Considerations for needle biopsy of lung mass

1. Accurate preoperative positioning and selection of the best approach and puncture site are the keys to puncture success, especially for small lung masses.

Satisfactory result can be obtained by sampling in the substantial tumor area of amidships, if sampling in the necrotic area of amidships, it is easy to cause false vagina. At the same time, the success rate of this examination for central lung lesions is low.

3. In order to avoid pneumothorax, bleeding and other complications as well as rare air embolism, fine needles should be selected for puncture as far as possible, instead of blindly multiple and multi-direction puncture, and normal lung tissues should be avoided as far as possible in the puncture route.

4. Needle insertion and needle extraction should be carried out in the state of natural breath-holding in calm breathing. It is not necessary to force the patient to hold his breath.

5. For hard lumps, attention should be paid to repeatedly lift and insert twist, and the action should be light, fast and accurate. Suction negative pressure should not be too large, otherwise too much blood suction will affect film reading.

6. The whole process of puncture under the guidance of ultrasound and CT is expected to reduce failures and complications.

7. The smear should be thin and uniform, and the range should not be too large. If HE or Pap staining is performed, the wet smear should be immediately fixed in 95% alcohol to ensure good smear quality and to clearly observe the fine structure of cells.

8. If there is a large amount of pneumothorax or tension pneumothorax, intubation and exhaust should be performed. Fluid pneumothorax should be examined to exclude hemothorax complications.

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