Supernumerary ovary presenting as a paraduodenal duplication cyst

• Supernumerary ovaries are an extremely rare gynecologic anomaly.
• Pediatric surgery consulted for a presumed congenital intestinal anomlay.
• Supernumerary ovaries have a pre-malignant potential.

Supernumerary ovary is a rare gynecological anomaly and is generally excised due to its potential malignant transformation. We report a case of a patient who was referred for excision of a probable duodenal duplication cyst that was subsequently identified as a paraduodenal supernumerary ovary. Pediatric surgery was consulted on an adolescent patient due to a presumed congenital anomaly of the intestinal tract based on imaging studies.