ABSTRACT
BACKGROUND: Swyer-James-MacLeod syndrome (SJMS) is a rare lung condition characterized by a unilateral lung hyperlucency and reduction in the pulmonary vasculature, with or without the presence of bronchiectasis. In the 1950s, Swyer, James, and Macleod simultaneously characterized the syndrome for the first time. It is typically diagnosed in childhood. Adult-onset cases are extremely rare, with little literature available on its clinical presentation and diagnostic challenges. Swyer-James-MacLeod syndrome can mimic other lung disorders, resulting in misdiagnosis and improper treatment. CASE PRESENTATION: A 49- year-old woman from Debre Berhan, Ethiopia, presented to the emergency department of Hakim Gizaw Teaching Hospital with symptoms and radiographic findings mimicking acute pulmonary embolism. On the basis of the clinical presentation and radiographic findings, the patient was first treated as a probable case of pulmonary embolism. Anticoagulant therapy and oxygen support were initiated. Nevertheless, additional testing using a chest computed tomography angiography revealed left lung hyperlucency, decreased vascularity, bronchiectasis, and a negative result for pulmonary embolism. As a result, Swyer-James-MacLeod syndrome was diagnosed. CONCLUSION: The symptoms of Swyer-James-MacLeod syndrome can be mistaken for pulmonary embolism, which could lead to ineffective treatment and needless expenses. In individuals presenting with symptoms suggestive of pulmonary embolism, this case emphasizes the significance of considering Swyer-James-MacLeod syndrome as a differential diagnosis, especially in the absence of established risk factors for pulmonary embolism.
Subject(s)
Lung, Hyperlucent , Pulmonary Embolism , Humans , Pulmonary Embolism/diagnosis , Pulmonary Embolism/diagnostic imaging , Female , Middle Aged , Diagnosis, Differential , Lung, Hyperlucent/diagnostic imaging , Lung, Hyperlucent/diagnosis , Computed Tomography Angiography , Anticoagulants/therapeutic use , Tomography, X-Ray Computed , Bronchiectasis/diagnostic imagingSubject(s)
Bronchiolitis Obliterans , Lung, Hyperlucent , Humans , Lung, Hyperlucent/diagnostic imaging , LungABSTRACT
El síndrome de Swyer-James-Mac Leod es una entidad poco frecuente adquirida en la infancia, generalmente tras una infección pulmonar moderada a grave de tipo bronquiolitis o neumonía, generalmente virales. Ocasionalmente se tiene el antecedente de infecciones repetidas de este tipo. Consiste en el desarrollo de enfisema hipoplásico pulmonar unilateral, que puede a veces relacionarse con bronquiectasias ipsilaterales o bilaterales, obstrucción fija al flujo aéreo y puede también asociarse a reducción del flujo sanguíneo del pulmón hipoplásico, de manera focal o difusa, con o sin tortuosidad de la vascularización proximal y a veces con una compensación del pulmón contralateral, en forma de sobredistensión e hiperflujo vascular relativo. Presentamos el caso de un varón de 79 años de edad con antecedentes de infecciones tipo bronquiolitis virales repetidas en la infancia, obstrucción fija grave al flujo aéreo y hemoptisis masiva secundaria a una infección por Pseudomonas aeruginosa sensible a la terapia antibiótica habitual.
Swyer-James-Mac Leod syndrome is a rare condition acquired in childhood, usually after a moderate to severe lung infection such as bronchiolitis or pneumonia, usually viral. Occasionally there is a history of repeated infections of this type. It consists of the development of unilateral pulmonary hypoplastic emphysema, which can sometimes be related to ipsilateral or bilateral bronchiectasis, fixed airflow obstruction, and may also be associated with reduced blood flow in the hypoplastic lung, with or without tortuosity of the proximal vascular supply and sometimes with compensation from the contralateral lung, in the form of overdistension and relative vascular hyperflow. We present the case of a 79-year-old man with a history of recurrent viral bronchiolitis-type infections in childhood, severe fixed airflow obstruction, and massive hemoptysis secondary to a Pseudomonas aeruginosa infection sensitive to usual antibiotic therapy.
