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FDG PET/CT Findings in a Case of Myositis Ossificans Circumscripta of the Forearm

Clarençon, Frédéric, MD*; Larousserie, Frédérique, MD; Babinet, Antoine, MD; Zylbersztein, Christophe, MD§; Talbot, Jean-Noël, MD, PhD*; Kerrou, Khaldoun, MD*

doi: 10.1097/RLU.0b013e3181feed95
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Myositis ossificans circumscripta (MOC) is a rare benign neoplasm located in soft tissues that, most of the time, appears after a local trauma. The positive diagnosis of MOC may be challenging on CT or MRI findings. We report on an atypical case of a spontaneous nontraumatic MOC in a 54-year-old man, located in the longus supinatus muscle diagnosed with MRI and F-18 FDG PET/CT findings. Rarely described F-18 FDG PET/CT features in MOC are presented. Pattern of avid FDG focus on PET/CT, that may wrongly suggest osteosarcoma, is presented.

From the *Department of Nuclear Medicine, Hôpital Tenon, APHP, Paris, France; Departments of †Anatomo-Pathology and ‡Orthopedics, Hôpital Cochin, APHP, Paris, France; and §Department of Radiology, Polyclinique Saint-Claude, St-Quentin, France.

Received for publication February 15, 2010; revision accepted September 20, 2010.

Reprints: Frédéric Clarençon, MD, Department of Nuclear Medicine, Tenon Hospital 4, Rue de la Chine, 75020, Paris, France. E-mail: fredclare5@msn.com.

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