A case of three primary malignancies in one patient is rare. We report on a case of three primary malignancies including myxofibrosarcoma, renal cell cancer, and prostate cancer in one 18F-fluorodeoxyglucose (FDG) positron emission tomography/ computed tomography (PET/CT) evaluation of a 75-year-old man. PET/CT showed different FDG meabolism in each tumor.

Introduction
 Case report
 Discussion
 Acknowledgments
 References

• Ari Chong(Department of Nuclear Medicine, Chosun University Hospital)
• Jung Min Ha(Department of Nuclear Medicine, Chosun University Hospital)
• Jin Suk Kim(Department of Nuclear Medicine, Konyang University Hospital)
• Young Chul Kim(Department of Nuclear Medicine, Chosun University Hospital) Corresponding author