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In Ovo Xenografting of Patient-Derived Acute Lymphoblastic Leukemia (ALL) Cells (PDX-ALL)
Published on: August 1, 2025
Subglottic acute lymphoblastic leukaemia
Shilpa Ojha1, Julian Gaskin2, Michael Saunders3
1Gloucestershire Hospitals NHS Foundation Trust, Cheltenham, UK.
Insights
A rare case of childhood leukaemia presented as a subglottic mass, mimicking recurrent croup. Early endoscopy is crucial for diagnosing this unusual extramedullary leukaemia presentation in children.
Area of Science:
- Pediatric Oncology
- Otolaryngology
- Hematology
Background:
- Acute lymphoblastic leukaemia (ALL) is a common childhood cancer.
- Airway obstruction is a rare but serious presentation of ALL.
- Recurrent croup is a common pediatric ENT diagnosis.
Observation:
- A 1-year-old boy presented with a history of recurrent croup.
- Endoscopic examination revealed a subglottic mass.
- The mass was diagnosed as localised acute lymphoblastic leukaemia.
Findings:
- This is the first reported case of localised ALL presenting as a subglottic mass in a pediatric patient.
- The presentation mimicked croup, delaying definitive diagnosis.
- Extramedullary leukaemia can manifest as a localized mass.
Implications:
- Broaden the differential diagnosis for 'recurrent croup' in children.
- Consider extramedullary leukaemia in children with persistent airway symptoms.
- Maintain a low threshold for endoscopic evaluation in suspected cases.
Abstract:
Acute lymphoblastic leukaemia (ALL) is one of the the most common malignancies of childhood and can occasionally present as acute airway obstruction. We present the unusual case of a 1-year-old boy who was referred to our Paediatric Otolaryngology (ENT) clinic with a recurrent history of croup. This is the first reported case of localised ALL presenting as a subglottic mass in a paediatric patient. It highlights the need to have a broader differential diagnosis in children presenting with 'recurrent croup' including extramedullary presentation of leukaemia and to have a low threshold for performing endoscopy in such cases.
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