鼻额隐窝是额窦引流受阻的主要部位,由于鼻额峡部被重要结构包围有别于其他鼻窦,其重建引流术不能做成袋形。目前可应用鼻内窥镜手术去除鼻额隐窝的病变。鼻额峡部周围毗邻鼻额骨、中甲前端、鼻丘气房、鼻泪囊、额骨筛小凹及筛板,其峡部阻塞常引起病变。如被鼻丘气房向后上方压迫或被筛房向前压迫,或由于创伤、感染,或先前手术粘膜肿胀、息肉形成、瘢痕粘连等皆可引起引流障 Nasal crypts are the main site of frontal sinus drainage blocked, because the nasal isthmus is surrounded by an important structure different from other sinus, the reconstruction of drainage can not be made into a bag. At present, nasal endoscopic surgery can be used to remove the nasal crypts lesions. Nasal isthmus adjacent to the nasal frontal bone around the front, the nasal cavity, nasolacrimal sac, the frontal bone scallops and sieve plate, the isthmus blocking often cause lesions. Such as the nasal cavity above the oppression of the back or oppression by the screening room forward, or because of trauma, infection, or previous surgical mucosal swelling, polyps, scar adhesions, etc. can cause drainage barrier