Paeds · respiratory-sleep-and-airway
Respiratory manifestations of systemic disease
Also known as Lung involvement in systemic disease in children · Secondary lung disease in children · Pulmonary manifestations of systemic illness · Sickle cell acute chest syndrome · Connective tissue disease-associated lung disease
Fellowship guide to the lung as a target organ of systemic disease in children — the sickle cell chest that can kill in hours, the connective tissue diseases that scar the interstitium, the immunodeficiencies that let infection and bronchiectasis take hold, and the malignancies and their treatments that infiltrate, compress, and injure the growing lung.
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- New fever, chest pain, and a fresh pulmonary infiltrate in a child with sickle cell disease is acute chest syndrome, the leading cause of death in this group — treat it aggressively before the picture completes rather than waiting for it to declare itself
- A child with a known systemic disease and new breathlessness, hypoxia, or a persistent infiltrate has a lung complication until proven otherwise — never write it off as a simple chest infection
- An anterior mediastinal mass, often lymphoma, can collapse the airway and great vessels under sedation or general anaesthesia — assess the airway and cardiovascular reserve and secure a tissue diagnosis by the safest route before any sedation
- Progressive exertional breathlessness, a dry cough, and clubbing in a child with juvenile dermatomyositis, scleroderma, or lupus point to interstitial lung disease that needs imaging and lung function before it becomes irreversible fibrosis
- Recurrent, severe, or unusual sinopulmonary infection, especially with bronchiectasis, may be the presenting sign of an inborn error of immunity and warrants an immune work-up rather than another antibiotic course
- In an immunocompromised or post-transplant child, a new infiltrate can be opportunistic infection, drug or radiation injury, or transplant-related lung disease, and early bronchoscopy often changes management
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- Respiratory Medicine
- General and Community Paediatrics
- The lung as a target organ of systemic disease
- Paediatric respiratory and sleep medicine competencies
- Recognition and management of secondary lung disease in systemic illness
- Interface of respiratory, haematology, rheumatology, immunology, and oncology
- Clinical Applications
- Systematic evaluation of the child with a systemic disease and new respiratory signs
- Long and Short Cases
- Respiratory long case: the child with multisystem disease and lung involvement
- 1. Good clinical care: Managing complexity and uncertainty
- Respiratory: Recognises and manages lung involvement in systemic disease
- Foundation of Practice (FOP)
- Applied Knowledge in Practice (AKP)
- Respiratory medicine and multisystem disease
- Clinical
- Respiratory assessment in the child with systemic disease
- History taking and management planning
- General Pediatrics Content Outline — Respiratory system
- Pulmonary manifestations of haematologic, rheumatologic, immunologic, and oncologic disease
- General Pediatrics EPA: Evaluate the child with respiratory distress in systemic illness
- Patient Care: Evaluation and management of secondary lung disease in systemic illness
- Medical Knowledge: Pulmonary manifestations of systemic disease in children
- Systems-Based Practice: coordinated multidisciplinary care across specialties
- Medical Expert
- Paediatric respiratory assessment in multisystem disease
- Pediatrics Core EPA — Assessing and managing lung involvement in systemic illness
Overview & Definition
A ten-year-old with sickle cell disease comes in with a fever and chest pain, and the intern books him for a routine chest infection review in the morning. That decision can be fatal, because the same child can develop acute chest syndrome overnight and die of it. The single most important habit in this topic is to stop treating the lung as an innocent bystander and start treating it as the organ where a child's systemic disease often declares itself most dangerously. [1] [2]
