A 62-year-old male patient undergoes pancreaticoduodenectomy (Whipple procedure) for pancreatic head carcinoma. On postoperative day 3, drain amylase is 8400 U/L (>3× upper limit of serum amylase). He is hemodynamically stable with no clinical peritonism. According to the ISGPF classification, what grade of postoperative pancreatic fistula (POPF) does this represent?
- A Biochemical leak (formerly Grade A POPF) ✓
- B Grade B POPF
- C Grade C POPF
- D Not a POPF — drain amylase alone is not diagnostic
Explanation
The 2016 International Study Group of Pancreatic Fistula (ISGPF) update reclassified Grade A POPF as 'biochemical leak' — defined as drain amylase >3× the upper limit of normal serum amylase on or after postoperative day 3, with no clinical impact and no change in management. Only Grade B (requiring change in management: prolonged drainage, antibiotics, or radiological intervention) and Grade C (requiring reoperation or causing organ failure/death) are now termed true POPF. This reclassification removes the confounding of benign biochemical leaks from clinically significant fistulas.
Reference: Bailey & Love's Short Practice of Surgery, 27th ed.
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Written and medically reviewed by the StethoPrep medical team.