{'fraction_non_alphanumeric': 0.013539651837524178, 'fraction_numerical': 0.0, 'mean_word_length': 5.556962025316456, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
CHEMICAL CLOSURE OF CHRONIC TYMPANIC MEMBRANE PERFORATIONS

Background:  The purposes of closing chronic dry perforations of the tympanic membrane are to improve hearing and prevent middle ear infections. Before the use of the operating microscope and improved instrumentation, tympanic membrane perforations were closed by application of chemicals or with a temporary patch. Today, although surgery is the treatment of choice, small dry perforations may be successfully closed by chemical means in an office setting.