{'fraction_non_alphanumeric': 0.018711018711018712, 'fraction_numerical': 0.008316008316008316, 'mean_word_length': 4.950617283950617, '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}}
[Valves and valve pockets of the thoracic duct: sites of stagnation of neoplastic cells].

The thoracic duct was excised and histologically examined in 53 patients who died due to cancer. 11 specimens showed intraluminal cancer cells without signs of tumor migration through the duct wall. The malignant cells were either unattached in the lumen, caught within the valve pocket or had invaded the valve tissue. These findings add to the importance of lymphotropic cytotoxic agents.