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Concomitant COVID-19 and pulmonary tuberculosis: computed tomography aspects
Alexandre Dias Mançano1, Gláucia Zanetti2, Edson Marchiori2
1RA Radiologia - Grupo Sabin Medicina Diagnóstica, Brasília, DF, Brazil.
Concurrent COVID-19 and pulmonary tuberculosis is rare but detectable on CT scans. Early recognition is crucial as dual infection is associated with higher mortality rates.
Area of Science:
- Radiology
- Infectious Diseases
- Pulmonology
Background:
- The COVID-19 pandemic presents diagnostic challenges, particularly in co-infections.
- Pulmonary tuberculosis (TB) shares some overlapping symptoms and imaging findings with viral pneumonia.
Purpose of the Study:
- To investigate the relationship between COVID-19 and pulmonary TB.
- To identify computed tomography (CT) imaging features of patients with both conditions.
Main Methods:
- Retrospective, cross-sectional observational study.
- Analysis of chest CT scans from 360 RT-PCR confirmed COVID-19 patients.
Main Results:
- COVID-19 and TB findings were observed concurrently in 1.1% of patients.
- Follow-up CT scans showed cavitary lesions with bronchogenic spread or fibrous scarring progression.
- Mycobacterium tuberculosis isolation confirmed TB diagnosis.
Conclusions:
- CT findings can suggest concurrent COVID-19 and TB, though rare.
- Radiologists must consider this co-infection possibility.
- Simultaneous COVID-19 and TB infection may lead to increased mortality.
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