Focal nodular hyperplasia of the liver (FNH) is a rare benign lesion of the liver. FNH is a benign tumor of hepatocellular origin with an age of onset from 3 weeks to 88 years, mostly in 30 to 40 years. The exact etiology of FNH is not known. Treatment: Surgical resection is the effective treatment of choice for FNHL, which is generally considered to be non-carcinogenic. Surgical treatment should be actively used for the following reasons: 1. FNHL is rare, imaging is difficult to characterize, and the final diagnosis still requires pathological judgment, which is still difficult in differential diagnosis and has a high rate of misdiagnosis. Especially when it cannot be distinguished from liver malignancy on imaging, delayed treatment can be avoided. 2.Patients with young age or large tumor, which may cause rupture and bleeding in daily life. 3.Patients with obvious symptoms and heavy mental burden. 4.Surgical efficacy is certain and there is no recurrence after long-term follow-up. The surgical method can be open surgery or laparoscopic surgery, the latter is less traumatic and faster recovery, which is worth advocating. The disease is a benign lesion and the prognosis is good for surgical excision. The development of the lesion is extremely slow. Very few cases have nodule rupture hemorrhage death and malignant transformation.
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