Background: The diagnosis of achalasia can occasionally be difficult because of the low prevalence of apparent endoscopic abnormal findings, such as dilation and food residue, and lack of "esophageal rosette" in some patients. We have found a new endoscopic finding "Gingko leaf sign", which consists of not being able to see the full extent of the esophageal palisade vessels and a Gingko leaf-shaped morphology of a longitudinal section of the esophagogastric junction at the end of a deep inspiration, in some achalasia patients without "esophageal rosette". The aim of the study was to investigate the prevalence of "Gingko leaf sign" in these patients.
Methods: We retrospectively compared the prevalence of "Gingko leaf sign" between 11 achalasia patients without "esophageal rosette" and 22 age-/gender-matched healthy subjects. The diagnoses of achalasia were based on the results of high-resolution manometry. We also investigated the characteristics of the patients with "Gingko leaf sign".
Results: All the patients had "Gingko leaf sign", in contrast to none of the healthy subjects (p < 0.001). Four of 11 patients did not require any therapy. Six of seven patients did not relapse after balloon dilatation, but one patient required per-oral endoscopic myotomy 8 months after balloon dilatation.
Conclusion: All our achalasia patients without "esophageal rosette" had "Gingko leaf sign". It is possibly a useful endoscopic finding in achalasia patients without "esophageal rosette".
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