Sigmoidoscopy Material

• When examining material obtained from sigmoidoscopy, which parasite can be specifically detected?

  = Entamoeba histolytica
• Material collected from ulcers during sigmoidoscopy can be examined by:

  = Both direct wet preparations and permanent stains
• Timing is critical when examining sigmoidoscopy material for Entamoeba histolytica because:

  = The trophozoite stage is fragile and deteriorates quickly
• Besides Entamoeba histolytica, what other parasites may be recovered from sigmoid colon material?

  = Coccidian parasites and microsporidia
• Which method can be used to collect material from ulcers during sigmoidoscopy?

  = Aspiration
• What are the recommended techniques for examining sigmoidoscopy material for Entamoeba histolytica?

  = Direct wet preparations and permanent stains
• When examining sigmoidoscopy material for specific parasites, which is true about the trophozoite stage of Entamoeba histolytica?

  = It is fragile and deteriorates quickly
• What can colon biopsy material be collected for?

  = Examination for suspected organisms
• The processing methods used for colon biopsy material depend on:

  = The suspected organism
• Sigmoidoscopy material, including material from ulcers and colon biopsies, can be valuable for detecting infections caused by:

  = Entamoeba histolytica