Mullerian Choristoma as a Cause of Tethered Cord Syndrome: A Case Report in a 13-Year-Old Worsening after the Onset of Menarche

Abstract

Abstract Mullerian choristoma as a cause for tethered cord syndrome is exceedingly rare with very few cases being reported in the literature. We report a 13-year-old girl with spinal dysraphism who was operated in 2013 for lipomeningomyelocele and tethered cord. She now presented to us with back pain and leg pain for 6 months duration. Magnetic resonance imaging of lumbosacral spine revealed an intramedullary cystic mass in the conus medullaris associated with haemorrhage in association with the residual lipoma. Intraoperatively following excision of intramural lipoma, a hemorrhagic cystic intramedullary mass was encountered and excised. Histopathology of the mass revealed a uterus-like structure with endometrial lining and associated structure resembling fallopian tube. A diagnosis of Mullerian choristoma was made. This rare entity is discussed in this case report.