Respiratory manifestations of systemic disease are the ways a disease rooted outside the lung — in the blood, immune system, connective tissues, or a malignancy — damages the airways, alveoli, interstitium, pleura, or the pulmonary vessels. The chest problem is a symptom of the systemic disease, so it is understood and treated by working back to the disease that caused it rather than as an isolated pneumonia or wheeze. [7] [6]
The reason this matters for the exam and the ward is that these children fall between specialties. The haematologist, rheumatologist, immunologist, and oncologist each own the systemic disease, but the child in front of you is short of breath, and the paediatrician has to recognise the lung complication and start the right pathway. Missing the link is how a treatable sickle chest, an evolving interstitial lung disease, or an opportunistic pneumonia gets managed as a simple infection until it is too late. [2] [12]
Framed this way, the topic becomes one clinical reflex applied across four disease groups. Whenever a child with a known systemic illness develops new breathlessness, hypoxia, chest pain, or a persistent infiltrate, ask what that particular disease does to the lung, and investigate for it deliberately. The same reflex catches the child in whom the lung complication is the very first sign of an undiagnosed systemic disease. [11] [7]
References14ShowHide
- [1]Vichinsky EP, Neumayr LD, Earles AN, et al Causes and outcomes of the acute chest syndrome in sickle cell disease. National Acute Chest Syndrome Study Group. N Engl J Med, 2000.PMID 10861320
- [2]Ramirez V, Mercier-Ross J Acute Chest Syndrome in Children with Sickle Cell Disease: A Narrative Review. Children (Basel), 2026.PMID 42194196
- [3]Rice RR, Willen SM Supportive care, prevention, and emerging therapies for acute chest syndrome in sickle cell disease. Expert Rev Hematol, 2026.PMID 42446872
- [4]van Tuijn CFJ, Gaartman AE, Nur E, et al Incentive spirometry to prevent acute chest syndrome in adults with sickle cell disease; a randomized controlled trial. Am J Hematol, 2020.PMID 32242978
- [5]Steinberg MH, Barton F, Castro O, et al Effect of hydroxyurea on mortality and morbidity in adult sickle cell anemia: risks and benefits up to 9 years of treatment. JAMA, 2003.PMID 12672732
- [6]Kurland G, Deterding RR, Hagood JS, et al An official American Thoracic Society clinical practice guideline: classification, evaluation, and management of childhood interstitial lung disease in infancy. Am J Respir Crit Care Med, 2013.PMID 23905526
- [7]Ikeda O, Tsujioka Y, Nishimura G, et al Imaging Spectrum of Childhood Interstitial Lung Diseases: Focus on Disorders Not Specific to Infancy. Radiographics, 2026.PMID 42241322
- [8]Lepage M, Pereira G, Akhalwaya S, et al MDA5-associated juvenile dermatomyositis and interstitial lung disease from rapidly progressive to silent: a report of three cases in South African children and a review of the literature. Clin Rheumatol, 2026.PMID 42018270
- [9]Mönkemöller K, Weber LT, Häusler M, et al Interdisciplinary Clinical Practice Guidelines for patient-centred management of juvenile-onset systemic lupus erythematosus. EULAR Rheumatol Open, 2025.PMID 42367668
- [10]Unal D, Cam V, Konte EK, et al Systemic JIA-Associated Lung Disease: A Multicenter Analysis of Clinical Features, Treatment Challenges, and Outcomes. Pediatr Pulmonol, 2026.PMID 42261212
- [11]Marangu-Boore D, Myint-Hpu K, Kang E, et al Bronchiectasis in Inborn Errors of Immunity: Prevalence, Predictors, and Cardiopulmonary Complications in a Genetically Characterized Cohort. J Clin Immunol, 2026.PMID 42414785
- [12]Srikanthan MA, Cheng PC, Goldfarb SB Pulmonary complications in pediatric hematopoietic stem cell transplantation: an overview for pediatricians. Curr Opin Pediatr, 2026.PMID 41983728
- [13]Furuya ME, Ramírez-Figueroa JL, Vargas MH, et al Diagnoses unveiled by early bronchoscopy in children with leukemia and pulmonary infiltrates. J Pediatr Hematol Oncol, 2012.PMID 22322936
- [14]Garey CL, Laituri CA, Valusek PA, et al Management of anterior mediastinal masses in children. Eur J Pediatr Surg, 2011.PMID 21751123