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Increased Fluorodeoxyglucose Uptake in a Calf Opposite to a Leg With Osteosarcoma After Operation

FUJII, HIROFUMI, M.D.*†; YASUDA, SEIEI, M.D.*; IDE, MICHIRU, M.D.*; TAKAHASHI, WAKOH, M.D.*; MOCHIZUKI, YUKIHITO, M.D.*; SHOHTSU, AKIRA, M.D.*; NAKAHARA, TADAKI, M.D.; KUBO, ATSUSHI, M.D.

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A 19-year-old man with osteosarcoma in the left tibia underwent resection of the primary tumor and partial transplantation of the right fibula to the defect of the left tibia. Although his postoperative course was good, he gradually came to feel fatigue and pain in his right lower leg when he walked. One year later, he underwent fluorine-18 fluorodeoxyglucose (F-18 FDG) positron emission tomography (PET). No visible accumulation was noted in the surgically treated left lower leg. But F-18 FDG showed marked accumulation in the right calf muscles. This paradoxical FDG accumulation would explain the easy fatigability and the muscular pain.

From the HIMEDIC Imaging Center at Lake Yamanaka,* Yamanashi, and Department of Radiology,† Keio University School of Medicine, Tokyo, Japan

Received for publication August 31, 1999.

Accepted October 26, 1999.

Reprint requests: Hirofumi Fujii, M.D., Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan. E-mail: fujii@rad.med.keio.ac.jp

© 2000 Lippincott Williams & Wilkins, Inc.