RESUMO
Objective To investigate X-ray manifestations of mammary hamartoma and its pathologic basis.Methods 19 cases were proved by surgery and pathology,X-ray and pathologic manifestations were analyzed.All cases were examined with full digital mammography.Results X-ray manifestations of mammary hamartomas were divided into three types,including fat type were in 5 cases;dense type were in 4 cases and mixed type were in 10 cases.The lumps were surrounded by a true capsule in pathology,they were made up of different amount of rambling mammary ducts,lobules,adipose and fibrous tissue.Conclusion X-ray manifestations of mammary hamartoma are varied,depending on the proportion of the adipose tissue,gland and fibrous tissue.Mixed density lump is the characteristic sign of this disease.