Abstract
Guided percutaneous biopsy for cytologic or histologic diagnosis is well tried. Various types of needles and calibres are available. Only few studies have been performed comparing the biopsy results of different needle types. An experimental study was performed to evaluate the biopsy results of different needle types and of different needle calibres. The influence of tissue consistency on biopsy results was tested by comparing results of solid, soft and semiliquid tumour tissue. Fine needles and cutting needles were tested concerning the amount of tissue obtained and the preservation of the material. The material was analysed macroscopically in terms of weight and suitability for cytological or histological evaluation. The quality of the specimens was assessed by a pathologist. Material for cytologic diagnosis was obtained with all types of needles. Increasing needle size resulted in higher yield of diagnostic tissue. Small-bore cutting needles with an acute bevel angle provided better specimens for histology in soft or semiliquid tissue. It is not necessary to increase the needle size over 18-gauge.
| Original language | English |
|---|---|
| Pages (from-to) | 169-172 |
| Number of pages | 4 |
| Journal | Journal of Interventional Radiology |
| Volume | 4 |
| Issue number | 4 |
| State | Published - Dec 1989 |
| Externally published | Yes |