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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.

© 2012 Lippincott Williams & Wilkins, Inc.