Causa-Andrieu P, Nicola R, Lipsich F, Adri D, Gomez M, Pol M, Wernicke A, Saraniti G, Chacon CRB. Characterization of Ovarian Granulosa Cell Tumors using Magnetic Resonance Imaging.
Med Res Arch 2022;
10:10.18103/mra.v10i6.2813. [PMID:
36276660 PMCID:
PMC9583456 DOI:
10.18103/mra.v10i6.2813]
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Abstract
PURPOSE
To identify the MRI features that aid in the characterization of ovarian granulosa cell tumors.
MATERIALS AND METHODS
11 MR pelvis of an adult woman with pathology-proven ovarian granulosa cell tumors with surgical pathology.We evaluated the patient's age, Ca-125, size, laterality, and with MRI features such as indirect signs (i.e., thickened endometrium > 0.9 cm), morphology (cystic, solid-cystic, or solid), subacute hemorrhage, T2 signal (low or intermediate-to-high), restricted diffusion (B values: 0, 50, 1000 sec/mm3/ADC), and dynamic enhancement (intense or similar to myometrium). Also, the presence of ascites, peritoneal implants, or adenopathy.
RESULTS
The final cohort included 11 women with a surgical-pathological diagnosis of granulosa cell tumors. The median age was 52.4 years (range, 17-80). The Ca-125 level was with a median within normal limits. The median size was 9.4 cm. Most cases were unilateral (81.8%) and more frequent on the left (54.5%).
MRI ANALYSIS
36.4% had endometrial thickening. Ovarian granulosa cell tumors were polymorphous: cystic (54.6%), mixed solid-cystic (9.1%), and solid (36.3%). Most GC had intermediate to high signal on T2 (90.9%), restricted diffusion (81.8%), intense enhancement (81.8%), and 36.4% had intraparenchymal bleeding. 9.1% had associated implants/adenopathy/ascites at diagnosis.
CONCLUSION
The MRI features characteristic of ovarian granulosa cell tumors were the polymorphous morphology, an intense enhancement to the myometrium, restricted diffusion, and the presence of intraparenchymal hemorrhage.
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