CT Imaging Findings of Lung Squamous Cell Carcinoma Misdiagnosed as Lung Abscess
Objective To analyze the computed tomography(CT)imaging characteristics of lung squamous cell carcinoma misdiagnosed as lung abscess so as to improve the cognition and correct diagnosis rate of lung squamous cell carcinoma.Methods A total of 112 patients with lung squamous cell carcinoma misdiagnosed as lung abscesses and 80 patients with lung abscess in the hospital were enrolled as lung squamous cell carcinoma group and lung abscess group between December 2017 and December 2022,respectively.All underwent CT plain scan and enhancement scan.The clinical manifestations,course of disease,and CT imaging characteristics of lesions and surrounding lesions were compared between the two groups.Results The course of disease in lung squamous cell carcinoma group was longer than that in lung abscess group(P<0.05),proportion of cases with cavities and liquid level was lower than that in lung abscess group(P<0.05),and proportion of cases with cavity wall thickness>15 mm was higher than that in lung abscess group(P<0.05).The proportion of cases with blurred edges of surrounding lesions in lung squamous cell carcinoma group was lower than that in lung abscess group(P<0.05).After anti-infection,the proportion of cases with reduced lesions in lung squamous cell carcinoma group was lower than that in lung abscess group(P<0.05),while proportion of cases with unchanged lesions was higher than that in lung abscess group(P<0.05).There was no significant difference in clinical manifestations between the two groups(P>0.05).Conclusion Compared with lung abscess patients,there are fewer CT characteristics such as cavities combined with liquid level and blurred lesion edge in lung squamous cell carcinoma patients,while there are more characteristics such as cavity wall thickness over 15 mm and unchanged lesions after anti-infection.These CT imaging characteristics are of great significance in the differential diagnosis of lung squamous cell carcinoma and lung abscess.