Russian Journal of Pediatric Surgery, Anesthesia and Intensive CareRussian Journal of Pediatric Surgery, Anesthesia and Intensive Care2219-40612587-6554Eco-Vector13510.17816/psaic135MESENCHYMAL HAMARTOMA OF THE LIVERRazumovskyA. Yu.1595105@mail.ruFeoktistovaE. V.9433672@mail.ruKachanovD. Yu.kachanov78@gmail.comTereschenkoG. V.inkova@mail.ruKulikovaN. V.noemail@neicon.ruMoiseenkoR. A.Roman.Moiseenko@fccho-moscow.tuIsotovaO. Yu.Olga.Izotova@fccho-moscow.tuRoschinV. Yu.vitally.roshin@fccho-moscow.tuVarfolomeevaS. R.varfolomeeva-07@mail.ruN.F. Filatov Children City Clinical Hospital No. 13Federal Scientific Clinical Research Center of Pediatric Hematology, Oncology, and Immunology named by Dmitry Rogachev of the Ministry of Health of the Russian Federation3001201551839130012017Copyright © 2015, Razumovsky A.Y., Feoktistova E.V., Kachanov D.Y., Tereschenko G.V., Kulikova N.V., Moiseenko R.A., Isotova O.Y., Roschin V.Y., Varfolomeeva S.R.2015In this paper, we report a case of a giant fast-growing cystic tumor of the liver in an eight-month-old child. Abdominal ultrasound and computed tomography performed in the preoperative stage revealed a mesenchymal hamartoma of the liver. The tumor was removed completely. Histological examination confirmed the mesenchymal hamartoma. Such a benign liver lesion is a very rare case. 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