فك فوقاني حاوي پنج دندان رسيده در كيست درموييد تخمدان

Maxillary bone containing five well developed teeth in ovarian dermoid cyst

The present of tooth in dermoid cyst is reported frequently. We report here, one to the rarest cases of ovarian cysts in which located a well recognized maxillary bone containing five well-formed teeth. It seems that this is one of the rarest or may be the first reported case with this level of differentiation in dermoid cyst. Mature cystic teratoma, which is germ cell ovarian tumor, includes more than 20% of all ovarian neoplasisas. This is the most common ovarian tumor in pediatric age group and early reproductive years. Abouth one third of these tumors contian tooth. Although there are many examples of tooth in teratomas, the exact level of differentiation of fetal germinal layers in these tumors is not reported. Despite extensive searches in medical literature and references, ʹwe found no other case with this level of differentiation and it seems to be one of the rarest or the first reported case in the history of medical researches, regarding differentiation in dermoid cyst.