Diagnostic value of CT feature analysis in atypical or early high-altitude pulmonary ede-ma
Objective To evaluate the diagnostic value of CT features in atypical or early high-altitude pulmonary edema(HAPE).Methods The CT features of chest of 50 patients with early HAPE were analyzed retrospectively,and the diagnostic value of CT in early HAPE was summarized.Results Among the 50 cases,35 cases involved unilateral lung and 15 cases involve bilateral lung,including 25 cases of right lung and 10 cases of left lung.Bilateral lung was involved in 15 cases.The lesions were localized in one lobe in 35 cases,in two lobes in 10 cases,and in three or more lobes in 5 cases.Early HAPE chest CT imaging features included increased and thickened bronchial-vascular bundles in both lungs,light ground-glass like changes,polygonal,quasi circular and small patchy high-density shadows,grid-like changes,nodule shadows in the lateral field of the lung,widened inner diameter of main pulmo-nary artery,thickened interlobular pleural,and compensatory emphysema.Conclusions Chest CT examination is one of the most im-portant methods in the diagnosis of HAPE,which can significantly improve the diagnostic accuracy of early or atypical HAPE.
high-altitude areaearly stagepulmonary edemagrinding glass density shadowreal variable shadow
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