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Objective: To determine whether the frequency and severity of congenital anorectal malformations (CARMs) differs by sex., Study Design: We included 129 patients (0-319 weeks old) diagnosed with CARMs, who had been referred to our Department of Pediatric Surgery between 2004 and 2013. Rectoperineal and rectovestibular fistulas were classified as mild CARMs, all others as severe. If a patient was diagnosed with CARM within 48 hours after birth, this was considered an early diagnosis, all others as late., Results: Seventy-five (58%) girls and 54 (42%) boys were diagnosed with different forms of CARM. More patients had mild rather than severe forms of CARM (67% and 33%, respectively, P <.001). We found that 89% of girls had a mild form of CARM, whereas 65% of boys had severe forms (P <.001). All severe forms were diagnosed early, whereas 54% mild forms were diagnosed early and 46% were diagnosed late., Conclusions: Girls more often have mild forms of CARM, whereas boys more often have severe forms. Overall, the distribution across the sexes is equal. Because chronic constipation can be the only symptom of mild CARMs, it often requires more time to diagnose than severe forms. Many women are, therefore, diagnosed with CARMs at an older age, or they may go undiagnosed altogether. Subsequently, these women have a greater risk of full rupture during vaginal delivery., (Copyright © 2017 Elsevier Inc. All rights reserved.)

Objective: To determine the prevalence of congenital heart defects (CHDs) in patients with mild or severe congenital anorectal malformations (CARMs), and whether all patients with CARM need pediatric cardiology screening., Study Design: We included 129 patients with CARM born between 2004 and 2013, and referred to University Medical Center Groningen. Recto-perineal and recto-vestibular fistulas were classified as mild CARMs, all others as severe. Significant patent foramen ovale, secundum atrial septal defect, and small ventricular septum defect were classified as minor CHDs, all others as major., Results: Of 129 patients with CARM, 67% had mild CARM, 33% severe CARM, and 17% were additionally diagnosed with CHD. CHDs were distributed equally in patients with mild or severe CARMs. Patients with multiple congenital abnormalities were more frequently diagnosed with CHD (n = 16, 36%) than patients without multiple congenital malformations (n = 5, 9%, P = .001). Patients with CARM diagnosed with CHD using pediatric cardiac echo screening were younger than 3 months of age at diagnosis. Earlier general pediatric examinations missed 7 (50%) children with mild and 4 (50%) with severe CHDs., Conclusions: The severity of CARM could predict neither prevalence nor severity of CHD. More than one-half of CHDs were missed during the first physical examination. No new CHDs were found in patients older than 3 months of age at the time CARMs were diagnosed. We recommend screening all patients with CARM younger than 3 months of age for CHD at the time CARM is diagnosed. Preoperative echocardiography should be the rule in children younger than 3 months of age and with multiple congenital anomalies., (Copyright © 2016 Elsevier Inc. All rights reserved.)