You are presented with a paragraph from a COVID-19 literature. Classify the topics of this piece of text by choosing from the following categories:

- Epidemic Forecasting: The content relates to predictions about the spread of COVID-19.
- Treatment: The paragraph discusses therapeutic methods or medication for COVID-19.
- Prevention: The content covers measures to prevent the spread of COVID-19.
- Mechanism: The paragraph explains the biological mechanisms of the virus.
- Case Report: The content is a report of a COVID-19 case.
- Transmission: The paragraph discusses how COVID-19 is transmitted.
- Diagnosis: The content is about diagnosing COVID-19 in individuals.

Your classification should be provided as an element within a JSON array. The array should be formatted with topics enclosed in double quotes and separated by commas, following the JSON format, for example: ["Topic1", "Topic2", ...]. Include all applicable topics within the array. Your output should be a valid JSON array, and no additional text should be included in your response.

Article:

We report a case of spontaneous pneumomediastinum, pneumothorax, emphysema subcutaneous and pneumorrhachis, occurring in an adolescent resulting positive to SARS-CoV-2 nasopharyngeal swab. At the admission in Emergency Department, the child presented with left cervical and sternal pain, without respiratory symptoms. Radiological studies showed sizeable pneumomediastinum, bilateral apical pneumothorax, massive emphysema subcutaneous and pneumorrhachis. Patients' clinical conditions stood stable during the monitoring and he only needed conservative management. To our knowledge, this is the first description of spontaneous pneumomediastinum, pneumothorax, emphysema subcutaneous and pneumorrhachis, in a COVID-19 adolescent without concomitant pneumonia.
["Case Report"]