RT Journal A1 Bland KI T1 Injection site mass following sentinel node biopsy for breast cancer: Comment on “occurrence of prolonged injection site mass with methylene blue but not isosulfan blue after sentinel node procedure” JF Archives of Surgery JO Archives of Surgery YR 2011 FD February 1 VO 146 IS 2 SP 142 OP 142 DO 10.1001/archsurg.2010.322 UL http://dx.doi.org/10.1001/archsurg.2010.322 AB Shirah, Bouton, and Komenaka, of the Maricopa Medical Center in Phoenix, Arizona, distinguish the advantages of isosulfan blue and methylene blue in the use of sentinel lymph node procedures for breast cancer. The authors have identified significant advantages relative to methylene blue injection over that of the commonly used isosulfan blue dye. Advantages of using methylene blue include lack of the anaphylactoid reaction and its interference with pulse oximetry. In addition, a significant advantage to the use of methylene blue is the product cost; the authors estimated that isosulfan blue was 80 times more expensive than methylene blue.