Narrow Band Imaging (NBI) によるアレルギー性鼻炎と血管運動性鼻炎症例の鼻粘膜所見について

概要

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Examination of intranasal surface structures was performed with narrow band imaging (NBI) using white light in patients with allergic rhinitis and patients with vasomotor rhinitis. At the surface of the nasal mucosa, rather deep capillaries were visualized with a reticulate pattern. It is difficult to differentiate NBI findings in the nasal mucosa during an attack-free phase in allergic rhinitis and those in non-allergic rhinitis. During an allergy attack of the nasal obstruction type, rather deep capillaries in the inferior turbinate are visualized as being partially dilated, along with interstitial edema. The rather deep capillaries in the inferior turbinate are sparsely visualized during an allergy attack of the rhinorreheal type. The rather deep capillaries are seen mottled during an attack-free phase in vasomotor rhinitis, during which, the NBI demonstrates contracted capillary nets and dilated cavernous sinus blood vessels. The axon reflex is likely to be exaggerated during an attack of vasomotor rhinitis. Intranasal examination with NBI is of value for differentiation between allergic rhinitis and vasomotor rhinitis during an attack
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