Endoscopic ultrasound-guided fine-needle aspiration biopsy - Recent topics and technical tips

Figure 4 Pancreatic tail neuroendocrine tumor where the “skewering + respiratory fluctuations” method made it possible to ensure the puncture route. A and B: Difficult to ensure the stroke width because the kidney is adjacent to the small mass; C: Tumor is penetrated so that it is “skewered”; D: Tissue was collected by stroking, which is useful for small masses; E: With the needle kept in position, respiratory fluctuations were used to collect the tissue; F: Needle kept in place throughout the puncture, Respiratory fluctuations yielded similar results to fanning; G and H: Sample tissue was also collected for hematoxylin-eosin staining and immunohistological staining, yielding a diagnosis of neuroendocrine tumor of the pancreas.