Síndrome de hamman en neumonía por SARS-COV-2 / Hamman's syndrome in SARS-CoV-2 pneumonia

Resumen El síndrome de Hamman, o neumomediastino es pontáneo, es la presencia de aire en mediastino en pacientes sin antecedentes de enfermedad pulmonar previa, trauma torácico o iatrogenia. Se ha descrito como una complicación rara en pacientes con neumo nía por COVID-19. Se postula que un aumento en la presión de la vía aérea asociado a daño alveolar difuso generado por el virus, producen una fuga de aire hacia el mediastino. El dolor torácico y disnea, asociado a enfisema subcutáneo, deben hacer sospechar al médico tratante. Presentamos un paciente de 79 años que du rante su internación por neumonía secundaria al virus SARS-CoV-2 evolucionó súbitamente con disnea, dolor torácico, accesos de tos y broncoespasmo con hallaz go de neumomediastino espontáneo en la tomografía de tórax. Evolucionó favorablemente con tratamiento broncodilatador y oxigenoterapia. El síndrome de Ham man es una causa poco frecuente de progresión de insuficiencia respiratoria en pacientes con neumonía por COVID-19. Su identificación es crucial para imple mentar el tratamiento adecuado.

Abstract Hamman's syndrome, or spontaneous pneumome diastinum, is the presence of air in the mediastinum without a history of previous pulmonary pathology, chest trauma or iatrogenesis. It has been described as a rare complication in patients with COVID-19 pneu monia. It is postulated that an increase in airway pres sure associated with diffuse alveolar damage caused by the virus produces an air leak into the mediastinum. Chest pain and dyspnea associated with subcutaneous emphysema should make the treating physician suspi cious. We introduce a 79-year-old patient who, during hospitalization for pneumonia secondary to COVID-19, suddenly developed dyspnea, chest pain, coughing spells and bronchospasm with the discovery of spontaneous pneumomediastinum on chest tomography. He evolved favorably with bronchodilator treatment and temporary oxygen therapy. Hamman's syndrome is a rare cause of respiratory failure progression in patients with COVID-19 pneumonia. Its recognition is crucial to implement the appropriate treatment.

SARS-CoV-2 pneumomediastinum. A proposed pneumomediastinum classification

Pneumomediastinum is a rare complication of viral pneumonias. However, as a result of the COVID-19 pandemic, the reports of SARS-CoV-2 related pneumomediastinum have increased. This type of pneumomediastinum is known as "spontaneous" pneumomediastinum. Spontaneous pneumomediastinum is defined as the presence of air in the mediastinal cavity with no apparent cause, but paradoxically, the group termed "spontaneous" is the one with the greatest trigger. Therefore, we believe that the current classification does not coincide with the definition. We present five SARS-CoV-2 pneumomediastinum cases and propose a pneumomediastinum classification. These are the first published reports in our country. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2252).

El neumomediastino es una complicación poco frecuente de las neumonías virales; sin embargo, a raíz de la pandemia de la COVID-19, los informes de casos de neumomediastino por SARS-CoV-2 se han incrementado. A este tipo de neumomediastino se le denomina espontáneo. Se define como neumomediastino espontáneo a la presencia de aire en la cavidad mediastínica sin ninguna causa aparente, pero paradójicamente, el grupo denominado espontáneo es el que tiene mayor causa desencadenante, por lo tanto, creemos que la clasificación actual no es coherente con el significado. Presentamos cinco casos de neumomediastino por SARS-CoV-2 y proponemos una clasificación para el neumomediastino. Estos son los primeros informes publicados en nuestro país. (Acta Med Colomb 2022; 47. DOI:https://doi.org/10.36104/amc.2022.2252).

