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In their paper published in Gut, Farges et al report that in 23 out of 218 patients, areas of hepatocellular carcinoma (HCC) within hepatocellular adenoma (HCA) were observed, and the risk of malignant transformation was 4% in women and 47% in men.1 Hypothesising that HCC may arise from HCA is based on the assumption that at a certain point in time residual HCA or a transition zone with dysplastic changes (as found in colorectal cancers) is present within the malignant liver lesion.2
The postulated theory presented by Farges et al may have great implications for the management of HCA. HCA, a rare benign liver tumour mostly occurring in young women, carries a small risk of malignant transformation …
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