CT of saber-sheath trachea. Correlation with clinical, chest radiographic and functional findings.
(1994) Acta radiologica (1987- ) — Vol. 35, n° 3, p. 247-250 (1994)
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- The diagnosis of saber-sheath trachea is easy at CT due to its cross-sectional imaging, but the significance of this CT sign has not been evaluated in the diagnosis of chronic obstructive pulmonary disease (COPD). Various signs of COPD were compared between a series of 20 patients with a saber-sheath trachea at CT (tracheal index < or = 66%) and a group of 20 pneumologic control patients without saber-sheath trachea (tracheal index > or = 70%). These signs included clinical and standard radiographic indices of COPD, sternum-spine distance and 3 functional tests of COPD: forced expiratory volume in one second, carbon monoxide diffusing lung capacity, and functional residual capacity (FRC). A significant difference was found between the 2 groups, concerning the values of FRC (p < 10(-4)) and of sternum-spine distance (p < 10(-2)). The tracheal index was significantly correlated with the FRC values (r = -0.611; p < 10(-5)) and with the sternum-spine distance (r = -0.322; p < 0.05). No other significant difference was observed. It is concluded that saber-sheath trachea is basically a sign of hyperinflation.
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Trigaux, J.-P., Hermes, G., Dubois, P., Van Beers, B., Delaunois, L., & Jamart, J. (1994). CT of saber-sheath trachea. Correlation with clinical, chest radiographic and functional findings. Acta radiologica (1987- ), 35(3), 247-250. https://hdl.handle.net/2078.5/130468 (Original work published 1994)