Neumomediastino secundario a efecto Macklin: a propósito de un caso / Pneumomediastinum secondary to Macklin effect: a case report

RESUMEN Introducción: el neumomediastino es la presencia de aire en el espacio mediastinal procedente de bronquios, alvéolos o de una ruptura esofágica, que viaja a través de las vainas vasculares y los planos tisulares hacia el espacio mediastinal; puede ser categorizado como espontáneo, traumático o secundario. Objetivo: describir un paciente con neumomediastino secundario al efecto Macklin. Caso clínico: se trata de un paciente masculino de 32 años sin antecedentes médicos, que acude a urgencias refiriendo tos seca, dolor de garganta, dolor al ingerir alimentos, malestar general, dolores articulares a predominio de rodillas y espalda baja y fiebre de 39°C acompañada de escalofríos. El día posterior a su ingreso, tras un acceso de tos, presenta de forma súbita aumento de volumen del cuello y porción superior del tórax, acompañado de dolor en dicha zona, dificultad para respirar y hablar. Al examen en este momento se constata aumento de volumen y crepitación en cuello, fosa supraclavicular, y porción anterosuperior y posterosuperior del tórax (enfisema subcutáneo) así como estertores roncos y sibilantes diseminados en ambos campos pulmonares. Se realiza radiografía de tórax de urgencia que muestra signos sugestivos de enfisema subcutáneo y neumomediastino. Se solicita valoración por servicio de cirugía General y otorrino, los cuales sugieren tratamiento conservador. Conlusiones: el neumomediastino es una enfermedad poco frecuente y benigna, sus características clínicas son dolor torácico y enfisema subcutáneo luego de un acceso de tos y evoluciona de forma satisfactoria entre dos y 15 días.

ABSTRACT Introduction: pneumomediastinum is the presence of air in the mediastinal space coming from bronchi, alveoli or esophageal rupture, which travels through vascular sheaths and tissue planes to the mediastinal space; it can be categorized as spontaneous, traumatic or secondary. Objective: to describe a patient with pneumomediastinum secondary to the Macklin effect. Case report: a 32-year-old male patient with no medical history came to the emergency room with a dry cough, sore throat, pain when eating and general malaise, joint pain predominantly in the knees and lower back, and fever of 39°C with chills. The day after his admission, after an attack of coughing, he suddenly presented an increase in volume of the neck and upper chest, accompanied by pain in this area, difficulty in breathing and speaking. On examination at this time, there was an increase in volume and crepitus in the neck, supraclavicular fossa, and anterosuperior and posterosuperior portion of the thorax (subcutaneous emphysema) as well as hoarse and wheezing rales disseminated in both lung fields. An emergency chest X-ray was performed showing signs suggestive of subcutaneous emphysema and pneumomediastinum. An evaluation by the General Surgery and Otorhinolaryngology Departments was requested, which suggested conservative treatment. Conclusions: pneumomediastinum is a rare and benign disease, its clinical characteristics are chest pain and subcutaneous emphysema after a coughing fit and it evolves satisfactorily between 2 and 15 days.

Spontaneous Pneumomediastinum in a Patient with COVID-19 / Neumomediastino espontáneo en un paciente con COVID-19

ABSTRACT Patients infected with SARS-CoV2 show various manifestations consistent with the multiorgan impact of this virus in the system of the human being. However, pulmonary conditions are the most predominant: from slight ground glass infiltrates to severe involvement of pulmonary parenchyma. Pneumomediastinum is a rare expression that only occurs in 1% of patients. We present the case of a critically ill male patient with COVID-19 who develops pneumomediastinum without pneumothorax.

RESUMEN Los pacientes infectados por SARS-CoV2 presentan manifestaciones variadas consecuentes con el impacto multiorgánico de este virus en la economía del ser humano. Sin embargo, las afecciones pulmonares son las predominantes, dado que abarcan desde sutiles infiltrados en "vidrio esmerilado" hasta un gran compromiso del parénquima pulmonar. El neumomediastino es una expresión rara que se presenta tan solo en un 1% de los pacientes. Presentamos el caso de un paciente varón con COVID-19 crítico que desarrolla neumomediastino sin neumotórax.

Neumomediastino espontáneo en un paciente con COVID-19 / Spontaneous Pneumomediastinum in a Patient with COVID-19

Los pacientes infectados por SARS-CoV2 presentan manifestaciones variadas consecuentes con el impacto multiorgánico de este virus en la economía del ser humano. Sin embargo, las afecciones pulmonares son las predominantes, dado que abarcan desde sutiles infiltrados en "vidrio esmerilado" hasta un gran compromiso del parén quima pulmonar. El neumomediastino es una expresión rara que se presenta tan solo en un 1% de los pacientes. Presentamos el caso de un paciente varón con COVID-19 crítico que desarrolla neumomediastino sin neumotórax.

