What is CT-guided lung puncture biopsy?

Ms. Xu is 72 years old. She was recently diagnosed with a tumor in her lungs. She has no obvious symptoms, but she feels bloated in the stomach and has a poor diet. She had tuberculosis in her 30s. Lung cancer was suspected after CT scan. A CT-guided biopsy was recommended, followed by chemotherapy. Some people say that biopsy is dangerous, so she is hesitant now.

CT-guided lung puncture biopsy is a safe diagnostic method that makes up for the shortcomings of bronchoscopy biopsy and ultrasound-guided lung puncture biopsy and improves the diagnosis rate of lung lesions.

In the past, due to the lack of necessary means, the method of symptomatic treatment followed by follow-up was used to treat peripheral lung lesions, which was both likely to delay the disease and cost money. For large tumors close to the chest wall, ultrasound can be used to guide puncture, but tumors with a diameter of less than 3cm2 are difficult to locate. Due to the characteristics and operation methods of B-ultrasound technology, this technology has great limitations, and the emergence of CT-guided lung puncture biopsy has provided a possible solution to this problem.

In order to improve the accuracy of CT-guided percutaneous lung puncture biopsy, the following points should be noted during the operation:

The patient's clinical and imaging data should be understood before surgery, and the indication should be carefully selected;

If enhanced scanning is available, the site with obvious enhancement should be selected for puncture. The layer with larger lesions should be selected as the target site for puncture, and liquefied necrotic tissue should be avoided.

The preoperative anesthesia effect must be good, otherwise the patient will not cooperate well;

Whenever possible, the patient should be placed in the most comfortable position, breathing training should be performed, better cooperation should be obtained, the difficulty of the operation should be reduced, and efforts should be made to obtain satisfactory tissue each time the needle is inserted, reduce damage to lung tissue, and try to avoid repeatedly penetrating the pleura at different points, so as to obtain satisfactory results;

The operator should be skilled and accurate during the operation and try to shorten the puncture time each time to reduce the impact of target lesion bleeding on obtaining accurate specimens;

Patients with blood in sputum after surgery, those who are clinically suspected of having a malignant tumor and are dissatisfied with the specimen, should undergo sputum cytology examination after surgery, because puncture causes cancer cells in the cancer lesion to fall off and be discharged along the trachea.