1. Introduction

As of December 2019, a new case of Coronavirus infection has occurred in Wuhan, Hubei province, China [1]. The new coronavirus was identified on January 6, 2020 and was called 2019-nCoV [2]. Coronaviruses are enveloped RNA viruses that cause respiratory, enteric, hepatic, and neurological diseases that are common among birds, humans, and other mammals [3]. Bats are considered the most likely source for the new coronavirus [4]. Six coronavirus species are known to cause human disease. The four common types cause common cold symptoms. The other two types of severe acute respiratory syndrome coronavirus (SARS-CoV) and Middle East respiratory syndrome coronavirus (MERS-CoV) are of zoonotic origin and can cause fatal diseases [5]. Although the mortality of Covid-19 is lower than that of SARS-CoV and MERS-CoV, the number of confirmed Covid-19 cases has increased significantly [6]. As of April 3, 2020, a total of 82802 Covid-19 cases and 3331 Covid-19 deaths were reported in China. Worldwide, 972303 cases of Covid-19 and 50321 Covid-19 related deaths have been reported [7]. Early detection of virus spread pathways, controlling the spread through isolation and disinfection is the most effective way to combat the Covid-19 outbreak [8]. Radiological imaging plays an important role in the diagnosis and treatment of pneumonia, which is the clinical presentation of Covid-19 [6]. Chest radiographs show low-density pneumonia foci (viral pneumonia), which mostly involve bilateral mid-lower zones in this disease. Chest X-ray sensitivity is low (30-60%) [9]. However, normal radiography does not exclude the presence of pneumonia in the lung. In computed tomography (CT), the most common radiological finding is unilateral or bilateral ground glass appearance. In addition, consolidation, flagstone appearance, air bronchogram, vascular enlargement, airway changes, air bubble sign, subpleural line, pleural changes, halo sign, nodules, inverted halo sign (atoll sign), lymphadenopathy, pericardial effusion and fibrosis are among the findings. takes [10]. In cases with polymerase chain reaction (PCR) negative symptoms, CT may guide, and in patients with PCR positive patients, CT may be required. In this study, in the light of the literature, we examined the case that we hospitalized with fever, cough and chest pain, and we detected Covid-19 pneumonia and left pneumothorax in the examinations.

2. Case Report

A 24-year-old male patient was admitted to the emergency department with complaints of fever, cough, shortness of breath and increased pain in the left hemithorax. His general condition was good, conscious, cooperative and orientated. Blood pressure arterial 110/70 mmHg, pulse 92/min, respiratory rate 20/min, fever 38.5°C, oxygen saturation (SpO2) with finger probe was 92%. In blood tests WBC: 12.06 103/uL, NEU lymphocyte: 1.59 103/uL, HGB: 15.4 g/dL, HCT: 42.4%, PLT 188 103/uL, fasting blood sugar: 137.7 mg/dL, urea: 34.3 mg/dL, Creatinine: 0.91 mg/dL, ALT (SGPT): 13 U/L, AST (SGOT): 11 U/L, LDH: 150 U/L, procalcitonin: 0.043 ng/ml. During her physical examination, her breathing sounds decreased on the left. On radiological examination of the patient, consolidation and ground glass images were observed in the bilateral lower lobes and the accompanying left pneumothorax (Figure 1, 2, 3, 4). The patient with Glasgow Coma Scale (GCS) 15 was hospitalized with suspicion of Covid-19 and pneumothorax. The patient underwent tube thoracostomy from the left hemithorax lateral, and medical therapy and nasal oxygen therapy were started. On the second day, the fever remained at 38°C. Other vital signs were observed stably. There was no reproduction in the blood culture of the patient. Covid-19 positive was detected in the polymerase chain reaction analysis (PCR). On the third day, the patient's fever began to drop, it hovered around 37.5°C, oxygenated SpO2 was 95%. The control arterial blood gas was pH 7.33, PCO2 60.3, PO2 78.4. Vital findings remained stable. On the chest radiograph, the left lung was fully expanded. Infiltrations were continuing (Figure 5). Treatment and follow-up of the patient continues.

