Backward reasoning: a residual path
What do you choose as the best combination of symptoms for this 60-year-old female patient ?
1. constipation
2. abdominal pain
3. nausea, vomiting
4. fever, abdominal pain
5. nausea, abdominal pain, vomiting
Umbilical hernia. Nausea, vomiting and intermitent abdominal pain