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Rectus abdominis rhabdomyolysis after sit ups: unexpected detection by bone scan.
  1. P F Kao,
  2. K Y Tzen,
  3. J Y Chen,
  4. K J Lin,
  5. M F Tsai,
  6. T C Yen
  1. Department of Nuclear Medicine, Chang Gung Memorial Hospital, School of Medicine, Chang Gung University, Taipei, Taiwan, Republic of China.


    Uptake of technetium-99m methylene diphosphonate by the rectus abdominis muscle was unexpectedly found in a 29 year old man who had started to perform 30 to 40 sit ups a day for five days before the bone scan. After a week of rest, serum creatine kinase activity was still abnormal but muscle uptake of technetium-99m methylene diphosphonate had ceased. This specific muscle injury after short term sit ups as well as the resolution of the phenomenon within a week are of interest.

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