Vai trò chụp cắt lớp vi tính pha muộn trong đánh giá nốt phổi đơn độc ở bệnh nhân điều trị phẫu thuật

Abstract

Objective: To determine the role of multi-slice computed tomography with delayed phase contrast injection in evaluating solitary lung nodules. Subject and method: 91 patients with solitary lung nodules on computed tomography were confirmed by histopathological results after surgery at the National Lung Hospital from January 2021 to December 2022. Method: A prospective, cross-sectional study. Result: The mean age was 56.3 ± 12.1 years old. The most common age group was 50-69 years old. Male/Female ratio ~ 1.2:1. Benign nodules accounted for 25.3%, malignant nodules accounted for 74.7%. Nodules oval 67.0%, round 23.1%, polyarthral 5.5% and amorphous 4.4%. 83.5% solid nodule, 14.3% semi-solid nodule, 2.2% ground glass opacities nodule. Round nodules had a higher rate of benign than other types of nodules, while amorphous or polypoidal margins had the predominant rate of malignancy (75% and 100.0%). The overall average size was 20.4 ± 5.1mm, nodules with the diameter range 15-30mm were mostly malignant. Most of the malignant nodules had strong enhancement (59.3%). Delayed phase multislice computed tomography had sensitivity 92.6%, specificity 86.9%, and 91.2% accuracy. Conclusion: Delayed phase multislice computed tomography with contrast injection has high value in the differential diagnosis of a benign or malignant lung nodule.