Patients infected with SARS-CoV2 show various manifestations consistent with the multiorgan impact of this virus in the system of the human being. However, pulmonary conditions are the most predominant: from slight ground glass infiltrates to severe in volvement of pulmonary parenchyma. Pneumomediastinum is a rare expression that only occurs in 1% of patients. We present the case of a critically ill male patient with COVID-19 who develops pneumomediastinum without pneumothorax.

Neumomediastino espontáneo en paciente con COVID-19 / Sponteneous pneumomediastinum in patient with COVID-19

Introducción: El neumomediastino espontáneo o síndrome Hamman es una complicación poco frecuente y rara. Se define como la presencia de aire o gas dentro del mediastino sin una causa identificada. Objetivo: Presentar un caso clínico con una complicación poco frecuente, neumomediastino espontáneo, en un paciente con enfermedad por COVID-2019. Caso clínico: Paciente de 86 años con cuadro clínico manifestado por fiebre de 38o C y síntomas respiratorios (tos con secreción blanquecina, disnea de moderados esfuerzos). Se realiza prueba de reacción en cadena de polimerasa para enfermedad por coronavirus 2019, esta fue positiva. Al cuarto día de su hospitalización concurre con empeoramiento clínico dentro que lo destaca tos y disnea progresiva acompañado con saturación de oxigeno menor a 91 por ciento. Se realizaron estudios imagenológicos de alta resolución (angiotomografía computarizada de tórax) en la cual se evidencia la presencia de neumomediastino. Desarrollo: La pandemia por enfermedad por coronavirus 2019 ha dado lugar a una emergencia de salud pública a nivel mundial, en la que es importante que el personal de la salud esté familiarizados con los síntomas, los resultados de imágenes y con las complicaciones de esta enfermedad, como el neumomediastino encontrado en este caso. Conclusión . El neumomediastino espontáneo es una complicación poco frecuente que se presenta en la fase inflamatoria de esta enfermedad(AU)

Introduction: Spontaneous pneumomediastinum or Hamman syndrome is a rare and infrequent complication. It is defined as the presence of air or gas within the mediastinum without an identified cause. Objective: To report a clinical case of spontaneous pneumomediastinum in a patient with COVID-2019, a disease with a rare complication. Clinical case report: We report the case of an 86-year-old patient with a clinical condicion of fever of 38o C and respiratory symptoms (cough with whitish secretions, dyspnea on moderate exertion). He underwent a polymerase chain reaction test for coronavirus disease 2019, which resulted positive. On the fourth day of his hospitalization, he his clinical condition worsened, including cough and progressive dyspnea accompanied by oxygen saturation less than 91 percent. The presence of pneumomediastinum was revealed by high-resolution imaging studies (computed tomography angiography of the chest). Discussion: The 2019 coronavirus disease pandemic has given rise to a global public health emergency, which requires health personnel to be familiar with symptoms, imaging results, and complications of this disease, such as pneumomediastinum found in this case. Conclution: Spontaneous pneumomediastinum is a rare complication that occurs in the inflammatory phase of this disease(AU)

Neumomediastino espontáneo en un paciente con COVID-19. Reporte de caso / Spontaneous Pneumomediastinum in a Patient With COVID-19. Case Report

Resumen Dentro de las distintas complicaciones que se han descrito en pacientes con neumonía viral por SARS-CoV-2 tiene especial interés clínico el neumomediastino espontáneo (NE), por tratarse de una condición rara reportada en aproximadamente 1% de los pacientes con COVID-19. Se define por la presencia de aire en el mediastino en pacientes sanos o en ausencia de algún origen iatrogénico o traumático. Su presentación clínica suele ser insidiosa y puede acompañarse de otras complicaciones respiratorias. Presentamos el caso de un paciente con COVID-19 que durante su hospitalización desarrolló NE asociado a enfisema en regiones extratorácicas. No hubo presencia de enfisema subcutáneo ni neumotórax.

Abstract Among the different complications that have been described in patients with viral pneumonia due to SARS-CoV-2, spontaneous pneumomediastinum (SP) is of special clinical interest, as it is a rare condition reported in approximately 1% of patients with COVID-19. It is defined by the presence of air in the mediastinum in healthy patients or in the absence of any iatrogenic or traumatic origin. Its clinical presentation is usually insidious and may be accompanied by other respiratory complications. We present the case of a patient with COVID-19 who developed SP associated with emphysema in extrathoracic regions during hospitalization. There was no presence of subcutaneous emphysema or pneumothorax.

