FDG PET/CT findings of relatively rare adrenal tumors

Learning Objectives 1. Review the FDG PET/CT findings of relatively rare adrenal tumors with correlation to histopathological findings and other imaging modalities. 2. Describe the properties and limitations of FDG PET/CT in the evaluation of the relatively rare adrenal tumors.

Although FDG PET/CT is useful for differentiating malignant from benign adrenal tumors in most cases, a part of benign adrenal tumors may present high FDG uptake and a part of malignant adrenal tumors may present low FDG uptake. This exhibit demonstrates a pictorial review of FDG PET/CT findings of relatively rare adrenal tumors including adrenocortical carcinoma, pheochromocytoma, ganglioneuroma, neuroblastoma, leiomyosarcoma, lymphoma, myelolipoma, adrenal cyst, adrenal hematoma, adrenal metastasis with low FDG uptake and so on, with correlation to the histopathological findings and other imaging modalities. To know the properties, pitfalls, and limitations of FDG PET/CT is important to improve confidence and accuracy in interpreting relatively rare adrenal tumors