MR Findings of Primary Ovarian Granulosa Cell Tumor with Focus on the Differentiation with Other Ovarian Sex Cord-stromal Tumors

Overview

Journal J Ovarian Res

Publisher Biomed Central

Specialties Gynecology & Obstetrics
Reproductive Medicine

Date 2018 Jun 7

PMID 29871662

Citations 18

Authors

He Zhang

Hongyu Zhang

Shouxin Gu

Yanyu Zhang

Xuefen Liu

Guofu Zhang

Affiliations

Soon will be listed here.

Abstract

Background: To describe magnetic resonance imaging (MRI) features of ovarian granulosa cell tumors (OGCTs) and compare with other sex cord-stromal tumors (OSCs) in ovary.

Methods: MR findings of 18 patients with surgically confirmed ovarian granulosa cell tumor were retrospectively reviewed by two radiologists with consensus reading. All MR examinations were prospectively performed within one month. Clinical and imaging characteristics of OGCTs were evaluated and compared with OSCs (control group).

Results: In 18 patients, 20 ovarian granulosa cell tumors were detected on MRI. Sixteen tumors appeared as solid or mostly solid mass (16/20), while 4 tumors as cystic mass. Pathological pelvic fluid was detected in 1 OGCT (1/18) and 11 OSCs (11/34) (p = 0.031).On T2 weighted imaging (T2WI), most of OGCTs displayed hyperintense signal and mixed signal (19/20); on T1 weighted imaging (T1WI), 11 OGCTs (11/20) displayed similar signal as on T2WI imaging. The lesion signal between OGCT and OSC differed significantly on both T1WI (p = 0.017) and T2WI (p = 0.002). Tumoral bleeding was detected in 6 OGCTs on MRI. On diffusion weighted imaging (DWI) images, OGCTs mostly appeared as high signal (16/20). Average apparent diffusion coefficient (ADC) value derived from DWI images in the OGCT group (0.84 ± 0.26× 10 mm/s was less than the control group (1.22 ± 0.47 × 10 mm/s) with statistical difference (p = 0.002).

Conclusions: MRI could provide important information in OGCT diagnosis. ADC value might be useful in differentiating OGCT from OSC.

Citing Articles

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