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LIPOID PNEUMONIA
Authored By: Tom Miller and Brandon Peters.
Patient: 59 year old female
History: 59 year-old female with a mass demonstrated in the lingular portion of the left upper lobe.
Image Size:[small][as-submitted]

Fig. 1
Coronal whole body PET images demonstrate no gross abnormalities

Fig. 2
PET, CT, and fused images demonstrating a lingular mass with mild tracer uptake.

Fig. 3
Non-contrast CT image in lung windows demonstrates spiculated lingular mass

Fig. 4
Non-contrast axial CT image demonstrating lingular mass containing fat.

Fig. 5
Non-contrast axial CT image demonstrating lingular mass containing fat.

Fig. 6
Non-contrast axial CT image demonstrating lingular mass containing fat.

Fig. 7
Non-contrast axial CT image demonstrating lingular mass containing fat.
Image Size:[small][as-submitted]

Findings: 2.4 cm spiculated mass in the lingula with a maximum standardized uptake value (SUV) of 1.8.   
Diagnosis: Lipoid Pneumonia
General Discussion: The PET/CT demonstrates a spiculated low density mass in the lingula adjacent to the left side of the heart with mild tracer uptake (maximum SUV 1.8).  Although a benign etiology was suspected, low grade malignancy was not excluded based on the PET data alone.  A follow-up diagnostic CT was performed in preparation for biopsy of the mass  which demonstrated multiple areas of macroscopic fat in the lesion.    The patient was questioned and reported a history of consitipation and use of mineral oil ingestion.  Thus, this lesion is consistent with lipoid pneumonia and no biopsy is necessary.
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Additional Details:

Case Number: 206892Owner(s): Tom Miller and Brandon PetersLast Updated: 12-07-2011
Anatomy: Cardiopulmonary   Pathology: Non-Infectious Inflammatory Disease
Modality: PETAccess Level: Readable by all users, writable by NucMed Certifiers
Keywords: ptnm, lipoid pneumoniaACR: 60000.56000

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Certified by Tom Miller on 04-16-2007

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