Abstract
2007
Introduction: Sarcoidosis is a chronic non-caseating granulomatous multisystemic disease with variable clinical and imaging features which may mimic many other conditions including malignancy. Late detection or misdiagnosis may lead to unfavorable outcomes. Recognition of features indicating sarcoidosis on FDG PET/CT is important to avoid misinterpretation and avoid unnecessary invasive management and enhance timely delivery of high-quality care.
Objectives: Our aim is to present FDG PET/CT imaging findings in biopsy proven cases of sarcoidosis to elicit common imaging patterns as well as some rare imaging features of sarcoidosis. Imaging findings of cardiac sarcoidosis are also included for completeness.
Methods: Images of patients that underwent FDG PET/CT scanning for oncological indications or cardiac PET/CT for cardiac sarcoidosis are presented. Patients charts were reviewed to confirm histologic diagnosis of sarcoidosis. Following deidentification, images from several cases are presented in this report for educational purpose.
Conclusions: Sarcoidosis is a multiorgan disease with bizarre features. Recognition of the characteristic imaging pattern on FDG PET/CT is essential for appropriate scan interpretation and will facilitate timely diagnosis and subsequent management of this complex condition.