Fine-needle aspiration technique under endoscopic ultrasound guidance: A technical approach for RNA profiling of pancreatic neoplasms

Figure 1 Ultrasound image of the pancreatic body including a hypoechoic lesion (in the center) with clear boundaries. Orange arrows indicate the directions of the needle movements during fine-needle aspiration using the “fanning” technique.

Figure 2 Strategy for processing biopsy samples obtained from fine-needle aspiration under endoscopic ultrasound guidance. The steps for processing biopsy samples for biobanking are highlighted in yellow. TTNB: Through-the-needle biopsy.