Trauma and paediatrics are the themes for this month's collection of papers. Starting off is a review of the effectiveness of prehospital ultrasound in detecting lung injury, with some surprising statistics. Next is a letter on the topic of self-presentation by paediatric patients with major trauma, which is thankfully a rare occurrence. The third paper looks at prehospital testing of trauma patients for  low fibrinogen levels, a condition which can lead to worse bleeding, increased transfusions, and higher mortality. The final paper discusses the worrying topic of delayed presentation with testicular pain, a phenomenon which leads to significantly lower salvage rates. This can arise from lack of information or embarrassment, particularly in younger males.   Read the highlights: April 2025 Primary Survey   Diagnostic accuracy of prehospital ultrasound in detecting lung injury in patients with trauma: a systematic review and meta-analysis Identifying the walk-in wounded: paediatric major trauma patients self-presenting to a paediatric major trauma centre Comparison between point-of-care international normalised ratio, COAST, TICCS and truncated FibAT scores to rule in clinically significant hypofibrinogenaemia in the prehospital setting Experiences and perceptions of acute testicular pain, with a focus on reasons for delayed presentation to hospital: a qualitative evidence synthesis   The EMJ podcast is hosted by: Dr. Richard Body, EMJ Deputy Editor, University of Manchester, UK (@richardbody) Dr. Sarah Edwards, EMJ Semior Associate Editor and Social Media Editor, Royal Derby Hospital, UK (@drsarahedwards) You can subscribe to the EMJ podcast on all podcast platforms to get the latest podcast every month. If you enjoy our podcast, please consider leaving us a review or a comment on the EMJ Podcast iTunes (https://apple.co/4bfcMU0) or Spotify (https://spoti.fi/3ufutSL) page.