MR features of aneurysmal bone cyst of the mandible and characteristics distinguishing it from other lesions

Jun Ichi Asaumi, Hironobu Konouchi, Miki Hisatomi, Hidenobu Matsuzaki, Hiroshi Shigehara, Yasutoshi Honda, Kanji Kishi

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

Aneurysmal bone cyst (ABC) is a relatively rare, non-neoplastic expansile lesion of bone. Bleeding may occur during an operation or biopsy for ABC, as this cyst is an aneurys with numerous pools of blood. Therefore, it is necessary to diagnose ABC before treatment or biopsy. In the present report, we describe the characteristic computed tomography (CT) and magnetic resonance imaging (MRI) features of ABC in the mandible. Based on the literature and on our own experiences, we compare with the features of ABC with the corresponding features of other lesions showing similar conventional radiographic appearances. In the present case, bone-targeting CT showed the characteristic feature, which reflected the histopathological appearance of a partially cystic meshwork divided by coarse septa. MRI showed almost homogeneous intermediate signal intensity, including a partial slight low-signal-intensity area on the T1-weighted image, and homogeneous high signal intensity, which showed a 'bubbly' appearance, on T2-weighted image. On the enhanced T1-weighted image, the intermediate signal intensity areas apart from the areas that showed slight low-signal intensity on the non-enhanced T1-weighted image, were well enhanced. This creates a 'honeycomb' appearance. The 'meshwork' appearance on bone-targeting CT, the 'bubbly' appearance on the T2WI and the 'honeycomb' appearance on Gd-T1WI may be the characteristic features of ABC.

Original languageEnglish
Pages (from-to)108-112
Number of pages5
JournalEuropean Journal of Radiology
Volume45
Issue number2
DOIs
Publication statusPublished - Feb 1 2003

Keywords

  • CT
  • Cyst
  • Diagnosis
  • MRI
  • Mandible
  • Tumor

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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