18F-FDG positron emission tomography computed tomography and the "underground map" appearance in imaging Horton's arteritis

Abdul Jalil N, Abdul Rahim N, Md Shalleh N, Rossetti C
Correspondence: Dr Noraini Abdul Rahim, norainichoo2@hotmail.com

ABSTRACT
A majority of the clinical use of positron emission tomography (PET)-computed tomography (CT) is related to cancer management. Its application in evaluating inflammatory diseases and pyrexia of unknown origin is becoming popular. We reviewed the fluorine-18-fluorodeoxyglucose PET-CT findings of an 80-year-old woman with nonspecific clinical presentation consisting of generalised malaise, moderately high fever and weight loss. Prior CT and magnetic resonance imaging were not helpful in providing a clinical diagnosis. The diagnosis was Horton's arteritis, and the patient responded well to high-dose steroids.

Keywords: arteritis , fluorine-18-fluorodeoxyglucose positron emission tomography, Horton’s arteritis, hybrid imaging, positron emission tomography
Singapore Med J 2008; 49(7): e178-e182