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Radiological reasoning: bone marrow changes on MRI.

Paul G Swartz¹, Catherine C Roberts

¹Department of Radiology, Mayo Clinic, 5777 E Mayo Blvd., Phoenix, AZ 85054, USA.

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|August 22, 2009

Summary

This summary is machine-generated.

Magnetic resonance imaging (MRI) can help differentiate bone marrow changes. Opposed-phase imaging may show false positives due to fibrosis mimicking cancer, requiring biopsy for diagnosis.

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Area of Science:

Radiology
Oncology
Pathology

Background:

Differentiating neoplastic from nonneoplastic bone marrow lesions using imaging is difficult.
Magnetic resonance imaging (MRI), particularly with T1-weighted and opposed-phase sequences, offers valuable insights.
Assessing bone marrow pathology requires careful interpretation of imaging findings.

Observation:

A complex clinical case involving bone marrow changes was analyzed.
Magnetic resonance imaging (MRI) was utilized for bone marrow assessment.
Opposed-phase imaging presented a specific challenge in this case.

Findings:

The case demonstrated a false-positive result on opposed-phase MRI of the bone marrow.
Postinflammatory changes led to marrow fibrosis, mimicking neoplastic infiltration.
Histopathological examination (biopsy) was necessary for accurate diagnosis.

Implications:

This case highlights the potential for false-positive findings in bone marrow MRI, specifically with opposed-phase sequences.
Marrow fibrosis from non-neoplastic causes can mimic malignancy on imaging.
Biopsy remains crucial for definitive diagnosis when imaging findings are equivocal for bone marrow lesions.