The image-guided fine-needle aspiration biopsy in the diagnosis of gastro-intestinal tumors has reached a very high value out of other diagnostic tools. The results of this method depend directly on the technical performance (aspirator, technicians, cytologist) of the punction and processing of the obtained cytological material. The following paper is a brief communication on technical methods and experience in performing the image-guided fine-needle aspiration biopsy at the university hospital of Zurich.
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