Figure 1: Pneumothorax view in left hemithorax on thorax CT.

Figure 2: Lung parenchyma view in thorax CT.

Figure 3: Bilateral infiltration view.

Figure 4: Ground glass in left lower lobe and pneumothorax in left hemithorax.

Figure 5: Posteroanterior chest x-ray after tube thoracostomy.

3. Discussion

The new coronavirus was identified and isolated by three groups of Chinese scientists. A consortium coordinated by W. Tan from the China Centers for Disease Control and Prevention (China CDC) achieved eight complete viral genome sequences by sequencing from RNA isolation and bronchoalveolar lavage fluid (BALF) in nine patients [11]. Although Covid-19 has a lower mortality rate than SARS-CoV and MERS-CoV, which are from the corona virus family, its spread rate is much higher than these viruses [6]. In 2019, the WHO-China Coronavirus disease joint mission report published the main signs and symptoms of Covid-19 as fever, dry cough, sputum complaint, shortness of breath, fatigue, muscle pain or arthralgia, headache and sore throat. The China Centers for Disease Control and Prevention (China CDC) identified 44 672 Covid-19 positive patients on February 14. 965 of them (2.2%) were under 20 and the mortality rate in this age group was 0.1%. 77.8% of the patients reported that they were between the ages of 30 and 69 [12]. Our patient was a 24-year-old young healthy man with no additional disease, previous operation and history of pneumothorax. In his complaints, he had high fever, cough, shortness of breath, and chest pain on the left.

Currently, the RT-PCR test is used as a standard in the definitive diagnosis of Covid-19 infection despite false negativity rates. Chest CT is also recommended by the Chinese National Health Commission for the clinical diagnosis of Covid-19. However, the final diagnosis of Covid-19 must be confirmed by positive RT-PCR or gene sequencing [13]. In the study conducted by Tao Ai et al., In those with RT-PCR positive CT; found the sensitivity to be 97% and to diagnose CT as 88% (888 patients) [14]. Due to its high sensitivity, chest CT is an important screening tool for suspected Covid-19 patients. In Covid-19 pneumonia, the finding seen in CT is GGO in the subpleural areas of the lower lobes [15]. These findings occur in the early stages of Covid-19 pneumonia, and this finding is caused by alveolar septal inflammation caused by infection [16]. Radiology imaging methods can be guiding in cases with RT-PCR negative but symptom. In PCR positive patients, imaging methods are needed again for the course of the disease. Increasing data and research over time will enable us to get to know this disease better.

In our patient's CT, there were bilateral irregular consolidation areas and ground-glass densities in the lower lobes. On the left, the ground glass was accompanied by pneumothorax. There was no underlying lung disease, smoking history, and structural abnormality in the body that would predispose our patient to pneumothorax formation. We think that in severe Covid-19 pneumonia, strong cough attacks that can cause widespread alveolar damage and a sudden increase in alveolar pressure may cause pneumothorax.

Sana S et al. They investigated imaging findings in 919 Covid-19 positive patients and detected ground-glass densities in 88% of cases. 87.5% of parenchymal attitudes were observed to be bilateral. none of them encountered pneumothorax [17]. In severe acute respiratory failure syndrome, sudden alveolar pressure increase may cause interstitial emphysema and air leak, leading to the development of mediastinal emphysema [18]. In this study, we present a 24-year-old young patient with Covid-19 pneumonia and pneumothorax. We discussed the patient and his radiological findings in the light of the literature. Pneumothorax may develop in Covid-19 pneumonia due to alveolar damage. This can cause increased mortality and morbidity. For this reason, pneumothorax should be kept in mind in the treatment and follow-up of Covid-19 infection.

Conflict of Interest

All authors declare that they have no conflict of interest.

Financial Support

No financial support was recieved for study.

Author Contributions

All authors contributed equally.

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