Subtypes of T-shaped uterus

Objective: To present three different subtypes of T-shaped uterus with the use of three-dimensional (3D) ultrasound imaging and hysteroscopy. Design: Video article. Setting: Fertility center. Patient(s): Three cases showing the different subtypes of T-shaped uterus. Intervention(s): 3D ultrasound imaging and hysteroscopy. Main Outcome Measure(s): Distance between the interostial line and external uterine profile at the midcoronal plane of the uterus obtained with the use of transvaginal 3D ultrasound; delineation of the external uterine contour and the length of any existing internal indentation (defined as the distance between the interostial line and the indentation's edge at the cavity). Result(s): It is possible to identify three different subtypes of T-shaped uterus: the most common type of T-shaped uterus, with thick lateral walls and normal fundus (without septum or subseptum appereance) and interostial distance; the Y-shaped uterus, with thick lateral walls, fundal septum or subseptum, and reduced interostial distance; and the I-shaped uterus, with very thick lateral walls (even above the isthmus) and severe reduction of the interostial distance (tubular appearance of the whole uterus). Conclusion(s): We solicit to investigate the occurrence of different T-shaped uterus subtypes in large cohorts, to evaluate whether they may have different reproductive outcomes and whether they may need different approaches for surgical correction through hysteroscopic metroplasty.