Follow‐up CT of “Reversed Halo Sign” in SARS‐CoV‐2 Delta VOC pneumonia: A report of two cases

2021 ◽  
Author(s):  
Jing Wu ◽  
Jie Tang ◽  
Tao Zhang ◽  
Yu‐Chen Chen ◽  
Chao Du
Keyword(s):  
Halo Sign ◽  
Reversed Halo Sign

scholarly journals The Reversed Halo Sign in COVID-19 Pneumonia

2020 ◽  
Author(s):  
Huifang Zhao ◽  
Ting Liang ◽  
Carol C. Wu ◽  
Chao Jin ◽  
Zhe liu ◽  
...  
Keyword(s):  
Symptom Onset ◽  
Time Course ◽  
Halo Sign ◽  
Moderate Disease ◽  
Key Points ◽  
Reversed Halo Sign ◽  
Critical Patients ◽  
Peripheral Aspect ◽  
Parenchymal Abnormalities

Abstract ObjectivesTo evaluate the frequency and time course of RHS on CT in patient with COVID-19 pneumonia.Materials and methodsA total of 147 patients with COVID-19 pneumonia were divided into mild, moderate, severe and critical categories. The number, location, shape, wall appearance of RHS on CT were analyzed. Other parenchymal abnormalities include GGO, consolidation and linear opacity were also recorded.ResultsRHS was observed in 37 (25.2%) of 147 patients and it was more common in patients with moderate disease than severe or critical disease (31.3% vs. 13.0%, P = 0.019). Time from symptom onset to appearance of RHS was 9 ± 5 days in moderate patients and 14 ± 8 days in severe/critical patients. A total of 64 RHS lesions were identified and the majority of lesions were located in peripheral aspect of lungs (55, 85.9%) and lower lobes (52, 81.2%). All lesions with RHS were round or oval-shaped. The rim of RHS were smooth in 54 (84.4%) and irregular in 10 (15.6%). Follow-up CT scans of 27 patients (50 lesions) showed 43(86%) lesions gradually resolved or developed into GGO and linear opacities and 7(14%) lesions remained unchanged appearance.ConclusionsRHS occurred sooner after symptom onset and with higher frequency in patients with moderate compared to those with severe or critical disease. RHS may represent a favorable prognostic sign in COVID-19 pneumonia.Key Points• 37 (25.2%) of 147 patients with COVID-19 pneumonia had RHS on at least one CT• RHS was more prevalent in patients with moderate disease than those with severe or critical disease• RHSs (78.4%) mostly occurred within 2 weeks after symptom onset

scholarly journals The Reversed Halo Sign: Pathognomonic Pattern of Pulmonary Mucormycosis in Leukemic Patients With Neutropenia?

2013 ◽  
Vol 58 (5) ◽  
pp. 672-678 ◽  
Author(s):  
C. Legouge ◽  
D. Caillot ◽  
M.-L. Chrétien ◽  
I. Lafon ◽  
E. Ferrant ◽  
...  
Keyword(s):  
Pulmonary Mucormycosis ◽  
Halo Sign ◽  
Reversed Halo Sign

scholarly journals Spontaneous pneumothorax followed by reversed halo sign in immunocompromised patient with pulmonary mucormycosis

2015 ◽  
Vol 9 ◽  
pp. 22-25 ◽  
Author(s):  
Majid Moosavi Movahed ◽  
Hadiseh Hosamirudsari ◽  
Fariba Mansouri ◽  
Farzaneh Mohammadizia
Keyword(s):  
Spontaneous Pneumothorax ◽  
Immunocompromised Patient ◽  
Pulmonary Mucormycosis ◽  
Halo Sign ◽  
Reversed Halo Sign

scholarly journals Reversed Halo Sign on CT as a Presentation of Lymphocytic Interstitial Pneumonia

2013 ◽  
Vol 7 (10) ◽  
Author(s):  
Marcus Denard Freeman ◽  
Joseph R. Grajo ◽  
Neel D. Karamsadkar ◽  
Thora S. Steffensen ◽  
Todd R. Hazelton
Keyword(s):  
Interstitial Pneumonia ◽  
Halo Sign ◽  
Lymphocytic Interstitial Pneumonia ◽  
Reversed Halo Sign

scholarly journals CT morphological features of the reversed halo sign in pulmonary paracoccidioidomycosis

2015 ◽  
Vol 88 (1055) ◽  
pp. 20150246 ◽  
Author(s):  
Miriam Menna Barreto ◽  
Edson Marchiori ◽  
Andrea de Brito ◽  
Dante Luiz Escuissato ◽  
Bruno Hochhegger ◽  
...  
Keyword(s):  
Morphological Features ◽  
Halo Sign ◽  
Reversed Halo Sign

scholarly journals “Reversed Halo” Sign on Chest Computed Tomography in COVID-19 Pneumonia

2021 ◽  
Vol 37 (4) ◽  
pp. 261-267
Author(s):  
Defne Gürbüz ◽  
Melis Koşar Tunç ◽  
Hülya Yıldız ◽  
Asım Kalkan ◽  
M. Taner Yıldırmak ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Chest Computed Tomography ◽  
Halo Sign ◽  
Reversed Halo Sign

scholarly journals The Reversed Halo Sign and the Bronchus Sign: The Eyes See Only What the Mind Knows

2019 ◽  
Vol 16 (9) ◽  
pp. 1203-1203
Author(s):  
Valliappan Muthu ◽  
Sahajal Dhooria ◽  
Inderpaul Singh Sehgal ◽  
Kuruswamy Thurai Prasad ◽  
Ritesh Agarwal
Keyword(s):  
Halo Sign ◽  
Reversed Halo Sign ◽  
The Mind

scholarly journals "Reversed halo sign" on 3D CT in COVID-19

2020 ◽  
Vol 26 (4) ◽  
pp. 379-379 ◽  
Author(s):  
Tumay Bekci ◽  
Keyword(s):  
3D Ct ◽  
Halo Sign ◽  
Reversed Halo Sign

scholarly journals Reversed halo sign in active pulmonary tuberculosis

2014 ◽  
Vol 2014 (jul25 1) ◽  
pp. bcr2013202981-bcr2013202981 ◽  
Author(s):  
L. Nattusamy ◽  
K. Madan ◽  
A. S. Bhalla ◽  
R. Guleria
Keyword(s):  
Pulmonary Tuberculosis ◽  
Active Pulmonary Tuberculosis ◽  
Halo Sign ◽  
Reversed Halo Sign
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