OBJECTIVETo explore the clinical features, diagnosis and treatment of primary breast diffuse large B- cell lymphoma (PBDLBCL).

METHODSClinical records of 9 PBDLBCL patients treated in Department of Hematology of Yijishan Hospital Affiliated to Wannan Medical College from August 2001 to January 2014 were analyzed retrospectively.

RESULTSAll of the 9 patients were female, with an average age of 48 years (range 28 to 75), 8 cases had unilateral breast tumors and 1 case had bilateral. According to the Ann Arbor stage standard, 2 cases were of stage IE and 7 were IIE. None of them was concurrent with B symptoms; 6 cases had IPI (International prognostic Index) score 0 and 3 had score 1. 2 cases belonged to germinal center B cells type (GCB) and 7 belonged to non-GCB. Double-Hit lymphomas were presented in 3 cases. Out of 9 cases, 3 cases were diagnosed by using tubular needle biopsy, 5 cases were diagnosed by using resection of breast mass, and 1 case was diagnosed by using modified radical mastectomy. 1 case received radical mastectomy, 1 case received unilateral breast removal, 1 case gave up, 1 case received mass excision with chemotherapy and radiotherapy, 5 cases received mass excision with chemotherapy and 1 case received central prophylaxis. A complete response (CR) was observed in 6 cases after first-line chemotherapy. The median follow-up time was 18 months (range 0.1 to 150), 3 cases relapsed and 5 cases died.

CONCLUSIONPBDLBCL mostly occurs in female. The main pathological type is non-GCB coupled with Double-Hit lymphoma. Tubular needle biopsy offers benifit in the diagnosis of PBL, R-CHOP or R-CHOP combined with chemotherapy/radiotherapy produce best outcome among all the treatments. Intrathecal injection of chemotherapy drugs may help to prevent recurrence of PBL central.