- Verbal consent
- Prepare lab form and pot with formalin
- Use USS guidance whenever possible
- Ensure the patient is not on anti-coagulants
- Mark out lump, LA with 5ml of 1% lignocaine with adrenaline
- Prepare area and trolley with sterile gloves etc
- Demonstrate to the patient the sound the gun makes
- 11-blade scalpel to make skin incision
- Introduce core-biopsy needle into the incision and advance towards lesion
- Fire gun; inner needle then surrounding sheath fire into mass
- Withdraw and ask assistant to scrape tissue out of groove
- Repeat until 3-5 good cores (sink to bottom) are taken from different directions
- Pressure to 5 minutes.