原发性乳腺淋巴瘤(primary breast lympho-ma,PBL)极为少见,多发生于右侧乳腺,占结外淋巴瘤的1.7%～2.2%,在NHL中占0.38%～0.7%,在所有乳腺的恶性肿瘤中占0.4%～0.5%。文献报道,PBL平均发病年龄为60～65岁,几乎都在女性中发生,11%PBL患者有双侧乳腺累及,这种疾病尤其见于怀孕期及产后妇女,提示肿瘤生长 Primary breast lympho-ma (PBL) is extremely rare, mostly in the right breast, accounting for 1.7% ~ 2.2% of extranodal lymphoma, accounting for 0.38% ~ 0.7% in NHL. In all breasts Of malignant tumors accounted for 0.4% to 0.5%. It has been reported in the literature that the average age of onset of PBL is 60-65 years old and occurs in almost all women, with bilateral breast involvement in 11% of PBL patients, especially in pregnant and postnatal women, suggesting tumor growth