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  • Title: Atypical Hepatic Mesenchymal Hamartoma: Histologic Appearance, Immunophenotype, and Molecular Findings.
    Author: El Demellawy D, Lee JY, McDonell L, Dyment DA, Knisely AS, McGowan-Jordan J, Ngan B, Finegold M, Kapur RP, Nasr A.
    Journal: Pediatr Dev Pathol; 2019; 22(4):365-369. PubMed ID: 30497332.
    Abstract:
    Hepatic mesenchymal hamartoma is a rare benign neoplasm principally encountered in young children. Its origin is unknown. We report an unusual hepatic mesenchymal hamartoma in a 7-month-old girl, including histopathologic findings, immunophenotype, and karyotype. Chromosomal microarray analysis of tumoral tissue and circulating lymphocytes found 4 copies of a segment at 1q44 and fluorescence in situ hybridization indicated tandem triplication, ascribed to expansion of a paternal tandem duplication. This genetic abnormality may have played a role in pathogenesis.
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