%0 Journal Article %T Multiple Brown Tumors in a Patient with Parathyroid Adenoma Depicting Affinity for both 99mTc -Pertechnetate and 99mTc-MIBI: Evaluation with Hybrid SPECT/CT %A CNB Harisankar %J Iranian Journal of Nuclear Medicine %D 2012 %I %X Parathyroid adenoma involving a single parathyroid gland is the underlying cause of 80-85% of primary hyperparathyroidism (PHPT). Skeletal system is significantly affected by PHPT. Brown tumors are known to have affinity for 99mTc-MIBI. We report a rare case of PHPT presenting with diffuse bony pain, high calcium level and significantly elevated alkaline phosphatase level. 99mTc-pertechnetate/99mTc-MIBI subtraction, performed as a part of routine protocol, showed several brown tumors showing affinity for both 99mTc-pertechnetate and 99mTc-MIBI. They were further characterized using hybrid SPECT/CT. To the best of our knowledge, 99mTc-pertechnetate affinity in brown tumors has not been previously described. %K 99mTc-MIBI %K Brown Tumor %K SPECT/CT %K Techentium %K Parathyroid Adenoma %K Primary Hyperparathyroidism %U http://irjnm.tums.ac.ir/?_action=showPDF&article=1211&_ob=bc22bf703bdb6976e7d0dafc4145880d&fileName=full_text.pdf