{'fraction_non_alphanumeric': 0.04505888376856119, 'fraction_numerical': 0.02867383512544803, 'mean_word_length': 5.203174603174603, '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}}
High-resolution computed tomography in a patient with COVID-19 with non-diagnostic serial radiographs.

A 63-year-old Chinese man from Wuhan, China, presented to the emergency department of Princess Margaret Hospital, Hong Kong, in January 2020 with coryzal symptoms. He was afebrile with unremarkable respiratory examination results. He was admitted to an isolation ward for further investigation. He subsequently developed a fluctuating fever up to 38.5°C after admission and passed loose stool intermittently. His oxygen saturation levels were normal throughout hospitalisation. Supportive treatment and empirical antibiotics (amoxicillin-clavulanate) were administered. Coronavirus disease 2019 (COVID-19) was suspected, and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was confirmed the next day by throat swab and nasopharyngeal aspirate tests. Stool culture was negative for SARS-CoV-2 and other pathogens. Blood test results revealed lymphopoenia (0.6 × 109/L). Total white blood cell count (4.4 × 109/L), absolute neutrophil count (3.4 × 109/L), monocyte count (0.3 × 109/L), and eosinophil count (0.0 × 109/L) were normal. Liver and renal function test results, C-reactive protein level, and serum calcium and phosphate levels were normal. Daily portable chest radiographs over the next 5 days were unremarkable (Fig 1). Chest highresolution computed tomography (HRCT) was performed to assess for pulmonary involvement. High-resolution computed tomography performed 6 days after admission (Fig 2) demonstrated a few patchy subpleural ground-glass opacities in both lungs. No other abnormalities were detected. Subsequent follow-up chest radiograph (Fig 3) remained clear. The patient’s fever subsided 11 days after admission. No supplemental oxygen was required. Serial nasopharyngeal aspirate sample tests turned negative 22 days after admission. The patient was discharged from the hospital 27 days after admission.