A condition where a person has a gonad that contains both ovarian and testicular tissue
Ovotesticular syndrome (also known as ovotesticular disorder or OT-DSD) is a rare congenital condition where an individual is born with both ovarian and testicular tissue.[1][2] It is one of the rarest DSDs, with only 500 reported cases.[3] Commonly, one or both gonads is an ovotestis containing both types of tissue.[3] Although it is similar in some ways to mixed gonadal dysgenesis, the conditions can be distinguished histologically.[4]