Learning objectives
- To demonstrate wide spectrum of MR imaging findings of non-epithelial ovarian tumors
- To review characteristic imaging features of tumors in the non-epithelial group
- To emphasize pearls and pitfalls to differentiate them from their mimickers
Background
Ovarian cancer represents a heterogeneous group of distinct diseases ( Fig. 1 ).
Carcinomas (malignant epithelial tumors) constitute approximately 90% of ovarian cancers.
Non-epithelial ovarian tumors accounts for about 10% of all ovarian tumors [1].
They are classified as germ cell tumors and sex-cord stromal tumors of the ovary.
Those groups of tumors are seen at a younger age compared to surface epithelial tumors.
Various histological compositions of those tumors cause a wide spectrum of imaging findings.
Some of these tumors have characteristic imaging features...
Findings and procedure details
We reviewed our institutional data base for patients with an operation for ovarian mass in our gynecologic oncology unit between January 2013 and September 2017.
123 patients had pathological diagnosis of ovarian tumor other than surface epithelial tumor with mostly being mature cystic teratomas.
Sex-cord stromal tumors,
germ cell tumors and secondary tumors (malignant,
not otherwise specified) have histologic origin rather than ovarian surface epithelium ( Fig. 2 ).
1. Sex cord- stromal tumors
Ovarian stroma is composed of granulosa cells,
theca cells,
fibroblasts,
Sertoli...
Conclusion
Recognition of various MR imaging features of non-epithelial ovarian tumors is essential for accurate preoperative diagnosis and guiding treatment particularly for women of reproductive age who wants to preserve fertility.
Personal information
Hilal Sahin,
MD
Tepecik Training and Research Hospital,
Department of Radiology,
Izmir,
Turkey
Asli Irmak Biranci,
MD
Tepecik Training and Research Hospital,
Department of Radiology,
Izmir,
Turkey
Aysun Cakir,
MD
Tepecik Training and Research Hospital,
Department of Radiology,
Izmir,
Turkey
Yeliz Pekcevik,
MD,
Associate Professor
Tepecik Training and Research Hospital,
Department of Radiology,
Izmir,
Turkey
Tugba Karadeniz,
MD
Tepecik Training and Research Hospital,
Department of Pathology,
Izmir,
Turkey
Suheyla Cumhurcu,
MD
Tepecik Training and Research Hospital,
Department of Pathology,
Izmir,
Turkey
Muzaffer Sanci,
MD,
Associate...
References
1) Colombo N,
Peiretti M,
Garbi A,
Carinelli S,
Marini C,
Sessa C; ESMO guidelines working group.
Non-epithelial ovarian cancer: ESMO clinical practice guidelines for diagnosis,
treatment and follow-up.
Ann Oncol 2012;23 Suppl 7:vii20-6
2) Outwater EK,
Wagner BJ,
Mannion C,
McLarney JK,
Kim B.
Sex cord-stromal and steroid cell tumors of the ovary.
Radiographics 1998;18(6);1523-1546
3) Montoriol PF,
Mons A,
Da Ines D,
Bourdel N,
Tixier L,
Garcier JM.
Fibrous tumors of the ovary.
Clin Radiol 2013;68(12):1276-1283