Continuous diaphragm sign

Case contributed by Mohammed A. Mahdi

Presentation

cough for one week duration

Patient Data

Age: 5 years
Gender: Male
x-ray

Spontaneous pneumomediastinum with typical continuous diaphragm sign is present. 

Spontaneous subcutaneous emphysema also noted. 

Case Discussion

Repeated cough can result in spontaneous pneumomediastinum and subcutaneous emphysema. Macklin effect could represent the pathophysiology behind the case findings.

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