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A Restless Leg Syndrome Incidentally Detected by an 18F-FDG Positron Emission Tomography

Ohnona, Jessica MD; Metlaine, Arnaud MD; Leger, Damien PhD; Talbot, Jean-Noël PhD

doi: 10.1097/RLU.0000000000001583
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A case of a restless leg syndrome (RLS) was incidentally detected in a 49-year-old woman referred for an 18F-FDG PET/CT in monitoring her breast cancer. She was treated with chemotherapy and on long-term hormone therapy. Diffuse 18F-FDG uptake of calf muscles was visualized. Medical history revealed that the patient felt leg cramps in supine position, suggesting RLS. The diagnosis was confirmed using clinical rating scales and polysomnography. RLS being underdiagnosed, this type of FDG PET/CT incidental finding should prompt to check the presence of evocative symptoms and refer the patient to a physician specialized in sleep disorders.

From the *Hôpitaux Universitaires Est Parisien, AP-HP Hôpital Tenon, Nuclear Medicine Department & Université Pierre et Marie Curie Paris 06; and †Université Paris Descartes, AP-HP, Hôpitaux Universitaires Paris Centre, Hôpital Hôtel-Dieu, Centre du sommeil et de la Vigilance & EA 7330 VIFASOM, Paris, France.

Received for publication November 28, 2016; revision accepted December 23, 2016.

Conflicts of interest and sources of funding: none declared.

Correspondence to: Jessica Ohnona, MD, Hôpitaux Universitaires Paris Est, Assistance Publique–Hôpitaux de Paris, Hôpital Tenon, Service de Médecine Nucléaire, 4, rue de la Chine, 75020 Paris, France. E-mail: jessica.ohnona@aphp.fr.

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