Correct Answer: B. Longitudinal pancreaticojejunostomy
Longitudinal pancreaticojejunostomy (LPJ) is the gold-standard surgical approach for chronic pancreatitis with ductal dilatation (≥7 mm) and intraductal calculi. The pathophysiology of chronic pancreatitis involves progressive fibrosis, ductal strictures, and stone formation leading to ductal hypertension and recurrent pain. LPJ addresses this by creating a wide anastomosis between the opened pancreatic duct (longitudinally incised from the tail to the head) and a Roux-en-Y jejunal loop, effectively decompressing the dilated duct and allowing drainage of secretions and calculi. This procedure preserves maximum pancreatic parenchyma while relieving symptoms in 70–90% of patients. The 10 mm ductal dilatation is a key indicator for LPJ—it indicates significant obstruction amenable to ductal drainage rather than resection. In Indian practice (as per Bailey & Love and standard HPB surgical guidelines), LPJ is preferred over resective procedures in patients with preserved pancreatic function and ductal dilation, particularly when the main pancreatic duct is dilated and calculi are present but the patient does not have malignancy or head mass.
Why the other options are wrong
A. Coring of pancreas head — Coring (or pancreatic head coring) is an obsolete procedure with poor long-term outcomes and high morbidity. It does not address the underlying ductal obstruction or provide adequate drainage. This is rarely performed in modern HPB surgery and is not indicated when ductal dilatation is present. NBE includes this as a distractor for students who confuse it with ductal decompression techniques. C. ERCP and sphincterotomy — ERCP with sphincterotomy is an endoscopic intervention suitable for acute pancreatitis or early-stage chronic pancreatitis with ductal obstruction, but it is NOT a surgical procedure and is inadequate for recurrent attacks with established ductal dilatation and calculi burden. Surgical intervention is indicated when medical/endoscopic management fails. This trap targets students who confuse endoscopic and surgical management thresholds. D. Pancreaticoduodenectomy — Pancreaticoduodenectomy is a major resective procedure reserved for chronic pancreatitis with head mass, malignancy suspicion, or failed LPJ. It carries significant morbidity and mortality and is not first-line for uncomplicated chronic pancreatitis with ductal dilatation. Resection is avoided when parenchyma-sparing drainage (LPJ) can relieve symptoms, as per standard surgical principles in India.
High-Yield Facts
- Ductal dilatation ≥7 mm in chronic pancreatitis is the key indicator for longitudinal pancreaticojejunostomy over resective surgery.
- LPJ success rate is 70–90% for pain relief in chronic pancreatitis with ductal obstruction and preserved parenchymal function.
- Intraductal calculi + dilated duct = surgical indication; ERCP is reserved for acute obstruction or failed conservative management.
- Pancreaticoduodenectomy is reserved for head mass, malignancy suspicion, or failed LPJ—not first-line for simple ductal obstruction.
- Roux-en-Y jejunal anastomosis is the standard reconstruction after longitudinal pancreatic duct opening in LPJ.
Mnemonics
DILATE = LPJ Duct Inflamed, Large (≥7 mm), Acute pain, Tones (calculi), Exhausted medical therapy → Longitudinal Pancreaticojejunostomy. Use this when you see ductal dilatation + stones in chronic pancreatitis. RESECT only if MASS RESECT (pancreaticoduodenectomy) only if MASS (head mass, malignancy, or failed LPJ). Otherwise, DRAIN (LPJ). Quick rule to avoid over-resection.
NBE Trap
NBE pairs "intraductal calculi" with "ERCP" to trap students who confuse endoscopic management (for acute obstruction) with surgical management (for recurrent attacks with established ductal pathology). The presence of recurrent attacks and 10 mm ductal dilatation mandates surgery, not endoscopy.
Clinical Pearl
In Indian HPB centres, LPJ is the workhorse procedure for symptomatic chronic pancreatitis with ductal obstruction—it preserves pancreatic tissue and avoids the high morbidity of resection. Patients often return to normal diet and work within 6–8 weeks, making it the preferred choice in our resource-conscious setting.
_Reference: Bailey & Love Ch. 62 (Pancreas); Harrison Ch. 346 (Chronic Pancreatitis)_