Although plasma cell mastitis is a relatively uncommon disease, it is important because of its clinical resemblance to carcinoma of the breast. The resemblance is so close, as a matter of fact, that in at least half of the recorded cases primary radical mastectomy was performed, on the assumption that the inflammatory swelling was malignant.
This clinical entity (we are among those who accept it as such) was first described under the name plasma cell mastitis by Adair1 in 1933. Prior to his contribution, as Payne and his associates2 have pointed out, the condition was described in the German literature under the term mastitis obliterans, and it is possible that it has also been discussed under still other designations. The indolent form of mastitis, described by Bell3 as pseudotuberculosis, seems to be this same disease. Adair's contribution, however, is so outstanding that the term plasma cell mastitis
PARSONS WH, HENTHORNE JC, CLARK RL. PLASMA CELL MASTITISREPORT OF FIVE ADDITIONAL CASES. Arch Surg. 1944;49(2):86-90. doi:10.1001/archsurg.1944.01230020091002