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Imaging Features and Pathologic Characteristics of Ovarian Thecoma

Li, Xinchun MD, PhD; Zhang, Weidong MD, PhD; Zhu, Guangbin MD, PhD; Sun, Congpeng MD, PhD; Liu, Qingyu MD, PhD; Shen, Yuechun MD

Journal of Computer Assisted Tomography: January/February 2012 - Volume 36 - Issue 1 - p 46–53
doi: 10.1097/RCT.0b013e31823f6186
Abdominal Imaging

Objective: To analyze the imaging findings of ovarian thecoma and to better understand the tumor features based on aspect of computed tomography and magnetic resonance images.

Methods: Nineteen ovarian thecomas confirmed by histopathologic examination were analyzed retrospectively. Image characteristics were analyzed and compared with those of the pathologic features.

Results: The mean diameter of tumors was 9.6 cm. The masses were well defined (n = 17) or ill defined (n = 2) and appeared solid with cystic areas (n = 11), entirely solid (n = 4), or cystic with solid components (n = 4). On T2-weighted/spectral adiabatic inversion recovery (T2WI/SPAIR) images, 12 cases appeared isointense or slightly hyperintense. Of the 12 cases, 8 had patchy hypersignal areas. On computed tomographic images, 7 cases showed hypodensity or isodensity. All tumors exhibited mild enhancement. On pathologic examination, the tumor was composed of spindle cells with a moderate amount of cytoplasm.

Conclusion: Imaging manifestations of ovarian thecoma are various and nonspecific. However, a large, well-defined mildly enhanced solid mass with cystic areas and especially isointense or slightly hyperintense on T2WI/SPAIR sequence in pelvic cavity may suggest the diagnosis of ovarian thecoma.

From the *Department of Radiology, The First Affiliated Hospital of Guangzhou Medical College; †Department of Radiology, Cancer Center, Sun Yat-sen University; ‡Department of Radiology, The Second Affiliated Hospital of Sun Yat-sen University; and §Department of Internal Medicine, The First Affiliated Hospital of Guangzhou Medical College, Guangzhou, P.R. China.

Received for publication July 21, 2011; accepted October 28, 2011.

Reprints: Yuechun Shen, MD, Department of Internal Medicine, The First Affiliated Hospital of Guangzhou Medical College, 151 Yanjiangxi Rd, Guangzhou, P.R. China, 510120 (e-mail: shenyc102806@163.com).

The authors report no conflicts of interest.

Copyright © 2012 Wolters Kluwer Health, Inc. All rights reserved.