Mullerianosis of the Ureter: An Uncommon Intersection of Gynecological and Genitourinary Pathology

Mullerianosis is a term used to describe a pathologic entity comprised of at least 2 types of Mullerian-type epithelia (tubal, endocervical, or endometrial) at non-gynecologic sites. This is an uncommon occurrence in the urinary tract. To the best of our knowledge, only 3 instances of Mullerianosis involving the ureter have been reported. We present a fourth report and describe the clinical, radiological, and histopathologic findings. Awareness of this rare process is crucial to avoid misdiagnosis.