Primary Hepatoid Adenocarcinoma of the Lung With Signet Ring Cell Differentiation and Widespread Osseous Metastases: A Case Report
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Pulmonary hepatoid adenocarcinoma (HAL) is an extremely rare and highly aggressive extrahepatic adenocarcinoma that exhibits hepatocellular carcinoma-like morphology and hepatocytic immunophenotype, often leading to diagnostic delay due to nonspecific respirat... ...
