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首页> 外文期刊>The Laryngoscope: A Medical Journal for Clinical and Research Contributions in Otolaryngology, Head and Neck Medicine and Surgery, Facial Plastic and Reconstructive Surgery .. >Scanning electron microscopic study of the nasolabial cyst: its clinical and embryological implications.
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Scanning electron microscopic study of the nasolabial cyst: its clinical and embryological implications.

机译：鼻唇囊肿的扫描电子显微镜研究：其临床和胚胎学意义。

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OBJECTIVE: Nasolabial cyst is an uncommon midfacial cyst. It is considered to be a developmental anomaly arising from the rest of nasal respiratory epithelium. Although the cyst is a well-recognized entity, there remains some confusion of its origin, cell types, and ultrastructures. Based on the routine light microscopic study, some authors reported the epithelial cells of the inner lining of the nasolabial cyst were ciliated; some others reported they were nonciliated. To clarify this, a scanning electron microscopic study is needed. STUDY DESIGN: This was a prospective clinical series. METHODS: A transnasal marsupialization method was used to treat 10 patients with nasolabial cyst. With patients under local anesthesia, the roof of the cyst wall and a disk of nearby nasal mucosa were excised together with a sickle knife and scissors. Surgical specimens were dissected and processed for scanning electron microscopy and histochemistry. Patients were followed up for 8 to 65 months. RESULTS: Marsupialization of cysts was successfully performed on all patients. Electron microscopically, the inner surface of the nasolabial cysts in all the cases was lined with nonciliated columnar epithelium consisting chiefly of goblet cells and basal cells. It is suggested that goblet cells contributed to clear, thin, and yellow mucus present in the cyst lumen. Instead of cilia, these epithelial cell surfaces were equipped with numerous short, globular, or irregular microvilli. Apical cytoplasm of adjacent cells did not tightly adhere to each other. Instead, microsulci of 1 to 3 microm in width formed between cells. Cytoplasmic processes from the lateral border spanned the microsulcus and contacted with those from neighboring cells. CONCLUSION: The novel study has proved that the lining epithelium on the inner surface of the nasolabial cyst is columnar epithelium that chiefly consisted of two types of cells: goblet cells and basal cells. Not present were ciliated cells that were essential in the other portion of the respiratory tract. Numerous microvilli, instead of cilia, covered the inner lining of the nasolabial cyst, probably as a result of lacking the stimulation of air in ventilation as that on the other portion of the respiratory tract. The cilia of the epithelium were ill developed.
机译：目的：鼻唇囊肿是一种罕见的中型囊肿。它被认为是由其余的鼻呼吸上皮引起的发育异常。尽管囊肿是公认的实体，但其起源，细胞类型和超微结构仍然有些混乱。根据常规的光学显微镜研究，一些作者报道了鼻唇囊肿内壁的上皮细胞被纤毛化。其他一些人则说他们无礼。为了阐明这一点，需要进行扫描电子显微镜研究。研究设计：这是一个前瞻性临床系列。方法：经鼻有袋化方法治疗鼻唇囊肿10例。对于接受局部麻醉的患者，用镰刀和剪刀将囊壁的顶部和附近的鼻粘膜摘除。解剖手术标本并进行扫描电子显微镜和组织化学处理。对患者进行了8至65个月的随访。结果：所有患者均成功完成囊肿的囊袋化。用电子显微镜观察，在所有情况下，鼻唇囊肿的内表面都衬有主要由杯状细胞和基底细胞组成的非纤毛柱状上皮。提示杯状细胞会导致囊腔中存在的透明，稀薄和黄色粘液。这些上皮细胞表面代替纤毛，配备了许多短的，球形的或不规则的微绒毛。相邻细胞的顶端细胞质彼此不紧密粘附。而是在细胞之间形成了宽度为1到3微米的微亚硫酸盐。来自外侧边界的细胞质过程跨越了微沟，并与邻近细胞的细胞质接触。结论：这项新的研究证明鼻唇囊肿内表面的衬里上皮是柱状上皮，主要由两种类型的细胞组成：杯状细胞和基底细胞。没有出现在呼吸道其他部分必不可少的纤毛细胞。许多微绒毛而不是纤毛覆盖了鼻唇囊肿的内壁，这可能是由于缺乏像呼吸道其他部位那样的通气对空气的刺激。上皮纤毛不适。

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