Heterotopic gastric mucosa at the (cervical) inlet of the oesophagus. It is unusual, with an incidence of <1%, though it may be easily miss with rapid endoscopy. Endoscopically, it has a pink, velvety appearence in distinction to the pale-coloured, squamous-lined oesophagus. The heterotopic gastric mucosa is susceptible to the same conditions as normal gastric mucosa such as Helicobacter pylori infection, peptic ulceration, intestinal metaplasia and malignancy. In at least one series, inlet patch is associated with oesophagitis and Barrett's oesophagus (at the conventional distal oesophagus).
- ↑ Gutierrez O, Akamatsu T, Cardona H, Graham DY, El-Zimaity HM. Helicobacter pylori and hetertopic gastric mucosa in the upper esophagus (the inlet patch). The American journal of gastroenterology. 2003 Jun; 98(6):1266-70.(Link to article – subscription may be required.)
- ↑ Byrne M, Sheehan K, Kay E, Patchett S. Symptomatic ulceration of an acid-producing oesophageal inlet patch colonized by helicobacter pylori. Endoscopy. 2002 Jun; 34(6):514.(Link to article – subscription may be required.)
- ↑ Berkelhammer C, Bhagavan M, Templeton A, Raines R, Walloch J. Gastric inlet patch containing submucosally infiltrating adenocarcinoma. Journal of clinical gastroenterology. 1997 Dec; 25(4):678-81.
- ↑ Tang P, McKinley MJ, Sporrer M, Kahn E. Inlet patch: prevalence, histologic type, and association with esophagitis, Barrett esophagus, and antritis. Archives of pathology & laboratory medicine. 2004 Apr; 128(4):444-7.