The cytologic findings of a sex cord tumor with annular tubules (SCTAT
) that ruptured during laparoscopy are described. Features useful in d
istinguishing SCTAT from other ovarian sex cord tumors include the pre
sence of highly cellular tubular formations containing well-delimited
glassy pink material and absence of single cells. To the best of our k
nowledge, the cytology of SCTAT has not been previously reported. (C)
1998 Wiley-Liss, Inc.