A crescent-shaped space about 12 mm wide, just above the costal margin. It is due to gas in the stomach which produces a vesiculotympanitic sound.
- O. Fraentzel:
Bemerkungen über den halbmondförmigen Raum und über den Vocalfremitus.
Berliner klinische Wochenschrift, 1868, 5: 509-511.
Reported by Oscar Maximilian Victor Fraentzel (1838-1894). Fraentzel was Traube's pupil and his assistant from 1867 to 1869. He wrote this report from Traube's clinic. It seems that Traube himself never reported his discovery.
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