The Pedigree That Did Not Fit - Genetics clinical simulation case. The mother is sitting across from you in the genetics clinic, holding lab reports. The...
Age: 45 • Setting: Outpatient Consultation
Clinical Presentation & History
The mother is sitting across from you in the genetics clinic, holding lab reports. The child is in her lap, breathing comfortably on pancreatic enzyme replacement and recent airway clearance. She has opened the envelope of the molecular report and looks unsettled.
Differential Diagnoses to Consider
Primary differential diagnoses evaluated in this clinical scenario:
Non-paternity with biological father being a CF carrier
Sample swap in the laboratory between mother and child
Maintain a systematic approach from history taking to definitive intervention.
Diagnostic stewardship minimizes patient harm and diagnostic delay.
Diagnostic Pitfalls & Cognitive Error Warnings
Key reasoning traps and premature closure risks associated with this presentation:
Premature closure without complete investigation carries high diagnostic error risk.
Test Your Clinical Reasoning in Real Time
Step into the active clinician role for this case. Order diagnostic tests, analyze live laboratory panels, and navigate branching clinical decisions with real-time feedback.