Anti-synthetase syndrome in a child with pneumomediastinum: a case report and literature review.

BACKGROUND: Anti-synthetase syndrome (ASS) is a group of rare clinical subtypes within inflammatory myopathies, predominantly affecting adult females. Instances of critical illness associated with ASS in children are even rarer. CASE PRESENTATION: We report the case of a 7-year-old boy finally diagnosed with ASS, combined with pneumomediastinum. He presented with intermittent fever persisting for 12 days, paroxysmal cough for 11 days, chest pain, and shortness of breath for 4 days, prompting admission to our hospital. Pre-admission chest CT revealed diffuse pneumomediastinum, subcutaneous pneumatosis in the neck and bilateral chest wall, consolidation, atelectasis, and reticular nodular shadowing in both lungs, as well as pericardial effusion and bilateral pleural effusions. Laboratory tests revealed a positive result for serum MP immunoglobulin M (MP-IgM) and MP immunoglobulin G (MP-IgG). The patient was initially diagnosed with mycoplasma pneumoniae (MP) infection, and following 3 days of antibiotic treatment, the patient's tachypnea worsened. Positive results in muscle enzyme antibody tests included anti-PL-12 antibody IgG, anti-Jo-1 antibody IgG, and anti-RO-52 antibody IgG. Ultrasonography detected moderate effusions in the right shoulder, bilateral elbow, and knee joints. Corticosteroids pulse therapy was initiated on the 27th day following disease onset, and continued for 3 days, followed by sequential therapy for an additional 12 days. The child was discharged on the 43rd day, and subsequent follow-up revealed a significant improvement in consolidation and interstitial lesions in both lungs. CONCLUSIONS: ASS in children may combine with rapidly progressive interstitial lung disease (RPILD) and pneumomediastinum. It is crucial to promptly identify concurrent immunologic abnormalities during the outbreak of MP, particularly when the disease exhibits rapid progression with ineffective conventional antibiotic therapy.

Integrated Chinese herbal medicine and Western medicine successfully resolves spontaneous subcutaneous emphysema and pneumomediastinum in a patient with severe COVID-19 in Taiwan: A case report.

CASE: Serious complications of severe coronavirus disease 2019 (COVID-19) include subcutaneous emphysema (SE) and pneumomediastinum, which are complicated to treat with conventional Western medicine. We report how combining Chinese herbal medicine (CHM) with Western medicine quickly resolved a patient's COVID-19-associated pulmonary complications, shortened hospital stay and improved quality of life. CLINICAL FEATURES AND OUTCOME: A 59-year-old male with a history of smoking and tumors was diagnosed with COVID-19 in May 2021. At hospitalization, his oxygen saturation (SpO2) was 80%, he had a continuous severe cough, rapid shallow breathing, spontaneous SE and pneumomediastinum. By Day 4 of hospitalization, his condition was worsening despite standard care, so CHM was added. After 3-5 days, his coughing had lessened and supplementary oxygen therapy was de-escalated. Nine days after starting CHM, the SE had completely resolved and the patient avoided intubation. His WHO OS 10-point Scale score had fallen from 6 to 3 points and the modified Medical Research Council Dyspnea Scale score from 4 to 2 points. He was hospitalized for 19 days. At 1 week post-discharge, the patient could handle most of his daily activities and experienced minor shortness of breath only when performing labor-intensive tasks. At 1 month, his work output was restored to pre-COVID-19 levels. CONCLUSION: CHM combined with standard Western medicine improved pulmonary function, respiratory rate, blood oxygen saturation and shortened the hospital stay of a patient with severe COVID-19 complicated by SE and pneumomediastinum.

[A Case of Drug-Induced Pneumomediastinum Preceding Interstitial Pneumonitis Onset during Treatment with a First-Line Regimen of GnP in a Patient with Unresectable Pancreatic Cancer].

