Phreno-oesophageal muscle anomaly or rudimentary oesophageal sphincter?
D003964:Diaphragm / Q000002:abnormalities*; D004943:Esophagogastric Junction / Q000002:abnormalities*; D004947:Esophagus / Q000002:abnormalities*; D005260:Female; D006801:Humans; D008875:Middle Aged