Neumomediastino espontáneo. Reporte de un caso

RESUMEN El neumomediastino espontáneo se caracteriza por la presencia de aire en el mediastino. Es una enfermedad generalmente benigna, que evoluciona de forma satisfactoria entre 2 y 15 días, no asociada a causa directa conocida. Es infrecuente en la tercera edad. Se presenta principalmente con dolor torácico, disnea y enfisema subcutáneo. El diagnóstico se realiza sobre la base del cuadro clínico, la radiografía de tórax y la tomografía axial computarizada de tórax, siendo esta última importante, además, para establecer el diagnóstico diferencial con el síndrome de Boerhaave de manera oportuna. Se presentó el caso de un paciente masculino de 67 años de edad, fumador con antecedente de enfermedad pulmonar obstructiva crónica, que acude al cuerpo de guardia por dolor torácico, disnea y enfisema subcutáneo después de un episodio de tos intensa. Se le realizaron radiografías de tórax posteroanterior y lateral, en las que se observan la presencia de aire en el mediastino, se descartan otras enfermedades agudas, y se corrobora el diagnóstico de neumomediastino mediante tomografía axial computarizada de tórax. Recibió tratamiento con oxígeno, broncodilatadores, esteroides y antibióticoterapia, obteniéndose una mejoría evidente. La literatura reporta que no es habitual la presencia de este cuadro en pacientes de la tercera edad, y que debe sospecharse en aquellos que presenten una exacerbación de la enfermedad pulmonar obstructiva crónica, fundamentalmente después de un episodio de tos.

ABSTRACT The spontaneous pneumomediastinum is characterized by the air presence in the mediastinum. It is a generally benign disease which evolves in a satisfactory way between 2 and 15 days, that is not associated to any directly known cause. It is infrequent in the old age. It mainly presents with chest pain, dyspnea and subcutaneous emphysema. Diagnosis realizes on the base of clinical characteristics, thorax radiography and thorax axial computed tomography, being the last one also important to establish the differential diagnosis with Boerhaave syndrome in an opportune way. The case presented is the case of a male patient aged 67 years, who smokes and has antecedents of chronic obstructive pulmonary disease. He assisted to the consultation due to thoracic pain, dyspnea and subcutaneous emphysema after an episode of intense cough. Posteroanterior and lateral thorax radiography were done, finding air presence in the mediastinum; other acute diseases were discarded and the diagnosis of pneumomediastinum was corroborated through thorax computed tomography scan. He was treated with oxygen, bronchodilators, steroids and antibiotics therapy, obtaining an evident improvement. The literature reports that the presence of these characteristics in old-aged patients is not common and that it must be suspected in those presenting an aggravation of the chronic obstructive pulmonary disease, mainly after a cough episode.

Neumomediastino espontáneo en pacientes COVID-19. Serie de casos / Spontaneous pneumomediastinum in COVID-19 patients. Case series

Resumen El neumomediastino espontáneo es la presencia de aire libre en el mediastino sin el antecedente de alguna causa como trauma de tórax. Es una condición benigna autolimitada que se trata en forma conservadora. El diagnóstico clínico se basa en dos síntomas: dolor torácico y disnea; y en un signo en particular: enfisema subcutáneo. Ha sido reportado en pacientes con influenza A (H1N1) y síndrome respiratorio agudo grave; sin embargo, ha sido raramente observado en pacientes con COVID-19. En este trabajo describimos seis pacientes del sexo masculino con COVID-19, con edades entre 27 y 82 años, que presentaron neumomediastino espontáneo y enfisema subcutáneo; ambos se reabsorbieron totalmente con manejo conservador.

Abstract Spontaneous pneumomediastinum is defined as the presence of free air within the mediastinum without an apparent cause such as chest trauma. It is a benign, self-limiting condition that is conservatively treated. Clinical diagnosis is based on two symptoms: chest pain and dyspnea; and on a particular sign: subcutaneous emphysema. It has been reported in patients with influenza A (H1N1) and severe acute respiratory syndrome; however, it has been rarely observed in COVID-19 patients. In this work, we describe six male patients with COVID-19, aged between 27 and 82 years, who presented with spontaneous pneumomediastinum and subcutaneous emphysema; both conditions were completely resorbed with conservative management.

