[Extensive transfixing skin necrosis after breast biopsy under local anesthesia: About four cases]. / Nécrose cutanée étendue transfixiante après biopsie mammaire sous anesthésie locale : rapport de quatre cas.

INTRODUCTION: Local anesthetics with adrenaline are widely used in routine practice and have long proven their benefits and safety. The rare complications due to their use mainly concern immuno-allergic and vascular mechanisms. DESCRIPTION: In this article, we present four similar cases of early transfixing skin necrosis occurring after radioguided breast biopsy under local anesthesia using epinephrine local anesthetics in the context of a diagnostic approach to breast cancer. DISCUSSION: Although the literature is comforting about the use of local anesthetics, even on the extremities, severe skin complications continue to be reported sporadically. The analysis and understanding of these phenomena would allow, in the long run, to avoid them and to reduce their importance. CONCLUSION: The occurrence of skin necrosis after breast biopsy under radiographic control is rare and seems to be related to the local anesthetic procedure. Although similar cases have been reported in the literature, it does not seem possible today to conclude on the exact physiopathology of these complications. A better knowledge of the pathophysiology of these complications would help to avoid their occurrence in the future.