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					Pathologic Condition  | 
					
					 
					Principal Pathologic Clinical Features 
					
					Pertaining to Airway  | 
				
				
					| 
					 
					CONGENITAL  | 
				
				
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					Pierre Robin syndrome  | 
					
					 
					Micrognathia, macroglossia, glossoptosis, cleft soft palate  | 
				
				
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					Treacher Collins syndrome (mandibulofacial dysostosis)  | 
					
					 
					Auricular and ocular defects; malar and mandibular hypoplasia, microstomia, choanal atresia  | 
				
				
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					Goldenhar's syndrome (oculoauriculovertebral syndrome)  | 
					
					 
					Auricular and ocular defects; malar and mandibular hypoplasia; occipitalization of atlas  | 
				
				
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					Down's syndrome (mongolism)  | 
					
					 
					Poorly developed or absent bridge of the nose; macroglossia, microcephaly, cervical spine abnormalities  | 
				
				
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					Klippel-Feil syndrome  | 
					
					 
					Congenital fusion of a variable number of cervical vertebrae; restriction of neck movement  | 
				
				
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					Alpert's syndrome (acrocephalosyndactyly)  | 
					
					 
					Maxillary hypoplasia, prognathism, cleft soft palate, tracheobronchial cartilaginous anomalies  | 
				
				
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					Beckwith's syndrome (infantile gigantism)  | 
					
					 
					Macroglossia  | 
				
				
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					Cherubism  | 
					
					 
					Tumorous lesion of mandibles and maxillae with intraoral masses  | 
				
				
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					Cretinism (congenital hypothyroidism)  | 
					
					 
					Absent thyroid tissue or defective synthesis of thyroxine; macroglossia, goiter, compression of trachea, deviation of larynx/trachea  | 
				
				
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					Cri du chat syndrome  | 
					
					 
					Chromosome 5-P abnormal; microcephaly, micrognathia, laryngomalacia, stridor  | 
				
				
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					Meckel's syndrome  | 
					
					 
					Microcephaly, micrognathia, cleft epiglottis  | 
				
				
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					von Recklinghausen disease (neurofibromatosis)  | 
					
					 
					Increased incidence of pheochromocytoma; tumors may occur in the larynx and right ventricle outflow tract  | 
				
				
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					Hurler's syndrome (mucopolysaccharidosis I)  | 
					
					 
					Stiff joints, upper airway obstruction because of infiltration of lymphoid tissue; abnormal tracheobronchial cartilages  | 
				
				
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					Hunter's syndrome (mucopolysaccharidosis II)  | 
					
					 
					Same as in Hurler's syndrome, but less severe; pneumonias  | 
				
				
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					Pompe's disease (glycogen storage II)  | 
					
					 
					Muscle deposits, macroglossia  | 
				
				
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					ACQUIRED  | 
				
				
					| 
					 
					Infections  | 
				
				
					| 
					 
					Supraglottitis  | 
					
					 
					Laryngeal edema  | 
				
				
					| 
					 
					Croup  | 
					
					 
					Laryngeal edema  | 
				
				
					| 
					 
					Abscess (intraoral, retropharyngeal)  | 
					
					 
					Distortion and stenosis of the airway and trismus  | 
				
				
					| 
					 
					Papillomatosis  | 
					
					 
					Chronic viral infection forming obstructive papillomas, primarily supraglottic  | 
				
				
					| 
					 
					Ludwig's angina  | 
					
					 
					Distortion and stenosis of the airway and trismus  | 
				
				
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					Arthritis  | 
				
				
					| 
					 
					Rheumatoid arthritis  | 
					
					 
					Temporomandibular joint ankylosis, cricoarytenoid arthritis, deviation of larynx, restricted mobility of cervical spine  | 
				
				
					| 
					 
					Ankylosing spondylitis  | 
					
					 
					Ankylosis of cervical spine; less commonly ankylosis of temporomandibular joints; lack of mobility of cervical spine  | 
				
				
					| 
					 
					Benign Tumors  | 
				
				
					| 
					 
					Cystic hygroma, lipoma, adenoma, goiter  | 
				
				
					| 
					 
					Stenosis or distortion of the airway  | 
				
				
					| 
					 
					Malignant Tumors  | 
				
				
					| 
					 
					Carcinoma of tongue, carcinoma of larynx, carcinoma of thyroid  | 
					
					 
					Stenosis or distortion of the airway; fixation of larynx or adjacent tissues (e.g., infiltration or fibrosis from irradiation)  | 
				
				
					| 
					 
					Trauma  | 
				
				
					| 
					 
					Head injury, facial injury, cervical spine injury  | 
					
					 
					Cerebrospinal rhinorrhea, edema of the airway; hemorrhage; unstable fracture(s) of the maxillae and mandible; intralaryngeal damage  | 
				
				
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					Miscellaneous Conditions  | 
				
				
					| 
					 
					Morbid obesity  | 
					
					 
					Short, thick neck and large tongue are likely to be present  | 
				
				
					| 
					 
					Acromegaly  | 
					
					 
					Macroglossia; prognathism  | 
				
				
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					 Acute burns  | 
					
					 Edema of airway  | 
				
				
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					Physiologic conditions  | 
					
					 
					
            pregnancy  |