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THE “-OMAS” and “-OPIAS”:  Targeted and Philosophical Considerations Regarding Hamartomas, Choristomas, Teratomas, Ectopias, and Heterotopias in Pediatric Otorhinolaryngologic Pathology

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Abstract

The spectrum of “developmental” lesions that occur in the head and neck predominantly congenital in origin and arising at birth and/or discovered in childhood is broad and fascinating. These have been grouped into categories such as “ectopias”, “heterotopias”, “hamartomas”, and “choristomas”. On a philosophical and consequently systematic level, these lesions, mostly benign tumors seem to lack a true understanding of the pathogenetic foundation on which to base a more unified taxonomic designation. In this review, we will consider some of these select tumors as they represent syndromic associations (nasal chondromesenchymal hamartoma and DICER1 syndrome), the lingual choristoma from the perspective of its nomenclature and classification, lesions with ectopic meningothelial elements, and teratomas and the enigmatic “hairy polyp” in reference to a broader discussion of pathogenesis and pluripotent cells in the head and neck. A consistent thread will be how these lesions are designated with some final thoughts on future directions regarding the investigation of their pathogenesis and taxonomic nomenclature.

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  1. Department of Pathology, Anatomy, and Laboratory Medicine, West Virginia University School of Medicine, Morgantown, WV, USA

    John A. Ozolek

  2. Department of Tumour Pathology, Institute of Oncology, Istanbul University, Istanbul, Capa-Istanbul, 34093, Turkey

    Merva Soluk Tekkesin

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Ozolek, J.A., Tekkesin, M.S. THE “-OMAS” and “-OPIAS”:  Targeted and Philosophical Considerations Regarding Hamartomas, Choristomas, Teratomas, Ectopias, and Heterotopias in Pediatric Otorhinolaryngologic Pathology. Head and Neck Pathol 15, 25–40 (2021). https://doi.org/10.1007/s12105-020-01251-y

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