Identification of Warthin tumor: magnetic resonance imaging versus salivary scintigraphy with technetium-99m pertechnetate.

Abstract

OBJECTIVE:

The aim of this study was to evaluate the accuracy of technetium-99m (Tc-99m) pertechnetate scintigraphy and magnetic resonance (MR) imaging in the diagnosis of Warthin tumor.

METHODS:

Sixteen cases of Warthin tumor and 17 cases of non-Warthin tumor were examined by Tc-99m pertechnetate scintigraphy with lemon juice stimulation and MR imaging, including T1-weighted, T2-weighted, short inversion time inversion recovery, diffusion-weighted, and contrast-enhanced dynamic images. We used the receiver operating characteristic (ROC) curve to evaluate diagnostic accuracy.

RESULTS:

The mean area under the ROC curves of MR imaging in the diagnosis of Warthin tumor (0.97) was higher than that of Tc-99m pertechnetate scintigraphy (0.88).

CONCLUSION:

Magnetic resonance imaging is more useful in the evaluation of Warthin tumor than Tc-99m pertechnetate scintigraphy.

• Authors: Ken Motoori, Takuya Ueda, Yoshitaka Uchida, Hideaki Chazono, Homare Suzuki, Hisao Ito
• Journal: Journal of computer assisted tomography (J Comput Assist Tomogr) 2005 Jul-Aug Vol. 29 Issue 4 Pg. 506-12 ISSN: 0363-8715 [Print] United States
• PMID: 16012309 (Publication Type: Clinical Trial, Comparative Study, Journal Article)

Chemical References

• Sodium Pertechnetate Tc 99m

Topics

• Adenolymphoma (diagnostic imaging, pathology)
• Adolescent
• Adult
• Aged
• Aged, 80 and over
• Brain Neoplasms (diagnostic imaging, pathology)
• Female
• Humans
• Magnetic Resonance Imaging (methods)
• Male
• Middle Aged
• Radionuclide Imaging
• Salivary Glands (diagnostic imaging)
• Sensitivity and Specificity
• Sodium Pertechnetate Tc 99m