[A neurogenic cyst of the ovary].

A case of a bilateral adult cystic teratoma of the ovary in a 45-year-old woman is reported. The cyst of the right ovary was a typical "ovarian dermoid". The cyst of the left ovary consisted of adult neurogenic tissue, with islands of the ependyma on the surface. The tissues of the endodermal and mesodermal origin were also present in small quantities. It is evident from the literature that "neurogenic cysts" are much larger than "dermoid cysts", and they are reported only in preburtal girls. In the case presented the "neurogenic cyst" was not substantially larger than the "dermoid cyst" in the contralateral ovary. The the authors' knowledge, this is the first case of a "neurogenic cyst" of the ovary in the reproductive life reported so far.