MR of intraparotid masses

B. N. Schlakman, D. M. Yousem

Research output: Contribution to journalArticle

Abstract

PURPOSE: To determine which MR techniques are best for identifying intraparotid masses and to assess the utility of MR for predicting specific diagnosis. METHODS: A retrospective review of 31 intraparotid masses was performed. Lesion conspicuity and signal intensity characteristics were evaluated by objectively measured regions of interest and by subjective visual review. RESULTS: The T1-weighted images produced the highest lesion conspicuity in 25 of 31 masses. All the masses were easily detected as hypointense lesions on the T1-weighted scans with good or excellent conspicuity; on the T2-weighted images nine lesions appeared isointense to the normal parotid tissue, including six malignancies. Gadolinium-enhanced images were not helpful for identifying the intraparotid masses. Warthin tumors and malignancies tended to be hypointense or low in conspicuity on T2- weighted images. CONCLUSIONS: The T1-weighted images were best for detecting parotid masses. The T2-weighted images may help in limiting a differential diagnosis, but a specific diagnosis cannot be made without biopsy.

Original languageEnglish (US)
Pages (from-to)1173-1180
Number of pages8
JournalAmerican Journal of Neuroradiology
Volume14
Issue number5
StatePublished - Jan 1 1993

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ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Clinical Neurology

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