Ectopic intrathoracic kidney is rare and usually causes no symptoms. It is most often discovered as a posterior mediastinal or juxtadiaphragmatic mass by chest radiograph Intravenous pyelogram or sonography allow differentiation from significant lesions thus avoiding surgery or biopsy. We have experienced a case of ectopic intrathoracic kidney that was diagnosed by sonog-raphy intravenous pyelogram DMSA scan and aortogram