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Gallium-67 Citrate Scanning—A New Adjunct in the Detection and Follow-up of Extrapulmonary Tuberculosis: Concise Communication

Wayne County General Hospital, Eloise, Michigan

Correspondence: For reprints contact: Salil Sarkar, Nuclear Medicine Sec., Wayne County General Hospital, Eloise, MI 48132.

ABSTRACT

Gallium-67 citrate scans were obtained in 11 patients considered at risk for extrapulmonary tuberculosis. Radiographic and bacteriologic studies were performed routinely and tissue biopsy selectively. Of five patients with proven extrapulmonary tuberculosis, there were three with renal tuberculosis, one with Pott's disease, and one with peritoneal tuberculosis. The Ga-67 scan correctly predicted presence or absence of active extrapulmonary foci in all 11 patients. Follow-up scans correlated well with clinical response to therapy. The diagnosis of extrapulmonary tuberculosis is often overlooked because of nonspecific symptoms and frequent lack of concurrent lung involvement. Scanning with Ga-67 citrate offers a reliable and simple means of screening patients at risk and of monitoring response to treatment.