BACKGROUND: The highest prevalence of drug-induced interstitial pneumonitis(IP)occurs in patients receiving antineoplastic agents, such as cytotoxic chemotherapeutic drugs, molecular targeted drugs, and immune checkpoint inhibitors. A certain period of the treatment for IP requires discontinuation of the anticancer therapy, resulting in progression of the malignant status. CASE: A 70-year-old man was incidentally diagnosed with locally advanced unresectable pancreatic cancer in the course of his treatment for ventricular dysrhythmia. After the insertion of a pacing instrument, he was ensured to be eligible to receive combination chemotherapy with gemcitabine and nab-paclitaxel(GnP)as the primary regimen. Shortly after the second course of GnP, the patient had high fever and developed pneumomediastinum 3 days prior to the onset of IP. The GnP treatment was suspended, and the IP was treated with pulse steroid therapy. The respiratory disorder took approximately 3 months to resolve; however, this concomitantly led to aggravation of the malignancy, which developed multiple metastases to the liver. The patient was no longer allowed to receive antineoplastic treatment. CONCLUSION: Although GnP may be a key regimen for the treatment of unresectable pancreatic cancer, patients should be closely monitored to ensure early detection of adverse events, such as interstitial pneumonia. Furthermore, drug-induced pneumomediastinum may be a precursor to the onset of interstitial pneumonia.

Epidural pneumorrhachis, a rare complication of asthma exacerbation.

Introduction: An association between pneumorrhachis and asthma exacerbation is uncommon. However, we present a clinical case involving a patient with exacerbated asthma, subcutaneous emphysema, spontaneous pneumomediastinum (SPM), and pneumorrhachis. Case study: The patient was an 18-year-old male with asthma since childhood who only relied on salbutamol to control his asthma symptoms. Results: The patient suddenly experienced dyspnea, chest tightness, and paroxysmal coughing, which prompted him to visit the emergency department. Upon arrival, subcutaneous emphysema was detected on the face, neck, thorax, and left forearm. Chest X-ray showed air in the mediastinum, neck, left supraclavicular region, and chest, all of which were verified by a computed tomography scan that also revealed air in the epidural region. At the hospital, his treatment focused on preventing asthma exacerbation and managing associated symptoms. Conclusion: When a patient has asthma exacerbation that is accompanied by SPM and extensive emphysema, the presence of epidural pneumorrhachis should not be overlooked.

Pneumocystis jirovecii-related spontaneous pneumothorax, pneumomediastinum and subcutaneous emphysema in a liver transplant recipient: a case report.

BACKGROUND: Pneumocystis pneumonia (PCP) is a common opportunistic infection caused by Pneumocystis jirovecii. Its incidence at 2 years or more after liver transplant (LT) is < 0.1%. PCP-related spontaneous pneumothorax and/or pneumomediastinum is rare in patients without the human immunodeficiency virus, with an incidence of 0.4-4%. CASE PRESENTATION: A 65-year-old woman who had split-graft deceased-donor LT for primary biliary cirrhosis developed fever, dyspnea and dry coughing at 25 months after transplant. Her immunosuppressants included tacrolimus, mycophenolate mofetil, and prednisolone. PCP infection was confirmed by molecular detection of Pneumocystis jirovecii,in bronchoalveolar lavage. On day-10 trimethoprim-sulphamethoxazole, her chest X-ray showed subcutaneous emphysema bilaterally, right pneumothorax and pneumomediastinum. Computed tomography of the thorax confirmed the presence of right pneumothorax, pneumomediastinum and subcutaneous emphysema. She was managed with 7-day right-sided chest drain and a 21-day course of trimethoprim-sulphamethoxazole before discharge. CONCLUSION: Longer period of PCP prophylaxis should be considered in patients who have a higher risk compared to general LT patients. High index of clinical suspicion, prompt diagnosis and treatment with ongoing patient reassessment to detect and exclude rare, potentially fatal but treatable complications are essential, especially when clinical deterioration has developed.

Pneumomediastinum caused by occult paraquat poisoning: Case report.

RATIONALE: Paraquat is a widely applied contact herbicide that is highly poisonous. About 20% of patients with paraquat poisoning develop pneumomediastinum as a complication with a mortality rate of almost 100%. PATIENT CONCERNS: A 15-year-old boy presented with a 1-month history of retrosternal chest pain with no obvious cause. High-resolution computed tomography showed pneumomediastinum. DIAGNOSES: After all likely causes of pneumomediastinum were eliminated, the diagnosis of occult paraquat poisoning was made when serum paraquat concentration was revealed at 467.40 ng/mL, despite the patient's denial of ingestion or contact. INTERVENTIONS: Hemoperfusion, intravenous glucocorticoid, and ulinastatin was administered for 3 days with other routine treatment against paraquat poisoning. The serum paraquat concentration decreased to zero. OUTCOMES: Despite the general high mortality and poor prognosis of paraquat poisoning, the patient recovered and was completely asymptomatic at his 3-month follow-up. LESSONS: Paraquat poisoning should be suspected as a differential diagnosis when patients present with pneumomediastinum without recognizable cause.

