Abstract
Objective: To investigate the role of power Doppler in differentiating septate and bicornuate uterus prior to perform office operative hysteroscopy. Methods: Ten patients with previous hystory of infertility were referred to our US Dept. At the admission, transvaginal US axial scan of the uterus showed that the endometrium was as divided in two parts separated by hypoechoic tissue. B scan alone was unable to differentiate bicornuate from septate uterus. No shows difference could be found in uterine fundal contour. Power Doppler evaluation of uterine vascularization was performed in all patients. All patients were submitted to diagnostic laparoscopy. Results: In six patients the main branches of uterine arteries appeared to converge, at the uterine midline, in a single median arterial vessel flowing between the two emiuteruses, mimicking the greak letter gamma. Irregular vascular spots, at the uterine midline, have been found in the remaining four patients. Laparoscopy revealed that the a (gamma) sign was peculiar in case of bicornuate uterus. Median irregular vascular spots had been found in case of septate uterus. Conclusions: Power Doppler study of uterine malformations and the presence of the gamma sign seem to be able to differentiate bicornuate uterus from septate uterus.
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