Javascript er ikke aktivert i din nettleser. Dette er nødvendig for å bruke Oncolex. Kontakt din systemadministrator for å aktivere JavaScript.

Fine needle biopsy, non-aspiration technique

Implementation

The patient should sit or lie on the examination table - whatever gives the best result. 

  • Wash the area for puncture with colorless chlorhexidine 1 mg/ml.
  • Allow the skin to dry.
  • Palpate the node/tumor.
  • Find the best position for puncturing.
  • Fix the lymph node/tumor between your fingers.
  • Puncture quickly through the skin with the cannula.
  • Move the cannula back and forth into the node in different directions (approximately 2–3 movements/second).
  • When (after 3–4 seconds) the material is visible in the upper part of the cannula passage, the cannula is retrieved.
  • Put a pressure on the point of puncture if needed.
  • Connect the cannula to the syringe filled with air.
  • Carefully spray the specimen from the cannula onto the slide.
  • If the suspicion of lymphoma or tumor is difficult to confirm, repuncture and put some material in the RPMI medium from a new puncture (for flow cytometry/molecular examination etc. Which type of examination is determined after microscopic examination.)
  • Smear the specimen on the slide.
  • Dry the specimen under a fan or hairdryer.
  • Staining: fixation fluid with methanol + haemacolour + rinsing in water  
    • 5 dips in fixation fluid. Allow the solution to drip off on paper. 
    • 3 dips in staining solution 1.
    • 6 dips in staining solution 2. Allow the solution to drip off onto paper.
    • Rinse in two tubs with clean water.
  • Examine the specimen under the microscope with a 10X or 20X objective.

 

 

Oslo University Hospital shall not be liable for any loss whether direct, indirect, incidental or consequential, arising out of access to, use of, or reliance upon any of the content on this website. Oslo University Hospital© 2018