Characteristic sonographic, CT and radiographic findings of ovarian cystic teratoma with fat-fluid layering

Y. L. Wan*, S. H. Ng, Yau-Yau Wai, T. Y. Lee

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

Abstract

Background: The ultrasonographic patterns of ovarian cystic teratoma are usually variable and nonspecific. The characteristic radiologic and specific sonographic findings of cystic teratomas are herein described. Materials and methods: The imaging studies of five cases of pathologically proven ovarian cystic teratoma with gravity-dependent fat-fluid layering (GDFFL) were reviewed. The imaging findings with respect to size, echo pattern, calcification, and GDFFL on various imaging modalities were analyzed. Results: The diameter of the tumors ranged from 9 cm to 28 cm (mean, 18 cm). The echo patterns were predominantly cystic in three cases and complex in two. Calcification was identified by ultrasound in all five cases, and by radiography in four. GDFFL was shown by plain film in one of three cases in which erect radiographs were obtained. The supernatant of the GDFFL in all cases was hyperechoic on sonogram and was of fat density on CT imaging. Conclusion: The demonstration of an abdominal mass with fluid-fluid layering and hyperechoic supernatant is pathognomonic for a mature cystic teratoma.

Original languageEnglish
Pages (from-to)93-97
Number of pages5
JournalJournal of Medical Ultrasound
Volume2
Issue number2
StatePublished - 1994

Keywords

  • computed tomography
  • ovarian cyst
  • teratoma
  • ultrasonography

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