Successful management of Kaposiform Hemangioendothelioma with long-term sirolimus treatment: a case report and review of the literature

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Matteo Chinello *
Daniela Di Carlo
Francesca Olivieri
Rita Balter
Massimiliano De Bortoli
Virginia Vitale
Ada Zaccaron
Elisa Bonetti
Alice Parisi
Simone Cesaro
(*) Corresponding Author:
Matteo Chinello | matteo.chinello@aovr.veneto.it

Abstract

Background: Kaposiform Hemangioendothelioma (KHE) is a rare vascular tumour of the infancy and of the first decade of life. It is locally aggressive and potentially life threatening when associated to consumptive coagulopathy, known as Kasabach-Merritt syndrome (KMS). No consensus or guideline for the therapy has been reached because of the lack of prospective trials and the different standard care suggestions are based on retrospective case series.

Case report: We report the case of a 9-month-old male with KHE and KMS in which the initial response, obtained with prednisone and vincristine, was subsequently consolidated and strengthened by long-term treatment with sirolimus, an mTOR inhibitor. A summary of the published data is presented as well.

Conclusions: The inhibition of mTOR pathway represents the most important therapeutic innovation introduced in the last few years for KHE. Our case shows the effectiveness and good tolerance of long-term therapy with sirolimus.

Keywords: Kaposiform Hemangioendothelioma, Kasabach-Merrit syndrome, sirolimus, prednisone, vincristine


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