Table 1.

Risk factors and clinical characteristics of Nocardia COVID-19 coinfected patients.

Author (year) [reference]		Sex & Age	Risk factors	Days after COVID-19 diagnosis	Clinical picture	CT scan features
Colaneri (2021) [6]		Woman, 45 years	Untreated HIV/HCV IDU	5 days	Fever, coughing, dyspnea, fatigability (10 days). Oxygen saturation at room air: 94%	Multiple necrotic core lesions in both lungs, kidneys and soft tissues with peripheral contrast enhancement
Laplace (2021) [7]		Male, 86 years	Type 2 DM, COPD, Crohn´s disease	13 days	Acute dyspnea, fever, productive cough	Dense consolidation with air bronchograms in lower lung lobes
Atemnkeng (2021) [8]		Male, 63 years	Morbid obesity, Type 2 DM	32 days	Worsening shortness of breath. Oxygen saturation at room air: 77%	Near-complete opacification of the left hemithorax with minimal sparing of the apical region MRI: multiple bilateral ring- enhancing lesions in the brain
Arif (2021) [9]		Woman, 61 years	Type 2 DM, hypertension, HF	10 days	Dyspnea	Right upper lobe 3.3 x 3.2 cm mass and a left upper lobe 1.9 x 1.5 cm nodule
Driscoll (2022) [10]		Male, 16 years	Bronchiectasis Pseudomonas aeruginosa infection	6 days	Fever, dyspnea, cough, and lethargy	Left lower lobe opacification but no necrosis or pulmonary embolus
Ortiz (2023) [Present case]		Male, 86 years	Type 2 DM, hypertension, myeloma, COPD, atrial flutter, CKD	11 days	Increased productive cough, dyspnea Oxygen saturation at room air: 82%	Multifocal and bilateral cavitated condensations. Ground glass pattern areas and distal bronchial thickening

Type 2 DM: type 2 diabetes mellitus. COPD: Chronic obstructive pulmonary disease. CKD: Chronic kidney disease. HF: heart failure. HIV/HCV: chronic hepatitis C virus & HIV coinfected. IDU: Injecting drug user. SLE: Systemic lupus erythematosus.