{'fraction_non_alphanumeric': 0.017543859649122806, 'fraction_numerical': 0.003189792663476874, 'mean_word_length': 5.474226804123711, '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}}
Management of Adenoid Cystic Carcinoma of Distal Trachea

Summary Tracheal neoplasms occur infrequently, the majority of primary tracheal tumours in adults are malignant, and in 40% of cases it is adenoid cystic carcinoma, which can be asymptomatic for a long period of time. Surgical treatment can be justified even in advanced disease, because progression of tracheal tumour usually causes obstruction of airways. Improved long-term outcome seems to follow combined surgical resection and full-dose radiotherapy. Patients after resection of adenoid cystic carcinoma need careful and long-term observations to detect a relapse