February 2019, Volume 69, Issue 2

IMAGING CORNER

Unusual Pattern of Femoral Head Avascular Necrosis on Bone Scintigraphy

Saima Riaz  ( Department of Nuclear medicine, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan. )
Aamna Hassan  ( Department of Nuclear medicine, Shaukat Khanum Memorial Cancer Hospital and Research Centre, Lahore, Pakistan. )

Abstract

Avascular necrosis/osteonecrosis of femoral head is demonstrated as a photopenic area on bone scintigraphy. We report a case with an unusual pattern of femoral head avascular necrosis on Tc99m MDPb one scintigraphy. A 46-year-old man, with diagnosed squamous cell carcinoma of lung, presented with 3 months history of right hip pain. Bone scan revealed a large photon deficient area involving the right femoral head with extension to the right trochanteric region.Trochanteric involvement is not typically seen. On correlative MRI scan the findings in the right proximal femur were labeled as earl avascular necrosis.
Keywords: Avascular necrosis, osteonecrosis, Tc99m MDP bone scintigraphy.

References

1. Boraiah S, Dyke JP, Hettrich C, Parker RJ, Miller A, Helfet D, et al. Assessment of vascularity of the femoral head using gadolinium (Gd-DTPA)-enhanced magnetic resonance imaging: a cadaver study. J Bone Joint Surg Br 2009; 91:131-7.
2. Macleod MA, Houston AS: Functional bone imaging in the detection of ischemic osteopathies. ClinNucl Med 1997; 22:1-5.
3. Or ban HB, Cristescu V, D ragusanu M. Avascular nec rosis of the femoral head. Maedica-J Clin Med 2009; 4: 26-34.

 

Journal of the Pakistan Medical Association has agreed to receive and publish manuscripts in accordance with the principles of the following committees: