[Spontaneous pneumomediastinum in an adolescent: an underestimated cause of chest pain]

Pneumomediastinum after retching

A 25-year-old woman with hirsutism presented to the Emergency Department of the medicine faculty in Gaziantep University with a 4-h History of dyspnoea, dysphagia, coughing, continuous and progressive chest pain radiating to the back and palpation of her neck. The physical examination was significant for diffuse neck and chest subcutaneous emphysema. The x-ray study and CT scan of the chest revealed pneumomediastinum. The patient reported that 6 h before presentation she took spironolactone due to hirsutism and she retched. Retching caused the symptoms. The patient was followed conservatively and fully recovered over the next 7 days. Spontaneous pneumomediastinum developed in this patient with no underlying lung disease, presumably from air leakage secondary to the excessive elevation of intrathoracic pressure due to retching. Pneumomediastinum is an uncommon disease arising most frequently and remains largely underdiagnosed clinically, especially in young, healthy patients.

[Pneumomediastinum, giant subcutaneous emphysema and pneumoperitoneum revealed by jaw pain. Uncommon physiopathology of pneumomediastinum]

INTRODUCTION

Spontaneous pneumomediastinum is a rare entity, predominantly described in young man. The association of acute dyspnea, chest pains and subcutaneous emphysema is usually reported.

CASE REPORT

We report the observation of a pneumomediastinum, fortuitously discovered in front of an isolated giant subcutaneous emphysema in a 59 year old man. The recent clinical history was only marked by the presence of intense and acute dental pains. Associated with a pneumoperitoneum, a retro-pneumoperitoneum, this clinical presentation is uncommon and differs from previous published case reports. Despite a complete evaluation of classical risk factors, its origin remains uncertain. However, the presence of huge dental injuries led to consider such local origin, facilitating air diffusion.

CONCLUSION

This case report allows to reconsider spontaneous pneumomediastinum entity and to propose additional physiopathological mechanisms. This original description underlines the interest to systematically perform dental examination in the presence of unexplained pneumomediastinum.

Spontaneous pneumomediastinum: experience in 18 adult patients

Spontaneous pneumomediastinum (SPM) is defined as the presence of air in the mediastinum, developing in the absence of traumatic, iatrogenic, or preceding pulmonary pathologies (emphysema, chronic bronchitis, and lung cancer). The aim of this study was to review our experiences with SPM, underlining its symptomatology, diagnosis, treatment, and followup, and defining a reasonable course of assessment and management. A retrospective case series was conducted to identify adult patients with SPM who were diagnosed and treated in our institution between 1998 and 2005. Eighteen patients (10 males) were identified (average age = 25 +/- 4.8 years). Acute onset of chest pain was the predominant symptom at presentation. All patients developed clinically evident subcutaneous emphysema and underwent chest computerized tomography. Fiber bronchoscopy and echocardiogram were used selectively (8 patients). The average hospital stay was 6 (+/-1.4) days. Sixteen patients were conservatively treated, and only two patients were treated with thoracic drainage due to a related pneumothorax. The disease followed a benign evolution in all patients and, as of today, no relapse has been reported. SPM is an uncommon pathology with a usually benign course. The authors discuss SPM. A diagnostic algorithmic approach is necessary to rule out severe secondary entities and consequences that need urgent treatment.

Spontaneous pneumomediastinum: a rare benign entity

OBJECTIVE

Spontaneous pneumomediastinum usually occurs in young people without an apparent precipitating factor or disease. Thoracic surgeons are involved in the diagnosis and management of this entity because of the potentially life-threatening conditions that either must be treated as an emergency or excluded, such as esophageal perforation or necrotizing mediastinitis. We present our modest experience in treating spontaneous pneumomediastinum.

MATERIALS

Between 1988 and 1998 we treated 22 cases of spontaneous pneumomediastinum in 18 male patients and 4 female patients, ranging in age between 12 and 32 years. All traumatic cases were excluded. Retrosternal chest pain was the main symptom the patients presented. In only 11 cases was subcutaneous emphysema present. Chest radiography was diagnostic in all our cases. Computed tomographic scan, when performed, confirmed the diagnosis. An esophagogram was essential to exclude an esophageal rupture. Last, a cardiologic examination especially focusing on pericarditis excluded cardiac disease.

RESULTS

Conservative treatment consisted of bed rest, oxygen therapy, and analgesics, which led to rapid resolution of the spontaneous pneumomediastinum. The mean hospital stay ranged between 3 and 10 days. In a follow-up of 3 to 12 years only 1 recurrence was observed.

CONCLUSION

Spontaneous pneumomediastinum is usually an undiagnosed benign entity that responds very well to conservative treatment. It should be considered in the differential diagnosis of chest pain, especially in healthy adolescents and young adults.

[Spontaneous cervical emphysema and pneumomediastinum with voice disorders]

Spontaneous cervical emphysema and pneumomediastinum, occurring in the absence of previous disorders or provocating factors, is very rare. The predominant symptoms are retroesternal pain, dyspnea, dysphagia and neck pain. The diagnosis is established radiologically. The evolution is generally good and conservative therapy leads to recovery in most patients. We present an unusual case of pneumomediastinum, cervical and retropharyngeal emphysema that spread to cavum; the suspected symptom was voice alteration as reported by the parents.