for the early diagnosis of rudimentary horn pregnancy. The rudimentary horn should be resected together with the fallopian tube on the same side with preservation of ovary. Its round ligament must be cut and fixed to the normal uterus.