EUS Tissue Sampling: What Are We Talking About?

Endoscopic ultrasound–guided fine-needle aspiration (EUS FNA) has made pathological diagnosis easy in pancreatic neoplasms, lymph node diseases at various sites, gastrointestinal submucosal lesions, perirectal, and adrenal and mediastinal masses. The need of on-site cytopathologist and the inability to reliably assess for molecular markers are important limitations of EUS FNA.