To achieve a close relationship among Gomel Regional Hospital (Gomel, Belarus), Belarusian Children Center of Hematology/Oncology (Minsk, Belarus) and Shinshu University Hospital, we established a telemedicine system using the Inmarsat satellite. The system consists of a TV conference system, a digital microscopic imaging system and a high-definition image server/viewer network system (DICOM). The detailed case conference is possible among three areas of physicians.