Endoscopic-ultrasound-guided Fine Needle

As cytological aspirates from endoscopic-ultrasound-guided fine needle aspiration (EUS-FNA) has limited diagnostic sensitivity and are suboptimal for molecular profiling and morphological characterisation of certain neoplasms, a fine needle biopsy (FNB) with three-pronged (Franseen geometry) cutting edge has been developed to procure histology. In a randomised trial of 46 patients with pancreatic masses, procurement of histological core tissue as evidenced by total tissue and tumour areas was significantly higher for 22G FNB than FNA needle. Also, retention of tissue architecture and presence of desmoplastic fibrosis, which are critical for ancillary testing and molecular profiling, respectively, were significantly higher for FNB.

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