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Case report. Chemical-shift MRI of exogenous lipoid pneumonia
J E Cox1, R H Choplin, C Chiles
1Department of Radiology, Bowman Gray School of Medicine, Wake Forest University, Winstom-Salem, NC 27157-1088, USA.
Abstract:
Exogenous lipoid pneumonia results from the aspiration or inhalation of fatty substances, such as mineral oil found in laxatives or nasal medications containing liquid paraffin. We present standard and lipid-sensitive (Chemical-shift) MR findings in a patient with histologically confirmed lipoid pneumonia. The loss of signal intensity in an area of airspace disease on opposed-phase imaging was considered specific for the presence of lipid.
Insights
Exogenous lipoid pneumonia is caused by inhaling fatty substances. Chemical-shift MRI can identify lipid in the lungs, aiding diagnosis.
Area of Science:
- Radiology
- Pulmonology
- Pathology
Background:
- Exogenous lipoid pneumonia arises from aspirating or inhaling lipids like mineral oil or liquid paraffin.
- These substances are commonly found in laxatives and nasal medications.
Observation:
- This study details the magnetic resonance (MR) imaging findings in a patient with confirmed lipoid pneumonia.
- Both standard and lipid-sensitive (chemical-shift) MR techniques were employed.
Findings:
- A specific finding was the loss of signal intensity on opposed-phase imaging within the affected airspace.
- This signal loss is indicative of lipid presence, confirming the diagnosis.
Implications:
- Chemical-shift MRI offers a non-invasive method for detecting lipid in lung diseases.
- This technique can aid in the diagnosis of exogenous lipoid pneumonia.