Incidentally found and unexpected tumors discovered by MRI examination for temporomandibular joint arthrosis

Yoshinobu Yanagi, Jun Ichi Asaumi, Yuu Maki, Jun Murakami, Miki Hisatomi, Hidenobu Matsuzaki, Hironobu Konouchi, Yosutoshi Honda, Kanji Kishi

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We examined the frequency of incidentally found or unexpected tumors discovered at the time of magnetic resonance imaging (MRI) examinations in the temporomandibular joint (TMJ) region for patients with suspicion of TMJ arthrosis. Five MR images (T1-weighted transverse scout image and proton density and T2-weighted oblique sagittal images at the open and closed mouth) were acquired. In 2776 MRI examinations of TMJ arthrosis, two tumors were discovered. They consisted of an adenoid cystic carcinoma in the deep portion of the parotid gland, and a malignant tumor extending from the infratemporal fossa to the parapharyngeal space. The rate of incidentally founded or unexpected tumors in TMJ examinations was low (0.072%), but the two tumors found were malignant tumors, and therefore, scout image should be carefully examined, not only used for positing the slice.

Original languageEnglish
Pages (from-to)6-9
Number of pages4
JournalEuropean Journal of Radiology
Volume47
Issue number1
DOIs
Publication statusPublished - Jul 2003

Keywords

  • Head and neck
  • Incidentally found tumor
  • Malignant tumor
  • Surface coil
  • TMJ
  • TMJ arthrosis
  • Unexpected tumor

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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