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KMID : 1148920180520020162
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Nuclear Medicine and Molecular Imaging
2018 Volume.52 No. 2 p.162 ~ p.165
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Focal Increased Tc-99m MDP Uptake in the Nutrient Foramen of the Femoral Diaphysis on Bone SPECT/CT
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Cha Hwa-Jin
Park Soo-Bin
Kim Hyun-Joo
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Abstract
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We present images of an 83-year-old female with a history of osteoporosis and bilateral total knee replacement arthroplasty, referred for bone scintigraphy and single-photon emission computed tomography (SPECT)/computed tomography (CT), owing to left knee pain. No trauma to, or intense exercise of, the knee was reported. The bone scan and SPECT/CT revealed a focally increased Tc-99m methylene diphosphonate (MDP) uptake in the medial cortex of the left femoral diaphysis with matched linear radiolucency on CT images. This was misinterpreted as atypical femoral stress fracture; however, focal stress reaction injury to the nutrient foramen was confirmed on contrast-enhanced magnetic resonance imaging.
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KEYWORD
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Tc-99m MDP, Bone scan, SPECT, SPECT/CT, Nutrient foramen
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