Cortical Desmoid Tumour
Benign bone abnormality related to repetative stress
Quick Facts
Behaviour
Benign
Category
Bone
Category
Bone
Behaviour
Benign
Gender
Male (3:1)
Tissue of Origin
Periosteum at the site of repetitive avulsive stress
Epidemiology
Found in up to 11.5% of boys and 3.6% of girls between the ages of 10 and 15
Clinical Features
Usually asymptomatic and discovered incidentally on imaging. Occasionally presents with localized activity-related pain
Location
Classically the posteromedial cortex of the distal femoral metaphysis (medial supracondylar ridge)
Imaging
- Plain radiograph: Shallow, saucer-like cortical excavation with a sclerotic (white) border
- MRI: T2-hyperintense with a peripheral rim of low signal (sclerosis); may show "tug" appearance at the tendon insertion
Pathology
Benign fibrous tissue, fibroblasts, and reactive bone
Genetics
No known genetic associations or mutations
Treatment
Observation only
Prognosis
Excellent; benign lesion that typically resolves by adulthood
Key Points
- Benign bone abnormality related to repetative stress
- Diagnosis is almost always made based on its characteristic location and appearance on X-ray/MRI
Workup - Blood Tests
No blood tests required
Workup - Local Imaging
- Plain radiograph
- MRI if diagnosis uncertain
Workup - Biopsy
None
Workup - Staging
No staging required
Follow-up Summary
- 1
Consider repeat x-ray in 6 months to confirm staic appearance, then discharge
Medical disclaimer
The content on Sarcopedia is for educational and informational purposes only and does not constitute medical advice. It is not intended to be a substitute for professional medical diagnosis or treatment. Always consult with a qualified physician regarding any health concerns or before starting any new treatment. Reliance on any information provided on this site is solely at your own risk.