[Transverse vaginal septum diagnosed in sisters. Cases report].

Transverse vaginal septum is a disorder that would arise from a failure in the fusion and/or channeling of the urogenital sinus and the müllerian ducts with low frequency but with a significant impact on the health of patients. The treatment is surgical and it will depend on the location and thickness of the septum. Sometimes, it described a female sex-limited autosomal recessive transmission but few cases of family association have been reported. We present the cases of two sisters who had this rare entity 5 years apart and were diagnosed by the presentation of an intense hypogastric abdominal pain at the age of 11 and 12 years when they had a Tanner stage III pubertal development and primary amenorrhea. Sociedad Argentina de Pediatría.