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BACKGROUND The pathologic distinction between hepatocellular carcinoma (HCC) and hepatocellular adenoma (HCA) is sometimes problematic due to histologic overlap between the 2 entities, a problem(More)
BACKGROUND Pancreatic acinar cell carcinomas (ACCs) are clinically and pathologically distinct from pancreatic ductal adenocarcinomas (PDAs). Whereas endocrine differentiation has been well shown in(More)