Negative-Pressure Suction Cannula for Treatment of Lactational Residual Milk Cavity: A Case Series Study

Several Chinese mothers experience problems related to their breasts during breastfeeding and are referred to hospitals for treatment after a massage by a "cuirushi." Some of these patients develop large breast abscesses. Notably, the treatment of residual milk cavities is difficult after pus aspiration. Lactational residual milk cavities in the breast hinder effortless breastfeeding, but no solution has been reported thus far. This study aims to explore the use of a simple and minimally invasive method for treating lactational residual milk cavities and enabling mothers to breastfeed effortlessly. We retrospectively analyzed clinical data of 28 patients with lactational residual milk cavities treated using negative-pressure suction cannula and drainage at our department from December 2016 to May 2019. The success rate, safety, and feasibility of this technique are summarized. Among the 28 patients, the first catheterization was successful in 7 (25%) patients, the second in 13 (46.4%) patients, and the third or subsequent catheterizations in 8 (28.6%) patients. The intubation time was <10 days in 3 patients, between 10 and 20 days in 12 patients, and >20 days in 13 patients. During and after treatment, 21 patients (75%) continued breastfeeding with the affected breast. Ultrasound-guided negative-pressure suction cannula is a new method to treat lactational residual milk cavities that may remain after initial therapy for lactational breast abscess. The treatment of lactational residual milk cavities offers significant advantages in supporting mothers during breastfeeding.