• Wei Liao, Binhao Zhang, Wei Zhang, Lin Chen, Wanguang Zhang, Bixiang Zhang, and Xiaoping Chen.
• Hepatic Surgery Center, Department of Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
• Medicine (Baltimore). 2017 Aug 1; 96 (31): e7281.

RationaleMesenchymal hamartomas of the liver is one type of rare liver tumor.Patient ConcernsMesenchymal hamartomas of the liver (MHL) is rarely reported in the left lobe of the liver in children who are more than 2 years old. It is difficult to distinguish it from liver lesions such as hepatoblastoma in children, and hepatocellular carcinoma and focal nodular hyperplasia in adults. In addition, it is hard to correctly diagnose it without pathological examination.DiagnosesMesenchymal hamartomas of the liver.InterventionsThis patient underwent an operation assisted by the Da Vinci surgical system and the tumor was completely resected.OutcomesNo tumor recurrence or metastasis was observed 14 months after operation.LessonsMHL is a benign tumor that is difficult to diagnose due to the lack of specific clinical symptoms and signs. The management of MHL remains controversial. To achieve a good long-term outcome, complete resection of MHL is recommended.

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