Spontaneous pneumomediastinum in dermatomyositis: a case series and literature review / Pneumomediastino espontâneo na dermatomiosite: uma série de casos e revisão de literatura

OBJECTIVES: To describe a case series of spontaneous pneumomediastinum in dermatomyositis and to review the literature. METHODS: This was a retrospective single-center case series, reporting 9 patients with pneumomediastinum and defined dermatomyositis, followed from 2005 to 2017. RESULTS: Median age of patients: 33 years; cutaneous and pulmonary involvement in all cases; constitutional symptoms in 88.8% of patients; involvement of the joints in 11.1%, gastrointestinal tract in 44.4%, and muscles in 77.7%; subcutaneous emphysema was observed in 55.5% and pneumothorax in 11.1%, respectively. Muscle weakness was observed in 77.7% of cases and with a median level of serum creatine phosphokinase of 124U/L. Drawing on results for our literature review, the overall analysis showed that the risk factors associated with spontaneous pneumomediastinum were: (a) a history of interstitial pneumopathy; (b) normal or low levels of muscle enzymes; (c) previous use of systemic glucocorticoid; (d) over 50% of patients had subcutaneous emphysema; (e) high mortality as a consequence of severity of the interstitial lung disease. CONCLUSIONS: Our case series revealed that pneumomediastinum is a rare complication in dermatomyositis that occurs in patients with a history of interstitial pneumopathy and may be accompanied by subcutaneous emphysema and pneumothorax.

OBJETIVOS: Descrever série de casos de pneumomediastino espontâneo em portadores de dermatomiosite e revisar a literatura. MÉTODOS: Trata-se de série de casos, único centro, relatando 9 pacientes com pneumomediastino e dermatomiosite definida, acompanhados de 2005 a 2017. RESULTADOS: A mediana da idade dos pacientes foi de 33 anos. Sintomas constitucionais estavam presentes em 88,8% dos pacientes. Houve acometimento cutâneo e pulmonar em todos os casos, acometimento das articulações em 11,1%, trato gastrointestinal em 44,4% e musculatura em 77,7% dos pacientes. Enfisema subcutâneo foi observado em 55,5% e pneumotórax em 11,1%, respectivamente. A fraqueza muscular foi observada em 77,7% dos casos, com um nível médio de creatinofosfoquinase sérica de 124U/L. Com base nos resultados da revisão da literatura, a análise geral mostrou que: os fatores de risco associados ao pneumomediastino espontâneo foram: história de pneumopatia intersticial, níveis normais ou baixos de enzimas musculares, uso prévio de glicocorticoide sistêmico; >50% dos pacientes tiveram enfisema subcutâneo; houve alta mortalidade como consequência da gravidade da doença pulmonar intersticial. CONCLUSÕES: Nossa série de casos revelou que o pneumomediastino é uma complicação rara na dermatomiosite e que ocorre em pacientes com história de pneumopatia intersticial e pode ser acompanhada por enfisema subcutâneo e pneumotórax.

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)

The Effective Treatment with Cyclosporine of a Ulcerative Colitis Patient with Concurrent Idiopathic Thrombocytopenic Purpura Who Subsequently Developed Spontaneous Pneumomediastinum.

Although extraintestinal manifestations of inflammatory bowel diseases are not uncommon, few reports have described concurrent idiopathic thrombocytopenic purpura (ITP). Spontaneous pneumomediastinum is also a rare complication of ulcerative colitis (UC). This report describes the case of a 14-year-old boy who experienced recurrent ulcerative colitis 3 months after temporary improvement following treatment with prednisolone (20 mg/day) and granulocyte/monocyte adsorption apheresis. His platelet counts decreased, suggesting ITP. The dosage of prednisolone was increased to 60 mg/day; however, his thrombocytopenia did not improve and he suddenly developed pneumomediastinum. A continuous infusion of cyclosporine increased his platelet counts and improved his ulcerative colitis. Cyclosporine should be considered when steroid-resistant ITP accompanies UC.

