Choroid plexus in benign cystic teratoma of the ovary

Perplexing findings in a cystic teratoma

“…The fluid aspirated from most dermoid cysts has characteristic features; it is usually turbid and greasy or oily, 2 although in 2% the contents are serous, mucinous or resemble cerebrospinal fluid. 3,4 Microscopically, there are anucleate squames, sebaceous gland cells, columnar epithelium, keratin, inflammatory cells, which may include foreign body type giant cells, and hair. Immature teratomas comprise less than 1% of all ovarian neoplasms and in contrast are more often solid and can contain tissue of any type but neural tissue is often abundant.…”

“…Neural elements have been described in up to 41% but they rarely form the predominant component. The fluid aspirated from most dermoid cysts has characteristic features; it is usually turbid and greasy or oily, 2 although in 2% the contents are serous, mucinous or resemble cerebrospinal fluid 3 , 4 . Microscopically, there are anucleate squames, sebaceous gland cells, columnar epithelium, keratin, inflammatory cells, which may include foreign body type giant cells, and hair.…”