The mnemonic
Four Fs
What each word stands for
- FemaleHigher risk in women
- FatObesity
- FertileMultiparity and oestrogen exposure
- FortyPeak risk in middle age
Why it matters clinically
Quick screen for the typical cholesterol gallstone patient.
Where it stops being reliable
Pigment stones, haemolysis and young or thin patients do not fit the pattern.
Teaching aid, still awaiting independent review. Confirm facts in a standard source.