Nghiên cứu giá trị cắt lớp vi tính ngực trong chẩn đoán nốt đơn độc ở phổi có đường kính lớn hơn 8mm

Abstract

Objective: To identify the value of multiple slices computed tomography in diagnosis of solitary pulmonary nodules image. Subject and method: 165 patients were examined and treated at National Lung Hospital from November 2016 to December 2019 that have a solitary pulmonary nodule on chest CT and have results of pathology (after biopsy and/or after surgery). Method: A prospective study, cross-sectional description. Result: Solitary pulmonary nodules had a benign rate of 51.5% and malignancy of 48.5%. The average age of disease 53.5 ± 1.4 years. The most common age group was 49 - 69 years old (p=0.946). Male/female ratio ~ 1.8:1. CT has a sensitivity of 98.7%; specificity 75.3%; positive predicted value 79.0%, negative predicted value 98.5% and accuracy 86.7%. With the method of taking late artery phase CT scan, the sensitivity value was 90.8%; specificity 78.2%; positive predicted value 85.2%; negative predicted value was 86.0% and accuracy was 85.5%. With dynamic CT method, sensitivity values ​​92.3%; specificity 68.2%; positive predicted value 63.2%; negative predicted value 93.7% and accuracy 77.1%. Patients who applied the method of late in artery had the ability to detect cancer 1.95 times higher than patients applying the dynamic CT method (p>0.05). Conclusion: Solitary pulmonary nodules are often seen clinically with high malignancy (48.5%). Multislices computed tomography has high value in the differential diagnosis of a benign or malignant pulmonary nodule, especially in late artery phase CT.