A 19-year-old woman arrived at a Turkish emergency department with sudden, stabbing chest pain that had started while she was shouting for her team at a soccer match. Her electrocardiogram was normal. Her troponin and lactate were within the reference range. Her chest X-ray showed nothing. Two hours later, as staff prepared her discharge paperwork, a doctor examining her neck felt a fine crackling under the skin, like crushed bubble wrap.
A repeat X-ray and a CT scan found what the first round of tests had missed. Air had escaped from her lungs and collected in the mediastinum, the central compartment of the chest that houses the heart, the esophagus, and the great vessels. She had spontaneous pneumomediastinum, and the trigger was nothing more exotic than cheering.
The case appears in the Turkish Journal of Emergency Medicine, written by Abdullah Önür of Gaziantep City Hospital and Emre Sancı of Bakırçay University. The patient was admitted for 72 hours, had no complications, and was discharged home.
The Chest X-Ray That Looked Normal Two Hours Too Early
On arrival, her vital signs were reassuring: pulse 99, oxygen saturation 98%, blood pressure 110/78. She had no palpable crepitus, no tenderness, and both lungs moved normally with no abnormal breath sounds. She was given a painkiller, her pain resolved, and she was cleared to leave.
The re-examination before discharge is what changed the outcome. Önür and Sancı single out the delayed appearance of neck crepitus as the most instructive feature of the case, because it means an air leak can be too small to detect when a patient walks through the door. Their conclusion is blunt. Early discharge based on a normal first X-ray, without a repeat examination or explicit instructions on when to return, risks missing the diagnosis entirely. The authors also asked their patient to return for a checkup a month later. She never did.
How Shouting Can Rupture the Lungs' Smallest Air Sacs
The mechanism is a chain reaction known as the Macklin effect. Forceful vocalization sharply raises pressure inside the alveoli, the microscopic sacs where oxygen crosses into the blood. When the pressure gradient between the alveoli and the surrounding lung tissue grows steep enough, a few of those sacs give way. Escaped air then migrates inward along the sheaths that wrap the airways and blood vessels, pooling in the mediastinum and often tracking upward into the soft tissue of the neck.
The condition is uncommon. The Turkish team cites an incidence of roughly 1 case per 7,000 to 12,000 hospital admissions and notes that it usually occurs in young men. Presentations vary enough to send patients down several wrong paths at once, since the pain can radiate to the shoulders and back in a pattern that looks like a coronary problem, which is one reason an electrocardiogram is ordered early. Asthma flares, vomiting, coughing, weightlifting, childbirth, diving, and inhaled drug use account for most reported triggers. Vocal exertion sits far down that list, and a narrative review of the condition describes retrosternal chest pain, breathlessness, and neck crepitus as symptoms clinicians should watch for.
Baritones, Cheerleaders and Soccer Fans Keep Turning Up in the Same Emergency Rooms
Isolated as the phenomenon is, it is not unprecedented. Physicians at Juntendo University in Tokyo documented a 20-year-old cheerleading student who developed hoarseness, neck swelling, throat pain and chest pain after six hours of yelling at club training. Emergency physicians affiliated with Emory University School of Medicine reported an 18-year-old marching band member whose pneumomediastinum they attributed to barotrauma from playing the baritone. A Cureus report described a 17-year-old girl who developed the same condition after an episode of shouting.
Sports crowds show up repeatedly. A previously healthy 21-year-old soldier developed pneumomediastinum after yelling through a soccer match, a case published in Military Medicine, and Danish clinicians reported a comparable case tied to cheering during the UEFA European Championship. Those two reports, Önür and Sancı note, were the only previously published cases of pneumomediastinum caused specifically by cheering that they could locate.
Why This Almost Always Resolves, and When It Does Not
The prognosis is generally good. Uncomplicated cases are managed with rest, pain relief, oxygen if needed, and avoidance of anything that spikes pressure in the chest or gut. Recurrence rates are low, and mortality is also low when no complications develop.
Chest radiography and CT of the thorax do most of the diagnostic work, with the CT used to pinpoint the underlying cause and identify complications. Clinicians take the finding seriously anyway, because the same air can signal a torn esophagus or airway, and because pneumomediastinum itself can occasionally progress to pneumothorax, mediastinitis or, rarely, compression of the heart. Those outcomes are the exception, not the expectation. The Turkish authors advise recovering patients to avoid strenuous activity and anything involving a hard Valsalva maneuver, and to return to the emergency department if symptoms recur.
None of this means that singing or cheering is dangerous for the general public. It means that sudden chest or neck pain following a bout of hard vocal exertion is worth describing accurately to a clinician rather than shrugging it off.
Key Questions Answered
What is pneumomediastinum?
It is the presence of air in the mediastinum, the central chest compartment containing the heart, esophagus, and major vessels. In spontaneous cases, the air comes from ruptured lung air sacs rather than from an injury.
Can shouting really cause it?
Case reports document it after cheering, shouting, cheerleading vocal drills, and playing a brass instrument. It remains rare, and the reported patients typically had no underlying lung disease.
What symptoms should prompt a check?
Sudden chest pain, neck or throat pain, difficulty swallowing, breathlessness, voice change, or a bubbling or crackling sensation under the skin of the neck or collarbone.
Why did the first X-ray miss it?
The air leak was likely still too small to show. The authors say that the crepitus in this patient appeared only on re-examination two hours after her arrival.
How is it treated?
Most patients need only observation, pain control, and rest. Imaging is used to rule out esophageal or airway injury, which are the serious mimics.
Who is most at risk?
Reported cases cluster in young men, though the Turkish patient was a young woman with no medical history at all.
