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논문 기본 정보

자료유형
학술저널
저자정보
이성갑 (부산대학교 의과대학 이비인후과학교실)
저널정보
대한영상의학회 대한방사선의학회지 대한방사선의학회지 제34권 제3호
발행연도
1996.1
수록면
359 - 366 (8page)

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Purpose : To analyze the causes of vocal cord fixation in laryngeal cancer and to demonstrate its spiral CTfindings. Materials and Methods : We retrospectively applied the five pathologic mechanisms of vocal cord fixationto spiral CT findings and evaluated mechanisms of fixed vocal cord in 16 patients with laryngeal cancer of T3 ormore on staging. CT findings of another six patients (T2) showing one or more suspicious mechanisms of vocal cordfixation in conventional CT were compared with those of the 16 patients (T3 or more). Results : In 16 patientswith laryngeal cancer of T3 or more, the most common finding of vocal cord fixation was the complete replacementof the true vocal cord (including the thyroarytenoid and vocalis muscle) by the tumor and tumor invasion of theparalaryngeal space (n = 16). Other findings were tumor invasion and fixation of the cricoarytenoid joint (n = 9),interference with cord mobility by the bulky mass (n = 6), tumor invasion of the thyroid cartilage, with vocalcord fixation (n = 4) and subglottic tumor spread (n = 3). In another six patients (T2) with suspicious vocal cordfixation, conventional CT showed partial vocal cord invasion and intact or minimal invasion of the paralaryngealspace (n = 3), a bulky mass without vocal cord invasion (n = 1) and subglottic extension but movable vocal cord (n= 2). Conclusion : Although the cause of vocal cord fixation from laryngeal cancer may be due to one of fivepatterns of cancer spread, or to a combination of these, the most common spiral CT finding is complete replacementof true vocal cord by the cancer and tumor invasion of the paralaryngeal space. Accurate evaluation of vocal cordfixation and the extent of the tumor could be evaluated with spiral CT using the breathing technique.

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