Cervicofacial and mediastinal emphysema complicating tooth extraction in an elderly patient: a preventable complication.

Subcutaneous emphysema is widely documented in the literature and well known by doctors and dentists. However, subcutaneous emphysema following tooth extraction is not very common.We report the case of a 72-year-old female who presented to the emergency department of the Bunbury Hospital in Bunbury in the state of Western Australia in Australia, with subcutaneous emphysema of the face and neck with extension into the mediastinum, following a complicated tooth extraction in 2016. It was a dramatic and scary occurrence for both the patient and dentist, but totally preventable. The investigations and treatment could have been very invasive. However, with limited and essential management, the process was kept simple and safe for the patient.

Neumomediastino espontáneo: ¿más frecuente de lo que pensamos? / Spontaneous pneumomediastinum in Primary Care: more common than we think?

El neumomediastino es infrecuente en Pediatría, posiblemente se deba a que es un cuadro infradiagnosticado. Los síntomas clásicos son disnea y dolor torácico de aparición brusca, así como enfisema subcutáneo en algunas ocasiones. Para su diagnóstico suele bastar con una radiografía simple de tórax. El tratamiento es conservador en la mayoría de los casos, con analgesia oral y reposo. Ya que la evolución suele ser benigna, existiendo bajo riesgo de complicaciones o recurrencias, son innecesarias pruebas complementarias, así como hospitalizaciones. Presentamos dos casos clínicos que acuden a consulta por cuadros diferentes, con un diagnóstico final similar (AU)

Pneumomediastinum is uncommon in Pediatrics, possibly due to an underdiagnosed pathology. The classic symptoms are shortness of breath and chest pain of sudden onset and sometimes subcutaneous emphysema. Usually it is sufficient with a simple chest radiograph for the diagnosis. Treatment is conservative in most cases, with oral analgesia and rest. Since evolution is usually benign, and there is low risk of complications or recurrences, additional tests and hospitalizations are unnecessary. We present two clinical cases who consult for different pathologies, but finally had the same diagnosis (AU)

Spontaneous pneumomediastinum following pneumonia in a 23-year-old male patient.

Spontaneous pneumomediastinum (SPM) is defined as the presence of interstitial air in the mediastinum without any apparent precipitating factor. We present a case of 23 year old male patient, who has been referred to our outpatient clinic with the complaints of sudden chest pain, dyspnea followed by pneumonia and was diagnosed as SPM. The patient was treated with ampicillin sulbactam (4 gr/day) and methylprednisolon (20 mg/day) for 4 days. and oral intake was stopped during treatment. Post treatment, it was observed that the crepitations were disappeared thoroughly and vesicular sounds were heard by oscultation. The control values of arterial blood gas was as following: pH:7,39 pO2:95 mmHg, pCO2:37 mmHg, SaO2: %97. In the 5th day his oral intake was started and he was discharged.

Unique case of pneumomediastinum due to penetrating injury to the mediastinum.

Pneumomediastinum is a rare condition, and mostly occurs following traumatic or iatrogenic tracheal and oesophageal perforation, but spontaneous pneumomediastinum has also been described. We report a case of a 17-year-old woman who presented with a penetrating neck wound after a fall down the stairs. She had an extensive pneumomediastinum without signs of tracheal or oesophageal laceration, rib fractures, pneumothorax or haematothorax. The contaminated wound was surgically explored and extensively lavaged. Prophylactic antibiotic treatment was given and the patient recovered without complications. Direct perforating trauma to the mediastinum is a severe entity, but can be treated by lavage and prophylactic antibiotic therapy.

[Cervicofacial emphysema and pneumomediastinum after dental treatment]. / Cervikofacialt emfysem og pneumomediastinum efter tandbehandling.

Pneumomediastinum with subcutaneous emphysema is a rarely observed complication of dental treatment. It is a potentially dangerous condition, but the majority of cases are self-limiting and benign. We present a case of pneumomediastinum and cervicofacial emphysema that occurred after dental treatment. The rapid onset of swelling and dyspnoea are often misinterpreted as an allergic reaction to the anaesthesia used during the procedure. Physicians and dentists should be aware that cervicofacial emphysema can cause swelling after dental procedures and may mimic an allergic reaction.