{'fraction_non_alphanumeric': 0.020737327188940093, 'fraction_numerical': 0.0069124423963133645, 'mean_word_length': 5.304347826086956, '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}}
Sequential chemotherapy and radiotherapy for patients with squamous cell carcinoma of the esophagus

Background. Despite surgical improvements the prognosis of patients with squamous cell carcinoma (SCC) of the esophagus remains poor, with a 5‐year survival rate of less than 20%. Most patients do not undergo surgery with curative intent. The aim of this study was to assess the toxicity and efficacy of sequential chemoradiotherapy.