Abstract:

The oblique septum of uterus, known as Robert′s uterus, is an developmental malformation of obstructive Mullerian tube. The lower end of the septum is fused with one side of the uterine, and this part of uterine cavity is closed. It is rare in uterine malformations. Robert′s uterus is usually divided into two cavities by mediastinum. Mediastinum is inclined to one side of the uterine cavity. It is often found after menarche in puberty, because of the progressive dysmenorrhea occurs due to the increasing blood accumulation in the uterine cavity. Dysmenorrhea is not particularly obvious in some cases. Clinically, the pregnancy implanted in the oblique septum is more rare, and some of them are misdiagnosed. After 41 days of menopause, the hCG of the patient′s blood was 3 077.83 mIU/mL. Gynecological sonography showed that there was an uneven echo mass on the right muscle wall - tubal interstitial pregnancy is not excluded. The size was about 1.6 cm×0.9 cm×1.2 cm, and there was a dark area with a size of 0.5 cm×0.4 cm×0.4 cm, which was not connected to the uterine cavity. Hysteroscopy and dilatation and curettage were performed. Three days later, the retested hCG is 10 220.12 mIU/mL, ultrasound-guided hysteroscopy combined with laparoscopic surgery was performed, the final diagnosis of oblique septal pregnancy. The diagnosis and treatment experience of this case has a certain reference value for the treatment and diagnosis process of clinical abnormal pregnancy and provides clinical experience for reducing missed diagnosis and misdiagnosis of rare abnormal pregnancy.

Key words: Oblique septum of uterus, Pregnancy,ectopic, Congenital abnormalities, Hysteroscopy, Laparoscopy, Case reports