preferred_name: Obstruction of Eustachian tube from cholesteatoma, polyp or other osseous lesion
preferred_name_lc: obstruction of eustachian tube from cholesteatoma, polyp or other osseous lesion
label: Obstruction of Eustachian tube from cholesteatoma, polyp or other osseous lesion
label_lc: obstruction of eustachian tube from cholesteatoma, polyp or other osseous lesion