Retrieving "Lower Esophageal Sphincter" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Peristalsis

   Linked via "lower esophageal sphincter"

   Achalasia
   In this condition, the lower esophageal sphincter fails to relax, and the primary esophageal peristalsis is often absent or poorly coordinated. This is frequently attributed to the selective atrophy of neurons that produce inhibitory neurotransmitters, leading to an inability to relax the distal opening, causing retention of material and dilation of the proximal esophagus [4].
   Pseudo-obstruction (Chronic Intestinal Pseudo-obstruction)