1 From the *Department of Nuclear Medicine, Kaohsiung Veterans General Hospital, Kaohsiung; and †School of Medicine, National Yang-Ming University, Taipei, Taiwan, Republic of China.
This report describes a 19-year-old man with interruption of the inferior vena cava with azygos continuation. Both radionuclide venography and MRI clearly showed venous return of the lower limbs through prominent collateral systems.