title: Cytologic diagnosis of gastric submucosal lesions by endoscopic ultrasound-guided fine-needle aspiration: A single center experience in Saudi Arabia.
abstract: OBJECTIVE
  Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) sampling has become standard practice for the diagnosis of submucosal gastrointestinal (GI) lesions. The aim of this study was to determine the utility of EUS-guided FNA cytology in the diagnosis of deeply seated gastric mass lesions.
  
  
  METHODS
  Thirteen patients with deeply seated gastric mass lesions were diagnosed by EUS-FNA. Adequate cytology material was present in all cases. Cell blocks were available in 10 cases. Surgical resections were performed in 8 cases. Immunohistochemical (IHC) studies were done on cell blocks in 9 cases and on 6 resected specimens. Seven cases has proved to be GI stromal tumors (GIST), in four of them, cell blocks were available, and resection for GIST was performed in 5 cases. IHC stains that were performed in cytology, as well as resection specimens, revealed similar results in each patient.
  
  
  CONCLUSIONS
  EUS-FNA cytology, when combined with a histologic assessment of cell blocks provides accurate and efficient tissue diagnosis of a wide variety of deeply seated gastric mass lesions.
authors.affiliation: Division of Pathology, King Khalid University Hospital, King Saud University, Riyadh; Division of Pathology, Alfaisal University, Riyadh, Saudi Arabia.
authors.forename: Emad
authors.initials: E
authors.lastname: Raddaoui
authors.forename: Majid A
authors.initials: MA
authors.lastname: Almadi
authors.forename: Abdulrahman M
authors.initials: AM
authors.lastname: Aljebreen
authors.forename: Faisal
authors.initials: F
authors.lastname: Alsaif
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003584:Cytological Techniques / Q000379:methods*; D061765:Endoscopic Ultrasound-Guided Fine Needle Aspiration / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012529:Saudi Arabia; D013272:Stomach Diseases / Q000175:diagnosis*