{'fraction_non_alphanumeric': 0.015723270440251572, 'fraction_numerical': 0.012578616352201259, 'mean_word_length': 5.184466019417476, '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}}
Thymoma and thymic germinal center.

1. Ten cases in which the attached thymic tissues were histologically investigated from 91 cases of thymomas were reviewed with brief description of the gross appearance, histological findings and clinical complications.2. Thymic germinal centers were found in 7 cases of which 5 cases were associated with myasthenia gravis.3. One case of thymoma with the presence of a germinal center in the neoplastic stroma was added.4. The significant relationship between thymomas and thymic germinal centers is postulated with a discussion of the relationship of thymic abnormalities and autoimmune diseases.