Abstract: Objective To investigate the clinical efficacy of minimally invasive mammotome biopsy,open surgery and puncture drainage in the treatment of plasmacytic mastitis at abscess stage.Methods A total of 90 patients with plasmacytic mastitis in abscess stage were selected and divided into three groups according to different treatment methods from January 2018 to July 2021:minimally invasive group (n=38),minimally invasive mammotome biopsy;In the open group,30 patients underwent conventional open surgery.In the puncture group,22 cases were treated with percutaneous puncture.The perioperative indicators,treatment effect satisfaction,and the recurrence rate after 1 year follow-up were compared and analyzed among the three groups. Results The operative time (17.92±4.44)min,incision length (0.37±0.06)cm,incision healing time (5.84±1.90)d and intraoperative blood loss (5.79±2.61)ml were shorter in the minimally invasive group than in the open group,and the differences were statistically significant (P<0.05).The satisfaction of treatment effect in minimally invasive group (89.47%) was better than that in open group (73.33%) and puncture group (54.55%),and the recurrence rate after 1 year follow-up in minimally invasive group (7.89%) was lower than that in open group (26.67%) and puncture group (36.36%),and the difference was statistically significant (P<0.05).Conclusion In view of the abscess period of plasma cell mastitis treatment,ultrasonic guided minimally invasive mammotome biopsy could easily be accepted by patients for its advantages,including small incision,small trauma,high patient satisfaction,short treatment period,high cure rate and beautiful appearance,the operation is simple and with a minimally invasive treatment,treatment effect is worth clinical promotion.

Key words: plasma cell mastitis, abscess, minimally invasive mammotome biopsy, open surgery, puncture drainage