Subject(s)
Humans , Male , Aged , Pulmonary Emphysema/complications , Lung, Hyperlucent/complications , Hemoptysis/etiology , Pulmonary Emphysema/therapy , Pulmonary Emphysema/diagnostic imaging , Radiography, Thoracic , Lung, Hyperlucent/therapy , Lung, Hyperlucent/diagnostic imaging , Computed Tomography AngiographyABSTRACT
No disponible
Subject(s)
Humans , Male , Young Adult , Adult , Lung, Hyperlucent/diagnostic imaging , Pneumonectomy , Asthma , DyspneaABSTRACT
No disponible
Subject(s)
Humans , Male , Young Adult , Adult , Lung, Hyperlucent/diagnostic imaging , Pneumonectomy , Asthma , DyspneaSubject(s)
Lung, Hyperlucent , Humans , Lung , Lung, Hyperlucent/diagnostic imaging , Lung, Hyperlucent/etiologySubject(s)
Humans , Female , Middle Aged , Lung, Hyperlucent/diagnostic imaging , Lung, Hyperlucent/diagnosis , Bronchiectasis , LungABSTRACT
BACKGROUND: Swyer-James-MacLeod syndrome (SJMS) is a specific form of bronchiolitis obliterans that occurs rarely, but represents recognized sequelae of common pediatric respiratory illness, and presents as unilateral hyperlucency on chest imaging. This case study describes such an incidental radiographic finding identified during the assessment of chest wall discomfort in a military pilot.CASE REPORT: A 35-yr-old military pilot presented to his flight surgeon with vague intermittent chest discomfort. Initial evaluation revealed an abnormal chest radiograph with unilateral hyperlucency and mild expiratory airflow limitation on pulmonary function testing. The evaluation also included computed tomography imaging with contrast infusion and echocardiography, though the presenting complaint had resolved. The airman was referred to our clinic for further evaluation and aeromedical recommendations regarding returning to flight duties. He was diagnosed with SJMS and recommended to be returned to flight duties.DISCUSSION: SJMS can be challenging to recognize to the untrained eye. An inflammatory response from viral or bacterial infection in childhood results in dysfunctional growth of the affected region of the lung, causing radiographic asymmetry. Although destruction of the alveoli and emphysema may occur, for most cases, there are minimal clinical sequelae. SJMS is not known to be progressive and is not associated with systemic conditions. The pilot likely had the abnormal chest radiograph at the time of commission and had not experienced any in-flight complications. His chest pain had resolved without intervention and SJMS was determined to be unlikely to impact his flight performance (such as response to supplemental oxygen) or life expectancy.Harrison MF, Cowl CT. Incidental diagnosis of Swyer-James-MacLeod syndrome in a military pilot. Aerosp Med Hum Perform. 2021; 92(4):281285.
Subject(s)
Bronchiolitis Obliterans , Lung, Hyperlucent , Military Personnel , Child , Humans , Lung , Lung, Hyperlucent/diagnostic imaging , Male , Respiratory Function TestsSubject(s)
Lung, Hyperlucent/diagnostic imaging , Pulmonary Emphysema/congenital , Pulmonary Emphysema/diagnostic imaging , Adult , Anti-Bacterial Agents/therapeutic use , Female , Humans , Lung/abnormalities , Lung/diagnostic imaging , Lung, Hyperlucent/drug therapy , Pulmonary Emphysema/drug therapy , Smoking , Steroids/therapeutic useABSTRACT
This case describes a female patient who presented with an acute on chronic deterioration in respiratory symptoms, on a background of chronic obstructive pulmonary disease and heavy cigarette smoking. Chest radiograph demonstrated long-standing hyperlucency of the right lower lobe, with further imaging later confirming the rare combination of Swyer-James-MacLeod syndrome and multiple pulmonary arteriovenous malformations within the affected lung.
