Publication date: Available online 17 May 2018
Source:Annales de Dermatologie et de Vénéréologie
Author(s): M. Ehret, C. Velter, M. Tebacher, C. Bruant-Rodier, B. Cribier
IntroductionLe mébutate d'ingénol est un traitement médical des kératoses actiniques (KA) qui agit par un double mécanisme : induction rapide de mort cellulaire et réaction inflammatoire intense.ObservationNous rapportons le cas d'un patient de 75 ans qui a développé une tumeur de croissance rapide 5 semaines après l'application de mébutate d'ingénol sur des KA. L'analyse histologique après exérèse chirurgicale révélait un carcinome épidermoïde (CE) invasif avec des signes d'agressivité (infiltration péri-nerveuse et perméation vasculaire).DiscussionLes effets secondaires constants du mébutate d'ingénol sont bénins et régressifs spontanément en 2 à 4 semaines : érythème, œdème, croûtes, ulcérations/érosions, pustules. La survenue d'un CE est rare. Nous avons cherché d'autres cas dans la littérature et dans les centres de pharmacovigilance français et européens. Trois observations ont été rapportées dans la littérature, 21 cas ont été signalés à l'agence européenne du médicament et l'interrogation des centres de pharmacovigilance français a permis de trouver cinq cas de CE après application de mébutate d'ingénol. Le rôle du mébutate d'ingénol dans le développement de CE n'est pas connu. L'inflammation induite par la molécule pourrait jouer un rôle dans le développement de ces tumeurs, par analogie à d'autres événements, de type traumatisme cutané (prise de greffe cutanée, incision chirurgicale). Le suivi au long cours de patients traités permettra de mieux connaître la fréquence des cas.IntroductionIngenol mebutate is an actinic keratosis treatment, which has a dual action mechanism. It allows a rapid cellular death and a severe inflammation.ObservationWe report the case of a 75 years old patient with a rapidly growing tumor 5 weeks after application of ingenol mebutate on typical actinic keratosis. Histological analysis after surgical excision showed an invasive squamous cell carcinoma (SCC); with aggressiveness signs: perineural infiltration and vascular permeation.DiscussionIngenol mebutate's common side effects are benign and regressive within 2 to 4 weeks. There are erythema, edema, crusts, and ulcerations/erosions. Squamous cell carcinoma development was rarely reported. We have tried to collect other cases in the literature and in pharmacovigilance centres: three similar cases were recently published in the literature, 21 cases were notified to the European Medicines Agency and we asked French pharmacovigilance centres and found 5 cases of SCC after ingenol mebutate application. The role of the molecule in SCC development is currently unknown. Induced inflammation could take part in the development of these tumors. We compare this case with other situations of inflammation, such skin graft donor site or surgical incision, complicated of rapidly growing SCC. Our case, literature's and pharmacovigilance's cases encourage us to follow ingenol mebutate's side effects. Careful follow-up and registration of such cases are important to gain further insight on this topic.
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Σάββατο 19 Μαΐου 2018
Carcinome épidermoïde de croissance rapide après traitement par mébutate d’ingénol
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