A 58-year-old man from rural Maharashtra presents with progressive jaundice for 3 weeks, pale stools, and dark urine. He denies abdominal pain or fever. On examination, he is afebrile, with icterus and a palpable gallbladder. Laboratory investigations show total bilirubin 8.2 mg/dL (conjugated 7.1 mg/dL), alkaline phosphatase 420 IU/L, and ALT 95 IU/L. Abdominal ultrasound reveals dilated intrahepatic and extrahepatic bile ducts with a distal CBD stricture, but no gallstones. CT abdomen shows a hypodense lesion in the pancreatic head with upstream ductal dilatation. What is the most appropriate next step in surgical management?

Explanation

## Clinical Diagnosis This patient has **pancreatic head cancer** presenting with obstructive jaundice. The key diagnostic clues are: - Painless progressive jaundice (Courvoisier's sign: palpable gallbladder) - Distal CBD stricture with upstream dilatation - Hypodense pancreatic head lesion on CT - Elevated alkaline phosphatase > ALT (cholestatic pattern) ## Surgical Workup Algorithm for Resectable Pancreatic Cancer ```mermaid flowchart TD A[Obstructive jaundice + pancreatic head lesion]:::outcome --> B{Resectability assessment}:::decision B -->|Imaging: no vascular invasion, no distant mets| C[Staging laparoscopy ± EUS]:::action C --> D{Metastases found?}:::decision D -->|No| E[Whipple's pancreaticoduodenectomy]:::action D -->|Yes| F[Palliative bypass]:::action B -->|Locally advanced/unresectable| F E --> G[Curative resection]:::outcome F --> H[Palliative relief]:::outcome ``` ## Why Whipple's After Staging? **High-Yield:** Staging laparoscopy detects occult peritoneal/liver metastases in 10–15% of CT-staged resectable cases, avoiding unnecessary laparotomy. EUS provides tissue diagnosis (FNA) and assesses vascular involvement. **Key Point:** In resectable pancreatic head cancer (no vascular invasion, no distant metastases), **Whipple's pancreaticoduodenectomy is the only curative option**. Preoperative biliary drainage is NOT routinely recommended in fit patients with resectable disease, as it increases infection risk and delays surgery. **Clinical Pearl:** Courvoisier's gallbladder (painless distension) in a patient with jaundice suggests malignant obstruction, NOT gallstones (which usually cause pain-related contraction). ## Staging Laparoscopy Rationale | Finding | Implication | Action | |---------|-------------|--------| | No peritoneal/liver mets | Proceed to Whipple's | Curative intent | | Peritoneal carcinomatosis | Unresectable | Palliative bypass ± chemotherapy | | Vascular invasion on EUS | Locally advanced | Neoadjuvant chemo, then reassess | [cite:Harrison 21e Ch 297]