Fine needle- and core needle biopsy
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