CT scan of paranasal sinuses play a key role in the preoperative evaluation of patients undergoing endoscopic sinus surgeries (ESS) for chronic rhinosinusitis (Rozyo-Kalinowska et al., 2003).
Divided into brief study units, this textbook introduces the main concepts in otorhinolaryngology, covering the anatomy, physiology, and immunology of the nose, paranasal sinuses, and face, diagnostic evaluation of the nose and paranasal sinuses, and specific diseases; the anatomy, physiology, examination, and conditions of the oral cavity and pharynx, ear, facial nerve, lateral skull base, external neck, larynx, and trachea; and hearing, voice, and speech and language disorders.
Small cell neuroendocrine carcinoma (SCNEC) is a rare disease of nose and paranasal sinuses. In contrast to other regions SCNEC of this region has been reported to be recurrent and locally aggressive.
Because the nasal cavity and paranasal sinuses are very close to the base of the skull, bone defects and dural tears that may cause some intracranial complications (such as rhinorrhea, meningitis, vascular injury with subarachnoid hemorrhage, and optic nerve injury) may occur during endoscopic paranasal sinus surgery (4).
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