What is the role of blind brush cytology in the diagnosis of esophagitis?

Updated: May 28, 2020
  • Author: Deepika Devuni, MD; Chief Editor: BS Anand, MD  more...
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Blind brush cytology has been used in the past; however, with the availability of esophagogastroduodenoscopy (EGD), its use has diminished. It is performed by passing a cytology brush in a sheath similar to a nasogastric or orogastric tube. Once the end of the catheter is in the mid esophagus, the brush is extended and brushings are taken. Finally, the brush is withdrawn back into the sheath. This is performed without any direct visualization, as occurs when brushings are performed during an EGD.

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