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Magnetic resonance imaging of intramuscular myxoma with histological comparison and a review of the literature.

Publication ,  Journal Article
Luna, A; Martinez, S; Bossen, E
Published in: Skeletal Radiol
January 2005

OBJECTIVE: To evaluate the magnetic resonance (MR) features of intramuscular myxoma (IM) compared with its pathological findings. DESIGN: Two radiologists retrospectively reviewed records and imaging studies of patients with histologically proven IM. Two radiologists also analyzed by consensus all the MR studies (pre- and post-contrast T1-weighted and T2-weighted sequences) and a pathologist reviewed the available histological material. PATIENTS: Seventeen patients with 18 histologically proven IM were reviewed. Histological samples of 11 of these 18 tumors were available for pathological analysis. RESULTS: There were 14 women and three men, with a mean age of 58.9 years. IM involved predominantly the thigh (n=10). MR imaging showed well-circumscribed intramuscular masses, hypointense on T1-weighted and hyperintense on T2-weighted images. Eleven masses were homogeneous and seven slightly heterogeneous due to fibrous septa. Enhanced MR imaging demonstrated three different patterns: peripheral enhancement (n=1), peripheral and patchy internal enhancement (n=7) or peripheral and linear internal enhancement (n=4). Intratumoral cysts were detected in four masses. MR imaging showed the presence of a pseudocapsule (n=12), fat around the lesion (n=16) and peritumoral edema (n=16). Histologically, all the tumors were hypocellular, hypovascular and myxoid. Peripheral areas of collagenous fibers formed a partial capsule and IM often merged into surrounding muscular fibers. More cellular tumors and those with scanty myxoid stroma tended to show a more prominent internal enhancement. CONCLUSION: IM shows several recognizable MR features which suggest its diagnosis.

Duke Scholars

Published In

Skeletal Radiol

DOI

ISSN

0364-2348

Publication Date

January 2005

Volume

34

Issue

1

Start / End Page

19 / 28

Location

Germany

Related Subject Headings

  • Thigh
  • Retrospective Studies
  • Nuclear Medicine & Medical Imaging
  • Myoma
  • Muscle Neoplasms
  • Muscle Fibers, Skeletal
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging
  • Image Enhancement
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Luna, A., Martinez, S., & Bossen, E. (2005). Magnetic resonance imaging of intramuscular myxoma with histological comparison and a review of the literature. Skeletal Radiol, 34(1), 19–28. https://doi.org/10.1007/s00256-004-0848-9
Luna, A., S. Martinez, and E. Bossen. “Magnetic resonance imaging of intramuscular myxoma with histological comparison and a review of the literature.Skeletal Radiol 34, no. 1 (January 2005): 19–28. https://doi.org/10.1007/s00256-004-0848-9.
Luna, A., et al. “Magnetic resonance imaging of intramuscular myxoma with histological comparison and a review of the literature.Skeletal Radiol, vol. 34, no. 1, Jan. 2005, pp. 19–28. Pubmed, doi:10.1007/s00256-004-0848-9.
Journal cover image

Published In

Skeletal Radiol

DOI

ISSN

0364-2348

Publication Date

January 2005

Volume

34

Issue

1

Start / End Page

19 / 28

Location

Germany

Related Subject Headings

  • Thigh
  • Retrospective Studies
  • Nuclear Medicine & Medical Imaging
  • Myoma
  • Muscle Neoplasms
  • Muscle Fibers, Skeletal
  • Middle Aged
  • Male
  • Magnetic Resonance Imaging
  • Image Enhancement