Abstract: This article reports the whole-body ¹⁸F-fluorodeoxyglucose (FDG) PET/CT imaging of a patient who suffering primary adrenal lymphoma (PAL) complicated with hepatocellular carcinoma. PAL is relatively rare in clinical practice, and it is easy to be misdiagnosed as metastasis when patients have other malignant tumors.This article mainly analyzes the imaging characteristics of whole body ¹⁸F-FDG PET/CT in PAL complicated with hepatocellular carcinoma, in order to provide more reference for its diagnosis.