{'fraction_non_alphanumeric': 0.03929539295392954, 'fraction_numerical': 0.025745257452574527, 'mean_word_length': 4.598484848484849, '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}}
Diffuse large B-cell lymphoma in the psoas muscle

A 78-year-old man with a history of aphasia caused by cerebral infarction came to our hospital because of persistent progressive left lower back pain for 1 week, which had radiated through the left buttock and down the left thigh.

On clinical examination, he was in the right lateral decubitus position on a bed in a psoas posture with a body temperature of 36.7°C. Laboratory results revealed leucocytosis (9.71×109/L), and elevated lactate dehydrogenase (415 IU/L) and creatine kinase (255 IU/L) levels.

Contrast-enhanced CT of the abdomen after plain CT revealed a swollen left psoas muscle that was enhanced homogeneously (figure 1, arrows), indicating tumours in the left psoas. …