Hamman’s Syndrome: A Rare Benign Syndrome

@#Hamman’s syndrome by definition is spontaneous pneumomediastinum with the exclusion of thoracic trauma or iatrogenic cause. It is rare and is more common in adolescence male. Amongst the risk factors are underlying lung condition such as asthma and interstitial lung disease, drug inhalation and parturient woman. Patient usually presents with sudden onset of shortness of breath and chest pain with subcutaneous emphysema on examination. The diagnosis is confirmed with chest radiograph. The prognosis of Hamman’s syndrome is excellent. Most cases are self-limiting and resolve spontaneously. However, Hamman’s syndrome is a poorly recognised disease due to its rarity. Therefore, the patient may be subjected to misdiagnosis and treatment. This is a case report of Hamman’s syndrome misdiagnosed and treated as pneumothorax. The objective of this case report is to highlight the importance of differentiating this benign syndrome with life threatening differentials which may have similar clinical presentation. Thus, avoiding unnecessary costly investigation, treatment and invasive procedures.

Spontaneous pneumomediastinum complicating interstitial lung disease, associated with clinically amyopathic dermatomyositis and positive anti-MDA5 antibodies / Neumomediastino espontáneo como complicación de enfermedad pulmonar intersticial, asociada con dermatomiositis clínicamente amiopática y anticuerpos anti-MDA5 positivos

Abstract Clinically amyopathic dermatomyositis comprises a special group of patients within the spectrum of dermatomyositis characterized by the presence of typical skin lesions, minimal or absent muscle involvement, and increased risk of interstitial lung disease. The antibodies directed against the protein encoded by melanoma differentiation-associated gene 5 (MDA5) are present in a significant proportion of patients with clinically amyopathic dermatomyositis, who develop rapidly progressive interstitial lung disease, with high mortality and frequently complicated by the onset of spontaneous pneumomediastinum. A case is presented of an African patient with anti-MDA5 positive clinically amyopathic dermatomyositis and interstitial lung disease with tomography pattern of organizing pneumonia who developed spontaneous pneumomediastinum during its clinical course.

Resumen La dermatomiositis clínicamente amiopática comprende un grupo especial de pacientes dentro del espectro de la dermatomiositis, caracterizados por la presencia de lesiones cutáneas típicas, compromiso muscular mínimo o ausente y riesgo aumentado de enfermedad pulmonar intersticial. Los anticuerpos dirigidos contra la proteína codificada por el gen asociado con la diferenciación del melanoma 5 (MDA5), están presentes en una proporción importante de pacientes con dermatomiositis clínicamente amiopática, los cuales desarrollan enfermedad pulmonar intersticial rápidamente progresiva, con elevada mortalidad y que se complica frecuentemente con la aparición de neumomediastino espontáneo. Presentamos el caso de una paciente de origen africano con dermatomiositis clínicamente amiopática anti-MDA5 positiva y enfermedad pulmonar intersticial con patrón tomográfico de neumonía organizada, que desarrolló neumomediastino espontáneo durante su evolución.

Neumomediastino espontáneo recidivante / Recurrent Spontaneous Pneumomediastinum

El neumomediastino espontáneo se caracteriza por la presencia de aire en el mediastino. Es una enfermedad generalmente benigna y autolimitada, no asociada a causa directa conocida. Es de infrecuente ocurrencia. Se presenta principalmente con dolor torácico, disnea y enfisema subcutáneo. El diagnóstico se realiza sobre la base del cuadro clínico y radiografía o tomografía axial computarizada de tórax. Se presenta el caso de un paciente masculino de 17 años de edad, atleta de alto rendimiento, que comienza de forma súbita con dolor torácico, disnea y enfisema subcutáneo. Se le realizó radiografía de tórax en la que se observa la presencia de aire en el mediastino, y se corrobora el diagnóstico de neumomediastino mediante tomografía axial computarizada de tórax. Recibió tratamiento conservador con mejoría evidente. Aunque la literatura reporta que no es habitual la recurrencia, en el paciente que se presenta hubo recidiva del neumomediastino a los tres meses del primer evento. Se presenta este caso por lo infrecuente de esta enfermedad y su recurrencia(AU)

