ArticleJournal of surgical case reports2026
Mesenchymal hamartoma of the liver in a young adult female: a diagnostic challenge mimicking hepatic adenoma.
Article in Journal of surgical case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Mesenchymal hamartoma of the liver (MHL) is a rare benign lesion usually seen in infants and young children; adult onset is exceptional and can mimic a broad spectrum of hepatic neoplasms on imaging, including hepatocellular, cholangiocytic/biliary, and mesenchymal tumors. A 31-year-old woman was found to have a 23-mm hyperechoic mass in segment 7 on screening ultrasonography. One year later, it had enlarged to 68 mm. Contrast-enhanced computed tomography showed a well-circumscribed 75-mm lesion with gradual heterogeneous enhancement. Given her >10-year history of oral contraceptive use, a benign hepatocellular tumor such as hepatocellular adenoma was suspected; however, biliary epithelial tumors and mesenchymal tumors were also considered in the differential diagnosis. Because of rapid growth and proximity to the right hepatic vein, robot-assisted extended posterior sectionectomy with right hepatic vein resection was performed. Pathology revealed fibromyxoid stroma with spindle mesenchymal cells, irregular bile ducts, consistent with MHL without malignant change.
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