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错构瘤是一种含有正常成熟的组织，而其比例及排列却明显异常的肿瘤样团块，可发生于任何器官，较少见于头颈部。错构瘤可为单一性或多灶性，其中在一个病人身上不同部位生长的多灶性错构瘤，称为基因多显性错构瘤。那些起源于喉咽部的病例因病理学和组织学上证据不足而排除在?
Hysteroma is a kind of tumor-like mass containing normal mature tissue, but its proportion and arrangement are obviously abnormal. It can occur in any organs and rarely in the head and neck. Hashimotomas can be single or multifocal, in which a multifocal hamartoma that grows in a different part of a patient is called a gene multiple dominant hamartoma. Cases that originate in the hypopharynx are excluded due to insufficient evidence of pathology and histology?