Incidental radiological findings suggestive of COVID-19 in asymptomatic patients

Table 1 Summary of incidental asymptomatic COVID-19 studies

Ref.	Imaging modality used	Number of incidental asymptomatic COVID-19 cases/total number of cases	Setting
Ali et al[41]	18F-FDG PET-CT	87/764; only 3 of which were RT-PCR negative	Asymptomatic oncology patient
Ferrando-Castagnetto et al[47]	18F-FDG PET-CT	1	COVID-19 asymptomatic cancer patient for routine oncological indication
Pallardy et al[44]	18F-FDG PET-CT	20/529	COVID-19 asymptomatic cancer patients for routine oncological indication
Wakfie-Corieh et al[68]	18F-FDG PET-CT	23/1079, only 14 of which were RT-PCR positive	COVID-19 asymptomatic cancer patients for routine oncological indication
Mo et al[66]	18F-FDG PET-CT	1	COVID-19 asymptomatic cancer patients for routine oncological indication
Franceschi et al[67]	18F-FDG PET-CT	1	Asymptomatic diffuse large B-cell lymphoma patient
Setti et al[64]	18F-FDG PET-CT	5/13	COVID-19 asymptomatic cancer patients
Albano et al[65]	18F-FDG PET-CT	6/65 patients	COVID-19 asymptomatic oncology patient
	SPECT-CT	1/12 patients	Asymptomatic patient with treated differentiated thyroid carcinoma
Angelini et al[42]	Whole-body MRI	1	COVID-19 asymptomatic multiple myeloma patient under follow-up
Deen et al[57]	Liver MRI (basal chest cuts)	1	Emergency patient with hepatic focal lesion
Di Girolamo et al[43]	MRI of the abdomen	1	COVID-19 asymptomatic cancer patient for routine oncological indication
Ap Dafydd et al[22]	Chest CT	9/240 of CTs were reported as abnormal, only one of which was RT-PCR positive.	Asymptomatic patients prior to major thoracic or abdominal surgery
Siegel et al[59]	CT of the abdomen and pelvis (basal chest cuts)	3	Patients presented to emergency department with abdominal pain
Ali et al[26]	Chest CT (for other causes)	44	COVID-19 asymptomatic cases
Hyne et al[60]	Cerebral angiography	1	Patient presented to emergency department with neurological manifestations

COVID-19: Coronavirus disease 2019; FDG-PET/CT: Fluorodeoxyglucose-positron emission tomography-computed tomography; SPECT/CT: Single photon emission computed tomography; MRI: Magnetic resonance imaging.