F-18 FDG PET/CT Monitoring of Radiation Therapeutic Effect in Hepatic Epithelioid Hemangioendothelioma

We report the F-18 FDG PET/CT findings in a 59-year-old man with a rare hepatic tumor of malignant epithelioid hemangioendothelioma, who was treated with radiotherapy (RT). This patient had multifocal discrete hepatic tumors, and PET/CT images showed intense FDG uptake in these nodules, regardless of poor enhancement on contrast-enhanced computed tomography. Seven months after RT to the 2 relatively large nodules, the intense FDG uptake disappeared in these nodules, while the remaining untreated nodule showed persistently intense uptake. RT is one of the options for treatment of hepatic epithelioid hemangioendothelioma. F-18 FDG PET/computed tomography appears to be useful for monitoring the effect of RT in this neoplasm.