{'fraction_non_alphanumeric': 0.026917900403768506, 'fraction_numerical': 0.026917900403768506, 'mean_word_length': 5.0, '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}}
Sacrococcygeal teratomas in Lagos, Nigeria: relationship of age, sex, clinical type and histopathology to prognosis in 30 cases.

From 1973 to 1986, 30 cases of sacrococcygeal teratomas were seen at the Lagos University Teaching Hospital (LUTH). 67% of the tumours were benign and 33% malignant. There were 25 girls and 5 boys. Majority of the benign cases were operated before the age of 3 months and all had types I & II lesions. All the patients with malignant tumours had significant presacral and endopelvic components; some of these presented clinically with urinary retention, constipation, inability to walk and neurologic deficit. Our surgical experience is compared with the reports from other centres both within and outside Africa.