Clinical features of Mayer–Rokitansky–Küster–Haüser syndrome diagnosed at under 16 years old: results from a questionnaire survey conducted on all institutions of pediatric surgery and pediatric urology in Japan

Japanese national survey of 21 MRKH patients diagnosed before age 16 reveals 86% had type II with associated anomalies, most commonly anorectal malformation (72%). Patients with ARM were diagnosed significantly earlier (median 1.5 vs 9.1 years), highlighting the importance of screening female ARM patients for müllerian anomalies during preoperative workup.