Cystic clear cell tumor of borderline malignancy of the ovary lacking fibromatous components: report of two cases and a possible new histological subtype.
BACKGROUND
All of the ovarian borderline clear cell tumors ever reported had, without exception, an adenofibromatous pattern.


METHODS
We report two cases of borderline cystic clear cell tumor of the ovary without apparent invasive lesions or adenofibromatous components.


CONCLUSIONS
This is the first report of cystic clear cell tumors of borderline malignancy, indicating a possible new histological subtype.
Department of Obstetrics and Gynecology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto 390-8621, Japan.
Akihisa
A
Suzuki
Tanri
T
Shiozawa
Atsushi
A
Mori
Kaoru
K
Kimura
Ikuo
I
Konishi
D018262:Adenocarcinoma, Clear Cell / Q000145:classification / Q000473:pathology*; D000368:Aged; D005260:Female; D005350:Fibroma / Q000145:classification / Q000473:pathology*; D006801:Humans; D008875:Middle Aged; D010051:Ovarian Neoplasms / Q000145:classification / Q000473:pathology*