67Ga-Citrate Uptake by the Parotid Glands in Sarcoidosis

Abstract

Bilateral accumulation of 67Ga-citrate by the parotid glands was observed in 9 of 27 patients (33%) with sarcoidosis and in a subgroup of 12 with systemic symptoms, e.g., fever or clinically acute, progressive disease (75%). Asymptomatic patients or those with probable sarcoidosis associated with hilar and/or paratracheal adenopathy will not have parotid uptake. Uptake seldom occurs in normal patients or in those with untreated lymphoma or Hodgkin disease. If other inflammatory or granulomatous processes such as tuberculosis can be excluded and if there is no history of head and neck irradiation, then this finding in acutely ill patients suggests sarcoidosis.