Task: Answer Verification
Input (English): Question: Is subcutaneous injection of liquid and foamed polidocanol : extravasation responsible for skin necrosis during reticular and spider vein sclerotherapy?
Answer: This experimental study shows that extravasation of polidocal in usual circumstances of sclerotherapy of spider and reticular veins cannot be a significant cause of cutaneous necrosis rarely observed in this setting. It is particularly true for the foamed polidocanol where 1% strength seems safe if injected extravascularly in volumes up to 0.5 mL.
Output (English): no