TY - JOUR
AU - AbdullGaffar, Badr
AB - Dear Editor,Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) is a standard diagnostic procedure commonly used in gastrointestinal, hepatobiliary, pancreatic, and thoracic lesions [1]. It has overall good specificity, sensitivity, and accuracy rates [1, 2]. Technically, this is achieved by following a sequence of steps to increase the diagnostic yield and reduce the presence of obscuring blood, lubricant, mucus, and cellular contaminants [1-3]. However, certain technical problems may arise leading to unexpected limitations and suboptimal smears. One of the major problems is contamination. The most common contaminants are gastric and duodenal epithelial cells [1]. Noncellular contaminants include blood, lubricant, and mucus [3]. These contaminants are usually external to endoscopy and EUS-FNA devices. However, metal particles from needles have been reported as potential contaminants [4]. We report our cytologic observation of needle/stylet-derived metal contaminants during pancreatic and gastroesophageal EUS-FNA procedures. Our aim is to highlight the potential diagnostic pitfalls and technical problems associated with these residual metal oxides in smears and cell blocks.In our practice, we observed the presence of foreign-body materials in some smears and cell blocks from EUS-FNA pancreatic and gastroesophageal samples. Routinely, we prepare conventional smears stained with hematoxylin and eosin (H&E) for EUS-FNA specimens. We also collect samples for 
TI - Residual Metal Contaminants in Endoscopic Ultrasound-Guided Fine-Needle Aspiration
JF - Acta Cytologica
DO - 10.1159/000503915
DA - 2020-07-01
UR - https://www.deepdyve.com/lp/karger/residual-metal-contaminants-in-endoscopic-ultrasound-guided-fine-6byIbftOCS
SP - 394
EP - 396
VL - 64
IS - 4
DP - DeepDyve
ER -