Objective: To evaluate the significance of a new sign in the hysteroscopic incision process of the septate uterus.
Design: This is a prospective case control study.
Design classification: II-2.
Settings: The study was performed in a research hospital.
Patients: Fourty-seven consecutive cases were operated for septate uterus.
Intervention: Septum incision was performed in all cases with a hysteroscopic resectoscope under laparoscopic supervision.
Measurements and main results: Methylene blue 0.25% was injected through a Rubin canula in all cases for the assessment of tubal patency. Following the methylene blue injection, hysteroscopic septum incision was performed.
Conclusion: A line (blue line) on the top of the cavity has been observed in 33 of 47 (70.2%) cases. This line (blue line) can be used for determining the midline especially before hysteroscopic incision of uterine septum and can also shorten the operation time.