British parents are being urged to remain vigilant after a disturbing medical case emerged where a teenage boy coughed up a complete blood clot shaped exactly like his lung's bronchial tree.
The Shocking Medical Revelation
The alarming incident occurred when 18-year-old Michael Warner from Chester began experiencing severe respiratory symptoms following a persistent chest infection. After days of intense coughing fits, the teenager expelled a perfect cast of the right-side bronchial tree - the intricate network of air passages within the lung.
What Doctors Want You to Know
Medical experts from the NHS have issued an urgent warning to families across the UK, highlighting several critical symptoms that require immediate medical attention:
- Persistent coughing lasting more than three weeks
 - Coughing up blood or rust-coloured phlegm
 - Chest pain that worsens with breathing or coughing
 - Shortness of breath or difficulty breathing
 - Unexplained weight loss or fatigue
 
Understanding the Medical Emergency
According to respiratory specialists, this rare phenomenon occurs when blood clots form within the lung's airways, taking the shape of the bronchial tree before being expelled through coughing. While uncommon, it represents a serious complication of respiratory infections that requires immediate medical intervention.
When to Seek Urgent Help
NHS consultants emphasise that any instance of coughing up blood - whether fresh red blood or darker clots - warrants immediate medical assessment. Other red flags include chest pain coupled with breathing difficulties, high fever with coughing, and symptoms that rapidly worsen.
Healthcare professionals stress that early intervention can prevent serious complications, particularly during peak respiratory illness seasons when chest infections become more prevalent across the UK.