Spontaneous pneumomediastinum is characterized by the presence of air in the mediastinum. It is a generally benign and self-limiting disease, not associated with known direct cause. It is of infrequent occurrence. It presents mainly with chest pain, dyspnea and subcutaneous emphysema. The diagnosis is made based on the clinical picture and chest X-ray or computed tomography. It is presented a male patient of 17 years old, a high performance athlete, who started suddenly with chest pain, dyspnea and subcutaneous emphysema. A chest x-ray was performed and the presence of air in the mediastinum was observed, confirming the diagnosis of pneumomediastinum by means of computerized tomography of the thorax. He received conservative treatment with obvious improvement. Although the literature reports that recurrence is not common, there was a recurrence of the pneumomediastinum three months after the first event. This case is presented because of the infrequence of this condition and its recurrence(AU)

Neumomediastino espontáneo en paciente consumidor de cocaína inhalada / Spontaneous pneumomediastinum in a consumer of inhaled cocaine

El neumomediastino espontáneo es una patología poco frecuente, de curso predominantemente benigno. Se produce en personas con factores predisponentes como asma y enfermedad pulmonar obstructiva crónica y en presencia de factores desencadenantes como el consumo de cocaína inhalada (crack). La radiografía y la tomografía axial computarizada de tórax son herramientas de gran utilidad para orientar el diagnóstico. Se presenta el caso de un paciente masculino de 20 años de edad con antecedente de consumo de cocaína quien consulta por dolor torácico y disnea. La baja incidencia de esta patología hace que su diagnóstico sea un reto para el médico de emergencia por lo que es necesario un alto nivel de sospecha y conocimiento.

The spontaneous pneumomediastinum is a rare pathology that has a benign prognosis. It happens in patients with predisposing factors like asthma and COPD and in the presence of trigger factors like inhaled cocaine (crack) consumption. Chest radiography and CT scan are useful tools to orientate the diagnosis. We present the case of a 20 year-old male patient with dyspnea and chest pain with cocaine consumption history. The low incidence of the pathology makes the diagnosis a real challenge for the emergency room physician and its necessary a high level of suspicion and knowledge to do it.

Síndrome de Hamman / Hamman syndrome

Resumen Se conoce como Síndrome de Hamman al neumomediastino espontáneo. Condición considerada benigna, autolimitada y poco reportada en la literatura nacional e internacional. Es probable que exista un subregistro o no se dé a conocer lo suficiente. Debe tenerse en cuenta en todo paciente joven que ingrese a los servicios de urgencias por dolor torácico, disnea y enfisema subcutáneo. El diagnóstico se realiza por sospecha clínica y se confirma con los rayos x de tórax. El tratamiento es netamente conservador. Presentamos un caso ilustrativo de esta condición que se presentó en un joven después de un episodio paroxístico de tos ocasionado por contacto con gasolina. Su condición previa era completamente normal. (Acta Med Colomb 2016; 41: 206-210).

Abstract Spontaneous pneumomediastinum is known as Hamman's syndrome. This condition is considered benign, self-limited and is little reported in the national and international literature. It is probably underreported or is not enough publicized. It must be considered in every young patient admitted to the emergency department with chest pain, dyspnea and subcutaneous emphysema. The diagnosis is made by clinical suspicion and is confirmed by chest X-rays. The treatment is clearly conservative. An illustrative case of this condition that occurred in a young man after a paroxysmal coughing episode caused by contact with gasoline is presented. Its previous condition was completely normal. (Acta Med Colomb 2016; 41: 206-210).

An unusual cause of chest pain in army trainee -spontaneous pneumomediastinum

This is a case report of spontaneous pneumomediastinum that occurred in a 19-year-old army trainee during his 2.4km run. Spontaneous pneumomediastinum is a rare disorder. It is usually precipitated by activities related to Valsalva manoeuvres such as strenuous physical activities, retching and vomiting. Treatment is expectant and the disorder usually resolves spontaneously within a few days. However, one must be aware of the disorder so that additional advice such as avoiding activities that involve Valsalva manoeuvres can be given.

