Intense increased FDG uptake in the skeletal muscles probably due to exercise

Case contributed by Dr Jayanth Keshavamurthy


PET-CT performed for evaluation of enlarged mediastinal lymph nodes.

Patient Data

Age: 50 years
Gender: Male

There is diffusely increased metabolic activity in the skeletal muscles of the chest, arms, abdomen, and proximal thighs. It is most likely that the patient was doing heavy exercise the night before the PET-CT. It does not fit with brown fat uptake in these locations.

Case Discussion

Patients should be told to avoid strenuous and intense exercise for the 24-48 hours prior to a PET-CT/PET-MRI.

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Case information

rID: 72479
Published: 26th Nov 2019
Last edited: 27th Nov 2019
Inclusion in quiz mode: Excluded
Institution: Augusta University

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