title: A study of the frequency of recovery of unexpected Giardia lamblia and Cryptosporidium from duodenal aspirates taken during routine upper endoscopy.
abstract: In this study, our objective was to determine whether the microscopic examination of duodenal aspirates recovered during routine upper endoscopy in unselected, immunocompetent patients, would disclose unsuspected Giardia lamblia or Cryptosporidium.
  
  
  METHODS
  Prospective, cross-sectional study to determine the prevalence of duodenal parasitosis.
  
  
  METHODS
  Endoscopy unit in a university hospital.
  
  
  METHODS
  One hundred and thirty-one unselected, immunocompetent patients undergoing upper endoscopy.
  
  
  METHODS
  Microscopic examination of duodenal aspirates, obtained during upper endoscopy. No pathogenic or commensal parasite was identified in any patient.
  
  
  CONCLUSIONS
  No case of unsuspected parasitosis was found in the present study. On the basis of our findings, we do not recommend routine collection of duodenal aspirates during upper endoscopy.
authors: Department of Medicine, Baylor College of Medicine, Houston, Texas.
authors: F C
authors: FC
authors: Ramirez
authors: J E
authors: JE
authors: Clarridge
authors: M C
authors: MC
authors: Heiser
authors: P A
authors: PA
authors: Michaletz
authors: J T
authors: JT
authors: Schwartz
authors: Z A
authors: ZA
authors: Saeed
authors: D Y
authors: DY
authors: Graham
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000818:Animals; D003430:Cross-Sectional Studies; D003458:Cryptosporidium / Q000302:isolation & purification*; D003955:Diagnostic Tests, Routine; D004386:Duodenum / Q000469:parasitology*; D016099:Endoscopy, Gastrointestinal; D005260:Female; D016829:Giardia lamblia / Q000302:isolation & purification*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies