title: Diagnosis and management of solid benign liver lesions.
abstract: More and more asymptomatic benign liver tumours are discovered incidentally and can be divided into regenerative lesions and true neoplastic lesions. The most common regenerative lesions include hemangioma, focal nodular hyperplasia and inflammatory pseudotumours of the liver. Neoplastic lesions include hepatocellular adenomas and angiomyolipomas. Regenerative lesions rarely increase in volume, do not yield a higher risk of complications and usually do not require treatment. By contrast, hepatocellular adenomas and angiomyolipomas can increase in volume and are associated with a risk of complications. Large hepatocellular adenomas (>5 cm in diameter) are undoubtedly associated with a risk of bleeding and malignant transformation, particularly the inflammatory (also known as telangiectatic) and β-catenin mutated subtypes. Accurate diagnosis needs to be obtained to select patients eligible for surgical resection. MRI has markedly improved diagnosis and can identify the major hepatocellular adenomas subtypes. The use of biopsy results to inform the indication for resection remains questionable. However, when diagnosis remains uncertain after imaging, percutaneous biopsy could help improve diagnostic accuracy.
authors.affiliation: Department of Hepatobiliary Surgery and Liver Transplantation, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France.
authors.forename: Jacques
authors.initials: J
authors.lastname: Belghiti
authors.affiliation: Department of Hepatobiliary Surgery and Liver Transplantation, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France.
authors.forename: François
authors.initials: F
authors.lastname: Cauchy
authors.affiliation: Department of Pathology, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France.
authors.forename: Valérie
authors.initials: V
authors.lastname: Paradis
authors.affiliation: Department of Radiology, Beaujon Hospital, University Paris-Diderot, 100 Boulevard du General Leclerc, 92110 Clichy, France.
authors.forename: Valérie
authors.initials: V
authors.lastname: Vilgrain
mesh_terms: D018248:Adenoma, Liver Cell / Q000175:diagnosis / Q000628:therapy; D018207:Angiomyolipoma / Q000175:diagnosis / Q000628:therapy; D020518:Focal Nodular Hyperplasia / Q000175:diagnosis / Q000628:therapy; D006104:Granuloma, Plasma Cell / Q000175:diagnosis / Q000628:therapy; D006392:Hemangioma, Cavernous / Q000175:diagnosis / Q000628:therapy; D006801:Humans; D008113:Liver Neoplasms / Q000175:diagnosis* / Q000628:therapy; D008279:Magnetic Resonance Imaging / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000379:methods; D014463:Ultrasonography / Q000379:methods