Erratum: Chest CT Findings in Cases from the Cruise Ship “Diamond Princess” with Coronavirus Disease 2019 (COVID-19)

Abstract

This erratum corrects an error in the number of cases in the study. The number of cases decreased from 112 to 104. These eight cases need to be omitted from the study for the following reasons:After submission of the manuscript, three persons withdrew their consent for research on discharge. As per IRB approval documentation of the study, three people need to be omitted from the study. Authors were notified about their withdrawal from the IRB only after online publication.The authors double-counted five cases because they had different names, and different study numbers were assigned. Many of the passengers of the cruise ship spoke neither English nor Japanese, and the names they were given at the initial triage on admission later proved to not be the correct ones. The PACS system recorded these persons as different cases for their follow-up study, and the study number was differently assigned for those cases.The authors conducted calculations and statistical analysis for these 104 cases and corrected the numbers and percentages in the Results section. Other parts including Conclusion were not changed.These changes were made online on April 8, 2020. Data changes are in bold.In the first two Key Points, Of 104 cases analyzed, 76 (73%) were asymptomatic, 41 (54%) of which had pneumonic changes on CT. Other 28 (27%) cases were symptomatic, 22 (79%) of which had abnormal CT findings. Asymptomatic cases showed more GGO predominance over consolidation (83%), while symptomatic cases were more likely to show a consolidation predominance over GGO (41%).Abstract, Materials and Methods, This retrospective study comprised 104 cases (mean age, 62 years ± 16, range 25-93) with COVID-19 confirmed with RT-PCR.Abstract, Results, Of 104 cases, 76 (73%) were asymptomatic, 41 (54%) of which had lung opacities on CT. Other 28 (27%) cases were symptomatic, 22 (79%)

Normal chest CT in 1091 symptomatic patients with confirmed Covid-19: frequency, characteristics and outcome

“…In 58 asymptomatic patients with RT-PCR-confirmed COVID-19, Meng et al found chest CT abnormalities in all patients, with no CT remaining normal [ 17 ]. These findings are counterbalanced by the report of 76 asymptomatic patients from the Diamond Princess, where Inui et al found chest CT lesions in 41 of them, with 35 (46%) chest CT remaining normal [ 18 ]. This range of normal examinations is also confirmed by Bandirali et al in 170 chest radiographs in asymptomatic patients, with 70 (41%) remaining normal [ 19 ].…”

Inter-reader agreement of high-resolution computed tomography findings in patients with COVID-19 pneumonia: A multi-reader study

“…Chest HRCT plays an important role in the detection of COVID-19 pneumonia, with reported sensitivity ranging from 61% [ 4 ] to 99% in a study performed in a setting with high disease prevalence [ 5 ]. Typical findings include GGO and consolidation, involving multiple lobes of both lungs [ 6 ], as well as OP pattern [ 7 ].…”

Canadian Society of Thoracic Radiology/Canadian Association of Radiologists Consensus Statement Regarding Chest Imaging in Suspected and Confirmed COVID-19

“…26 Although not a study of incidental findings on chest CT, imaging findings in 112 cases of COVID-19-positive patients on board the “Diamond Princess” cruise ship were analyzed. 27 Fifty-four percent of asymptomatic patients who tested positive for COVID-19 had abnormal findings on chest CT. No significant differences in age, gender, or comorbidities were identified in symptomatic versus asymptomatic cases. Asymptomatic patients showed a lower CT severity score and predominant GGO, whereas symptomatic patients showed predominant consolidation.…”