Increased Uptake in Tc-99m MDP Scan of Sacral Chordoma: An Unusual PresentationTrikha, Vivek, MBBS, MS*; Gupta, Vikas, MBBS, MS*; Kumar, Rakesh, MBBS, MD†Clinical Nuclear Medicine: September 2004 - Volume 29 - Issue 9 - p 562-563 doi: 10.1097/01.rlu.0000134984.93426.8e Interesting Image Buy Abstract Author InformationAuthors Article MetricsMetrics Chordoma is a malignant tumor arising from the remnants of the notochord. Approximately 50% of chordomas occur in the sacrococcygeal region. They are most common in the 50- to 60-year age group, and in men rather than in women. The earliest and most common symptom of sacral chordoma is sacral pain radiating to the legs. Other complaints include constipation and presence of a mass. The authors present a case of histologically proved sacral chordoma with bowel and bladder involvement. Most sacral tumors show increased uptake on radionuclide scintigraphy except chordomas, which usually have decreased uptake. This case is presented keeping in view its unusual bone scan features. From the *Department of Orthopaedics and the †Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, India. Received August 9, 2003; revision accepted December 31, 2003. Reprints: Dr. Vikas Gupta, Department of Orthopaedics, All India Institute of Medical Sciences, New Delhi, India. E-mail: email@example.com © 2004 Lippincott Williams & Wilkins, Inc.