Key clinical point: The pediatric hepatocellular carcinoma (HCC) subtypes fibrolamellar carcinoma (FLC) and conventional HCC (cHCC) can be considered nonequivalent entities because they show different anatomic patterns and outcomes together with their known molecular differences.
Major finding: HCC subtypes were significantly different in presentation and behavior, with increased lymph node involvement in FLC and higher stage in cHCC. Multivariate analysis revealed increased mortality in cHCC compared with that in FLC (adjusted hazard ratio 2.2; P = .004).
Study details: These findings are from a multicenter, retrospective review study including 262 patients <20 years of age with hepatocellular neoplasms, including cHCC (n = 110), FLC (n = 119), and tumors with mixed features of HCC and hepatoblastoma (n = 33).
Disclosures: The study was supported by the University of Utah Population Health Research Foundation and National Center for Advancing Translational Sciences of the US National Institutes of Health. Some authors reported receiving research grants or travel support from various sources.
Source: Short SS et al. Histologic type predicts disparate outcomes in pediatric hepatocellular neoplasms: A Pediatric Surgical Oncology Research Collaborative study. Cancer. 2022 (May 13). Doi: 10.1002/cncr.34256