Subject(s)
Arteriovenous Malformations/diagnostic imaging , Lung, Hyperlucent/diagnostic imaging , Pulmonary Disease, Chronic Obstructive/diagnostic imaging , Aged , Arteriovenous Malformations/drug therapy , Bronchodilator Agents/therapeutic use , Cigarette Smoking , Diagnosis, Differential , Female , Humans , Lung, Hyperlucent/drug therapy , Muscarinic Antagonists/therapeutic use , Nebulizers and Vaporizers , Prednisolone/therapeutic use , Pulmonary Disease, Chronic Obstructive/drug therapyABSTRACT
El síndrome de Swyer-James-MacLeod es un cuadro pulmonar muy infrecuente que se caracteriza radiológicamente por hiperclaridad pulmonar lobar o multilobar, producido por la disminución de la vascularización pulmonar, por lo general, por un proceso infeccioso previo. En ocasiones, es un hallazgo casual en el estudio por infecciones respiratorias o crisis asmáticas repetidas. Se presenta el caso de un paciente de 6 años de edad que, en el contexto de probable neumonía persistente, se realizó un amplio estudio que permitió el diagnóstico del síndrome de Swyer-James-MacLeod. Se desarrolló un abordaje terapéutico multidisciplinar con el que, hasta la fecha, la evolución ha sido satisfactoria, con tratamiento médico y fisioterapia respiratoria.
Swyer-James-MacLeod syndrome is a rare pulmonary disorder that is characterized radiologically by pulmonary lobar or multilobar hyperlucency produced by decreased pulmonary vascularization usually due to a previous infectious process. It is frequently a casual finding in recurrent pulmonary infections or in the study of asthma symptoms. We present the case of a 6-year-old patient who was diagnosed with Swyer-James-MacLeod syndrome after a persistent pneumoniae. A multidisciplinary approach was conducted, with a satisfactory progress up to date, combining medical treatment with respiratory physiotherapy.
Subject(s)
Humans , Male , Child , Lung, Hyperlucent/diagnostic imaging , Pneumonia , Bronchial Spasm , Lung, Hyperlucent/drug therapy , Lung, Hyperlucent/therapySubject(s)
Bronchi/abnormalities , Lung, Hyperlucent/diagnostic imaging , Pulmonary Artery/abnormalities , Humans , Infant , Intubation, Intratracheal/methods , Lung/diagnostic imaging , Lung, Hyperlucent/etiology , Male , Plastic Surgery Procedures/methods , Respiratory Insufficiency/etiology , Respiratory Insufficiency/therapy , Tomography, X-Ray ComputedABSTRACT
Unilateral hyperlucent lung was firstly described by Swyer and James 1950s. After that, some patients with same disease were detected by Macleod . Then this syndrome was named as Swyer- James-Macleod syndrome (SJMS), and this syndrome includes a smaller or normal sized unilateral hyperlucent lung. The diagnosis of SJMS includes a detailed evaluation and the exclusion of other reasons of unilateral hypertranslucency. In literature, small groups of patients with this syndrome have been described. This paper reports a 45-year-old male presented to our emergency department with chest pain after fall from height 24 h ago. In his computed tomography no rib fracture, pneumothorax and hemothorax. But an abnormal image (5.5 cm hyperlucent area) was seen in his left lung. This report aims to present one of incidentally diagnosed rare case of SJMS.
Subject(s)
Incidental Findings , Lung, Hyperlucent/diagnostic imaging , Accidental Falls , Humans , Male , Tomography, X-Ray ComputedABSTRACT
BACKGROUND AND AIM: In patients with pulmonary embolism (PE), a pulmonary radiograph may reveal oligemic fields (the Westermark sign) associated with sites of occlusion of the pulmonary arteries, interruption or loss of the artery line (the knuckle sign), and even unilateral hyperlucency attributable to reduced overall lung vascularity. In Swyer-James-Macleod syndrome (SJMS), which develops as a result of bronchiolitis obliterans, unilateral hyperlucency is evident because of emphysema and hypoplasia of the pulmonary artery and its branches. Therefore, SJMS cases with clinical and laboratory data compatible with PE may in fact be confused with PE. The cases of six adult patients who were initially presumed to have PE but on further investigation were diagnosed with SJMS are presented in this report, which thus can serve as a guide for diagnosis of similar cases in future. METHODS: We studied six adult patients who presented with dyspnea. Their pulmonary radiographs revealed lobar/unilateral hyperlucency and PE was initially suspected. The pulmonary artery and branches thereof exhibited parenchymal emphysema and hypoplasia, and we thus diagnosed SJMS. RESULTS: We studied 4 males and 2 females with a mean age of 51 years (range, 20-73 years). Left lung involvement was evident in five cases. CONCLUSION: Unilateral hyperlucency may be a feature of both PE and SJMS. Although these conditions are very different, both present similarly in radiographic terms and may be easily confused when the clinical data and the anamnesis raise a suspicion of PE, causing unnecessary testing and treatment.