Diagnostic Value Of Bronchoscopy Biopsy Guided By Small Ultrasound Probe In Peripheral Lung Nodules

Objective To evaluate the diagnostic value of endobronchial ultrasound-guided transbronchial lungbiopsy(EBUS-TBLB)guided by a small ultrasound probe for peripheral lung nodules..Methods Sixty-one patients with peripheral pulmonary nodules detected by chest CT examination in the Second Department of Respiratory and Critical Medicine of the First Affiliated Hospital of Kunming Medical University from January 2019 to December 2019 were selected to perform peripheral lung lesions under the guidance of a small ultrasound probe Biopsy to obtain specimens,observe the benign and malignant nature of lung nodules,the diagnosis rate of the location of the lung lobe,the relative position of the ultrasound probe and the lesion,the relationship between the lesion diameter and the positive rate,and the incidence of complications.Use spss25.00 statistical software to analyze the data.Results 1.Of the 61 patients,47 were confirmed by EBUS-TBLB,with a total positive diagnosis rate of 77.05%,a malignant lesion diagnosis rate of 85.2%(23/27),and a benign lesion diagnosis rate of 70.59%(24/34).Average operation time(28.23 ±3.91)min,lesion diameter(2.33 ± 0.55)cm,number of specimens(5.25 ± 0.97).2.The distribution of the lesions in the location of the lung lobes and the diagnosis rate:4 cases of left upper lobe(accounting for 6.6%),diagnosis rate 50%(2/4);19 cases of left lower lobe(accounting for 31.1%),diagnosis rate 78.9%(15/19);right upper lobe 15 cases(accounting for 24.6%),the diagnosis rate was 73.3%(11/15);8 cases of the right middle lobe(accounting for 13.1%),the diagnosis rate was 75%(6/8);15 cases of the right lower lobe(24.6%)),The diagnosis rate was 86.7%(13/15).Among them,the diagnosis rate of the left upper lobe was the lowest,and the diagnosis rate of the right lower lobe was the highest.The results showed that there was no statistical difference in the diagnosis rate between different lung lobes(X2=2.614,P>0.05).3.Related factors affecting the diagnosis rate of EBUS-TBLB:The diagnosis rate of lesion diameter>20mm and ?20mm was 86.36%(38/44)and 52.94%(9/17)respectively,and there was a statistical difference between the two groups(P<0.05).The diagnostic rates of the lesions located at the center and one side of the probe under ultrasound were 92.11%(35/38)and 50.00%(11/22),respectively,with statistical differences(P<0.05).4.complications:Most patients had no obvious serious complications during the operation.Among them,4 patients had a small amount of bleeding of about 10-20ml,1 patient had postoperative fever,and 1 patient had a small amount of pneumothorax.After proper treatment,there was no special discomfort.Conclusions EBUS-TBLB has a high positive diagnosis rate for peripheral pulmonary nodules.The diameter of the lesion and the position of the probe and the lesion affect the positive diagnosis rate.It is less invasive and has no serious complications.It is a safe and effective method for peripheral lung biopsy,Worthy of widespread clinical application.