This pathology laboratory data management system is developed at the department of pathology and laboratory medicine, College of Medicine, Korea University, as an extension of Korea University laboratory Data managment and communication system. This is built in hospital computer for business, with the connection to the hospital business information system by software. The pathology department is only using terminals and printers, which enables us to maintain the lowest cost to maintain and operate the system. It has been written in COBO1 and utilized TOTAL Data Base and SNOMED (microglossary for surgical pathology). The input keys include patient hospital registration number, laboratory test code and SNOMED code or direct English written diagnostic words through dual masters of SNOMED.