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The Z line in the esophagus is the term for a faint zig-zag impression at the gastro-esophageal junction that demarcates the transition between the stratified squamous epithelium in the esophagus and the intestinal epithelium of the gastric cardia (the squamocolumnar junction).
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- Case 1a
The normal squamocolumnar junction can be seen in the distal...
- Case 1b
The zig-zag of the Z line is outlined in red. Prev: 1; 2; 3;...
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In BE, the squamous epithelium of the distal esophagus is replaced by columnar epithelium, thus displacing the squamocolumnar junction, also called the Z-line, orally, and giving rise to a columnar lined esophagus (CLE). In BE, there is an increased risk of developing esopha-geal adenocarcinoma (EAC) [2].
26 lip 2022 · The main aim of this study is automatic Z‐line extraction using endoscopic images leading to segmentation of the early BE stage.
Endoscopic appearance of the Z-line at the gastro-esophageal squamous-columnar junction has been classified as Z-line appearance (ZAP) grading system.1 The four graded ZAP grading system has been shown to correlate with the presence of intestinal metaplasia (IM) and the immunohistochemical cytokeratin 7/20 staining pattern at lower esophagus in ...
Since gastroesophageal reflux is known to be of etiological importance in both Barrett's esophagus and esophageal adenocarcinoma, we aimed to study which endoscopic alterations at the Z-line can be attributed to a previous history of reflux symptoms.
Morgan M, Z line. Case study, Radiopaedia.org (Accessed on 17 Oct 2023) https://doi.org/10.53347/rID-78027
1. The gastro-esophageal junction (GEJ). 2. The diaphragmatic pinch. 3. The squamo-columnar junction (SCJ) or Z-line. In Western guidelines, the upper end of the gastric folds (GF) is the landmark for the GEJ. The position of most proximal margin of the GF is assessed in deflate
