Comparison of High‐Resolution Anorectal Manometry and Magnetic Resonance Defecography in Patients With Obstructive Defecation: Are Both Tests Necessary?

Anatomic findings on MRD were similar between patients with and without evidence of dyssynergia identified by HR-ARM. In this retrospective review, simultaneously undergoing MRD in addition to HR-ARM does not appear to provide significant additional diagnostic information to guide therapeutic recommendations. Large prospective studies to evaluate the added value of MRD are needed.