Strain or avulsion injury of the proximal tendon of the rectus femoris muscle can lead to increased FDG activity at the level of the anterior inferior iliac spine and superior acetabular ridge. Recognition of this entity can help avoid confusion for neoplasm on PET and offer a non-neoplastic etiology for pain in this region.
References
Sopov V, Bernstine H, Stern D, Yefremov N, Sosna J, Groshar D. Spectrum of focal benign musculoskeletal 18F-FDG uptake at PET/CT of the shoulder and pelvis. AJR Am J Roentgenol. 2009 Apr;192(4):1029-35.
Strain or avulsion injury of the proximal tendon of the rectus femoris muscle can lead to increased FDG activity at the level of the anterior inferior iliac spine and superior acetabular ridge. Recognition of this entity can help avoid confusion for neoplasm on PET and offer a non-neoplastic etiology for pain in this region.
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