Transillumination of the chest is recommended when the neonatal/pediatric specialist suspects the presence of which condition?

• A. Tension pneumothorax
• B. Tracheoesophageal fistula
• C. Myelomeningocele
• D. Pleural effusion

Answer: (A)

Shining light through the chest is a quick bedside way to detect air in the pleural space. If there is a pneumothorax, especially a tense one, air accumulates under pressure in the chest and makes that side more translucent when illuminated, so you’ll see a distinct glow or translucency on the affected side. This rapid cue helps confirm the presence of air where it shouldn’t be, guiding urgent management before more definitive imaging is available.

Tracheoesophageal fistula doesn’t create an obvious chest air collection detectable by transillumination; it presents with feeding difficulties, drooling, coughing or choking with feeds, and risk of aspiration. Myelomeningocele is a spinal neural tube defect affecting the spine and nervous system, not a condition of the chest airspaces. Pleural effusion involves fluid rather than air in the pleural space, so transillumination would not produce the same glow and is not the scenario this test is best used for.