Photograph of a hysteroscopic view of the uterine cavity with the right (fallopian) tubal ostium seen as a dark dot just to the left of center. The right lateral wall of the uterus (to the left side of the field of view) is normal appearing. The tissue that occupies the space between the right tubal ostium and the left tubal ostium (not seen here) in the midline of the uterine cavity is a (large) uterine septum, giving the appearance of both (right and left) tubal ostia existing at the end of cylindrical canals. When a uterine septum is transected between the tubal ostia the transected tissue retracts spontaneously and does not need to be removed. It is important to confirm that the central defect in the uterine cavity is due to a septate uterus rather than a bicornuate uterus (often done with a concurrent laparoscopy) prior to transecting this tissue.
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