Iwakiri K, et al.: The appearance of rosette-like esophageal folds (′′esophageal rosette′′)in the lower esophagus after a deep inspiration is a characteristic endoscopic finding of primary achalasia. J Gastroenterol 45:422-425, 2010
Shiwaku H, et al.: New endoscopic finding of esophageal achalasia with ST Hood short type: Corona appearance. PLoS One 13: e0199955, 2018
Minami H, et al.: New endoscopic indicator of esophageal achalasia : ′′pinstripe pattern′′. PLoS One 10:e0101833, 2015