Figure M3-1 The normal uterine cavity seen using the 3-D coronal view. Note the triangular shape of the uterine cavity and the rounded outer myometrial wall or serosal surface of the uterus.

Figure M3-2 Mayer-Rokitansky-Küster-Hauser syndrome. Note the absence of the uterus and cervix in the pelvis. The vaginal probe could only be inserted part of the way into the vagina. The rest of the vagina is not developed.

Figure M3-3 A and B, Two different patients with arcuate uteri. B shows the proper way to measure the depth of the myometrial indentation. If the measurement is 10 mm or more, then it is a septum. The measurement was less than 10 mm, indicating an arcuate uterus.

Figure M3-4 Bicornuate uterus seen in 2-D and 3-D in two different patients. The 2-D image is a transverse view through the fundus of the uterus, showing two islands of endometrium and indicating a Müllerian anomaly. The 3-D image shows the typical bicornuate uterus with a deep indentation at the fundus, dividing the uterus into two distinct horns. These horns merge in the lower uterine segment. Figures A and B are one patient and C and D are another.

Figure M3-5 A and B, Uterus didelphys. Note that the two uterine horns are widely separated and take on the appearance of floppy rabbit ears on this 3-D coronal view.

Figure M3-6 3-D coronal view of a typical partial septum or subseptum. The calipers demonstrate the method of measuring the depth of the septum.

Figure M3-7 A to D, Four different patients with partially septate uteri. Note the very different widths and depths of the septae when comparing the appearance of these uteri. The smallest septum (A) measured 12 mm and has an appearance similar to the arcuate uterus in Figure M3-3.

Figure M3-8 A partially septate or subseptate uterus. A is a 2-D transverse view, showing the typical two islands of endometrium consistent with a Müllerian anomaly. B shows the preoperative 3-D coronal view of the partial septum. C shows the postoperative result of the septal excision.

Figure M3-9 Partially septate/subseptate uterus seen using 3-D and sonohysterography. A and B show the 3-D volume displaying the partial septum. C to E show the sonohysterogram images of the same septum (C is a parallel tomographic cut through the uterus). Note that the catheter is visible inside the left endometrial cavity.

Figure M3-10 Unicornuate uterus. A shows a unicornuate uterus seen with 2-D ultrasound. The anomaly is very hard to detect on this view. B and C show the single uterine horn using 3-D ultrasound. The 3-D rendered coronal view makes the anomaly obvious.

Figure M3-11 A and B, Unicornuate uterus with a noncommunicating rudimentary horn. A, The 2-D image suggests a septate uterus; however, the 3-D coronal view (B) demonstrates the rudimentary horn with an island of endometrium, which does not connect with the rest of the cavity.

Figure M3-12 Unicornuate uterus with a small rudimentary horn. Note that the rudimentary horn contains a small cavity that connects to the rest of the uterus but is tiny.

Figure M3-13 Obstructed hemivagina. This patient had a didelphic uterus, and there was a fluid collection in the vaginal region. This is a view from the perineum looking up into the vagina. Note the fluid collection (arrows), indicating an obstructed hemivagina.

Figure M3-14 Complete septate uterus with an early pregnancy in the left horn

Figure M3-15 Shallow partial septum/subseptum in a uterus that also contains a set of twins in the right horn.