Clinical Manifestations of Spontaneous Pneumomediastinum

BACKGROUND: Spontaneous pneumomediastinum (SPM) is an uncommon disorder with only a few reported clinical studies. The goals of this study were to investigate the clinical manifestations and the natural course of SPM, as well as examine the current available treatment options for SPM. METHODS: We retrospectively reviewed 91 patients diagnosed with SPM between January 2008 and June 2015. RESULTS: The mean age of the patients was 22.7±13.2 years, and 67 (73.6%) were male. Chest pain (58, 37.2%) was the predominant symptom. The most frequent precipitating factor before developing SPM was a cough (15.4%), but the majority of patients (51, 56.0%) had no precipitating factors. Chest X-ray was diagnostic in 44 patients (48.4%), and chest computed tomography (CT) showed mediastinal air in all cases. Esophagography (10, 11.0%), esophagoduodenoscopy (1, 1.1%), and bronchoscopy (5, 5.5%) were performed selectively due to clinical suspicion, but no abnormal findings that implicated organ injury were documented. Twelve patients (13.2%) were discharged after a visit to the emergency room, and the others were admitted and received conservative treatment. The mean length of hospital stay was 3.0±1.6 days. There were no complications related to SPM except for recurrence in 2 patients (2.2%). CONCLUSION: SPM responds well to conservative treatment and follows a benign natural course. Hospitalization and aggressive treatment can be performed in selective cases.

Spontaneous Pneumomediastinum: A Rare Disease Associated with Chest Pain in Adolescents

PURPOSE: Spontaneous pneumomediastinum (SPM) is a rare entity, with only a few cases reported, especially in adolescents. We aimed to analyze the clinical characteristics of SPM in adolescents and the diagnostic implications of computed tomography (CT) and esophagography therein. MATERIALS AND METHODS: This retrospective descriptive study was conducted as a review of medical records of 416 adolescents (10-18 years of age) with chest pain from March 2005 to June 2013. Information on clinical presentation, methods of diagnosis, hospital stay, and outcomes were collected and analyzed. RESULTS: Among adolescents complaining of chest pain, 11 patients had SPM (11/416, 2.64%). All patients presented with pleuritic chest pain, and 54.5% reported neck pain as the most common associated complaint. Clinical findings were nonspecific, and initial chest X-ray assessment was diagnostic only in three of 11 patients. However, reassessment of chest X-ray revealed diagnostic findings of SPM in five of the remaining eight patients. CT was diagnostic in all patients, while esophagography and echocardiogram were uninformative. Symptomatic improvement was noted within 2.45+/-1.2 hours (range, 0.5 to 4) after supportive care; mean hospital stay was 4.54+/-0.99 days (range, 2 to 6). No recurrence was observed. CONCLUSION: SPM is a rare disease that should be considered in adolescent patients with pleuritic chest pain. Careful reading of initial chest X-rays is important to avoiding further unnecessary investigations. SPM is self-limited and treatment is supportive; nevertheless, if there are no indications of esophageal rupture, urgent esophagography is not recommended.

A rare case of ulcerative colitis with diffuse parenchymal lung disease, spontaneous pneumomediastinum and subcutaneous emphysema.

A 50-year-old male, a tobacco smoker, who was known to have ulcerative colitis presented with dry cough, chest pain, dysponea and frequent passage of blood and mucous mixed stools. Physical examination revealed clubbing, subcutaneous emphysema of upper chest and auscultatory findings of crunching sound over pre-cordial area and basal crepitations. Spirometry was suggestive of restrictive pattern. High resolution computed tomography (HRCT) of thorax revealed pneumomediastinum, subcutaneous emphysema, bilateral diffuse centrilobular nodules and ground-glass haziness with mosaic pattern along with posterior basal fibrotic changes. The present case documents the uncommon pulmonary involvement of spontaneous pneumomediastinum and subcutaneous emphysema diffuse parenchymal lung disease, in a patient with ulcerative colitis.

Spontaneous pneumomediastinum due to paralytic rabies

Rabies is a fatal disease resulting from rabies virus infection, causing severe neurological symptoms and ultimately death by destroying the nervous system. In general, a patient tends to see a neurologist or an infectious diseases physician, with very common and typical discipline-related signs and symptoms, such as hydrophobia, aerophobia, and mental disorders. However, we reported a rabies patient who was first admitted to see a thoracic surgeon with spontaneous pneumomediastinum.