Advertisement

Skeletal Radiology

, Volume 38, Issue 1, pp 69–69 | Cite as

MR features of a giant cyamella in a patient with osteoarthritis

  • Peter L. MunkEmail author
  • Abdulrhaman Althathlol
  • Faisal Rashid
  • David Malfair
Test Yourself: Question

History

A 66-year-old man presented with chronic left knee pain accompanied by instability and locking. A magnetic resonance imaging study was performed, which demonstrated extensive degenerative changes with osteophytosis, cartilage loss, and meniscal damage as well as disruption of the anterior cruciate ligament (Fig. 1). At the posterior aspect of the knee, adjacent to the posterior lateral tibial margin, and medial to the fibular head, a structure was identified surrounded by fibers of the musculotendinous junction of the popliteus muscle. What is your diagnosis?
Fig. 1

a Sagittal pelvic diaphragm magnetic resonance image demonstrating an ossific corticated body at the popliteus musculotendinous junction consistent with a cyamella. b Coronal STIR and c axial FSET2 images demonstrating suppression of the fatty marrow signal from within the cyamella

Copyright information

© ISS 2008

Authors and Affiliations

  • Peter L. Munk
    • 1
    Email author
  • Abdulrhaman Althathlol
    • 1
  • Faisal Rashid
    • 1
  • David Malfair
    • 1
  1. 1.Vancouver Hospital and Health Sciences CentreUniversity of British ColumbiaVancouverCanada

Personalised recommendations