Extrauterine adenosarcoma is very rave and originates in the ovary, adnexa,
or myometrium. Cytologic study of ascites is very important to determine c
linical staging of malignant ovarian tumors and provide adequate therapy fo
r recurrence. The cytomorphologic features of adenosarcoma have been only r
arely described. A 77-yr-old woman visited a hospital with a complaint of l
ower abdominal pain for I Ino. A tumor originating from the right adnexa in
die pelvis, and involving the rectum, was found in surgery. In the ascitic
fluid cytology, a fell, dispersed turner cells with large cytoplasm and nu
clei were oval-shaped with nuclear invagination, The chromatin was finely g
ranular; one or two nucleoli were conspicuous. To our knowledge, this is th
e fifteenth reported case of adenosarcoma of the ovary, and there have been
no prior reports describing the cytological features of ascitic fluid cell
s in adenosarcoma of the ovary. (C) 2001 Wiley-Liss, Inc.