Punktion/Stanzbiopsie

Nadelspitze im Knoten

  • Ultrasound-guided fine needle capillary cytology (FNCC):
  • targeted sampling within a node
  • Gold standard in the clarification of whether a lump is benign or malignant
  • very high diagnostic accuracy (correct in approx. 97-98% of punctures)
  • false negative rate in 0-3%
  • spares operations

Stanzbiopsie

  • Ultrasound-guided thyroid punch biopsy (core needle biopsy, CNB)
  • 18G needle under local anesthesia
  • necessary if fine needle aspiration (FNA or FNCC) did not yield a definite diagnosis
  • spares operations

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