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J Korean Radiol Soc. 1996 May;34(5):571-578. Korean. Original Article.
Kim MD , Kim DI , Yune HY , Lee BH , Sung KJ , Jung TS , Kim SY , Cho JM .
Department of Diagnostic Radiology, Yonsei University Medical College, Korea.

PURPOSE: To determine the value of CT(Computerized Tomography) in the diagnosis of laryngeal tuberculosis and to assess to what extent its characteristic findings different from those of aryngeal carcinoma. Materials and Methods : CT scans of twelve patients with laryngeal tuberculosis were reviewed and compared with those of fifteen patients with laryngeal cancer, retrospectively. Clinical symptoms, laryngoscopic examinations and the presence of pulmonary tuberculosis on chest radiographs were also reviewed. RESULTS: In laryngeal tuberculosis, bilater alsymmetric or asymmetric involvement was noted in nine(75%) patients, while unilateral involvement was seen in three(25%). This was significantly different from laryngeal cancer in which unilateral involvement was noted in twelve patients(80%). Diffuse thickening of the free margin of the epiglottis was a characteristic and frquent finding in tuberculosis(n=6, 50%). No deep submucosal infiltration of preepiglottic and paralaryngeal fat spacesis seen in tuberculosis in spite of large areas of involvement of laryngeal mucosa, while twelve patients(80%) with laryngeal cancer showed thickened deep infiltration which resulted in a submucosal mass. CONCLUSION: CT was useful in the diagnosis of laryngeal tuberculosis and its CT findings wee characterized by bilateral involvement, thickening of the free margin of the epiglottis and good preservation of preepiglottic and paralaryngeal fatspaces in spite of large areas of involvement.

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