“…Instead, we note that in the above-mentioned cases [3,4,8], as well as the present case, where no complications were observed, there was an immediate treatment by local heating, massage, or exercise, as recommended both in the EANM procedure guidelines for treatment with [ 90 Y]Y-Ibritumomab tiuxetan (Zevalin®) [17] and 223 RaCl 2 (Xofigo®) [18] and in the product characteristics of Lutathera® ([ 177 Lu]Lu-DOTATATE) [19]. In most of the reported cases with serious radiation damage [5,14,15,16], no immediate treatment was initiated, while in one recent case with [ 90 Y]Y-Ibritumomab tiuxetan [6], a patient was in need for surgery with removal of necrotic skin and soft tissue even though extravasation was quickly realized and early treatment was attempted by aspiration of the puncture site and massage of the arm. These observations from cases with and without radiation damage indicate that immediate and efficient treatment is decisive for the outcome after extravasation regardless of the size of the molecule.…”