Single-location dynamic enhanced CT for lung adenocarcinoma and squamous carcinoma with diameter <3 cm

Objective To evaluate the diagnostic value of single-location dynamic enhanced CT for lung adenocarcinoma and squamous carcinoma with diameter 3 cm. Methods Single-location dynamic enhanced CT in the patients with lung adenocarcinoma (22 cases) and lung squamous carcinoma (9 cases) were analyzed, and the time-intensity curves were created. Results The average degree of enhancement of lung adenocarcinoma were higher than that of squamous carcinoma in 135 s and 195 s ( P 0.05), and the other times were not significantly different (all P 0.05). The time-intensity curve of adenocarcinoma increased slowly, while squamous carcinoma's curve looked as a parabola and showed a slowly progress and then decreased slowly. Both enhanced start time of adenocarcinoma and squamous carcinoma began from 35 s, the peak time of squamous carcinoma was earlier than that of adenocarcinoma, the peak height of lung adenocarcinoma was higher than that of squamous carcinoma, but they were not significantly different ( P 0.05). Conclusion Single-location dynamic CT is helpful in differential diagnosis of lung adenocarcinoma and lung squamous carcinoma.