A 52-year-old man presents with 2 months of diarrhea, abdominal pain, and fatigue. He reports a weight loss of 4 kg (8 lb). He also says his joints have been hurting recently, as well. Past medical history is unremarkable. Review of systems is significant for problems with concentration and memory. Physical examination is unremarkable. A GI endoscopy is performed with a biopsy of the small bowel. Which of the following histologic finding would most likely be seen in this patient?

Non-caseating granulomas in the small intestine

Absence of nerves in the myenteric plexus

Crypt hyperplasia with increased intraepithelial lymphocytes

A 64-year-old woman presents to the physician’s office to find out the results of her recent abdominal CT. She had been complaining of fatigue, weight loss, and jaundice for 6 months prior to seeing the physician. The patient has a significant medical history of hypothyroidism, generalized anxiety disorder, and hyperlipidemia. She takes levothyroxine, sertraline, and atorvastatin. The vital signs are stable today. On physical examination, her skin shows slight jaundice, but no scleral icterus is present. The palpation of the abdomen reveals no tenderness, guarding, or masses. The CT results shows a 3 x 3 cm mass located at the head of the pancreas. Which of the following choices is most appropriate for delivering bad news to the patient?

Set aside an appropriate amount of time in your schedule, and ensure you will not have any interruptions as you explain the bad news to the patient

Refer the patient to an oncologist without informing the patient of their cancer

Ask that a spouse or close relative come to the appointment, explain to them the bad news, and see if they will tell the patient since they have a closer relationship

Call the patient over the phone to break the bad news, and tell them they can make an office visit if they prefer

Train one of the nursing staff employees on this matter, and delegate this duty as one of their job responsibilities

A 66-year-old man comes to the physician because of yellowish discoloration of his eyes and skin, abdominal discomfort, and generalized fatigue for the past 2 weeks. He has had dark urine and pale stools during this period. He has had a 10-kg (22-lb) weight loss since his last visit 6 months ago. He has hypertension. He has smoked one pack of cigarettes daily for 34 years. He drinks three to four beers over the weekends. His only medication is amlodipine. His temperature is 37.3°C (99.1°F), pulse is 89/min, respirations are 14/min, and blood pressure is 114/74 mm Hg. Examination shows jaundice of the sclera and skin and excoriation marks on his trunk and extremities. The lungs are clear to auscultation. The abdomen is soft and nontender. The remainder of the examination shows no abnormalities. Laboratory studies show: Hemoglobin 12 g/dL Leukocyte count 5,000/mm3 Platelet count 400,000/mm3 Serum Urea nitrogen 28 mg/dL Creatinine 1.2 mg/dL Bilirubin Total 7.0 mg/dL Direct 5.5 mg/dL Alkaline phosphatase 615 U/L Aspartate aminotransferase (AST, GOT) 170 U/L Alanine aminotransferase (ALT, GPT) 310 U/L γ-Glutamyltransferase (GGT) 592 U/L (N = 5–50 U/L) An ultrasound shows extrahepatic biliary dilation. A CT scan of the abdomen shows a 2.5-cm (1-in) mass in the head of the pancreas with no abdominal lymphadenopathy. The patient undergoes biliary stenting. Which of the following is the most appropriate next step in the management of this patient?

Gemcitabine and 5-fluorouracil therapy

Whipple procedure indications for USMLE Step 2 CK: High-Yield Surgery Lessons

🔪 Core concept - The Big Chop

Whipple procedure: Before and after organ resection

A Whipple is performed for resectable tumors of the pancreatic head and periampullary region, without evidence of distant metastasis or major vascular invasion.

⭐ The classic Whipple procedure (pancreaticoduodenectomy) involves the en bloc resection of the pancreatic head, duodenum, gallbladder, and distal common bile duct.

Primary Indications (Malignant):
- Pancreatic Ductal Adenocarcinoma (PDAC): Most common reason.
- Periampullary Cancers:
  - Distal Cholangiocarcinoma
  - Duodenal Adenocarcinoma
  - Ampullary Carcinoma
- 📌 Mnemonic: Cholangio, Duodenal, Ampullary, Pancreatic (C-DAP).
Select Benign/Premalignant Conditions:
- Chronic pancreatitis with intractable pain/mass.
- IPMN or MCN with high-risk features.

🔪 Whipple Procedure: Indications

Primarily for resectable malignant tumors in the pancreatic head or periampullary region. Resectability implies no distant metastases and no encasement of major vessels like the superior mesenteric artery (SMA) or portal vein.

Malignant Tumors:
- Pancreatic Ductal Adenocarcinoma (PDAC): The most common indication. Must be confined to the head/neck/uncinate process.
- Distal Cholangiocarcinoma: Cancer of the lower third of the common bile duct.
- Ampullary Carcinoma: Tumor arising from the Ampulla of Vater.
- Duodenal Carcinoma: Affecting the second or third part of the duodenum.
- Pancreatic Neuroendocrine Tumors (PNETs): Localized to the pancreatic head.
- Cystic Neoplasms: Such as Intraductal Papillary Mucinous Neoplasm (IPMN) or Mucinous Cystic Neoplasm (MCN) with high-risk features (e.g., mural nodules, large size).

Anatomy of upper GI tract relevant to Whipple procedure

⭐ The most common indication is a resectable pancreatic ductal adenocarcinoma (PDAC) located in the head or uncinate process of the pancreas.

Benign/Other Conditions (Less Common):
- Chronic pancreatitis with an inflammatory head mass causing intractable pain or ductal obstruction.
- Severe, complex trauma to the pancreatic head and duodenum.

🚦 Diagnosis - Green Light or Red Flag?

Staging via high-resolution imaging is critical to determine resectability. A multiphase, pancreatic protocol CT is the gold standard.

⭐ The key to candidacy is assessing for unresectability: distant metastases (liver, peritoneum) or major vascular encasement (>180° contact) of the SMA or celiac artery, not just abutment.

🔴 Red Flags (Unresectable):
- Distant metastases (liver, peritoneum).
- Major arterial encasement (>180° contact with SMA/celiac axis).
- Unreconstructible SMV/portal vein occlusion.
🟢 Green Lights (Resectable):
- Tumor confined to pancreas.
- No distant metastases.
- Clear fat planes around vessels or abutment ≤180°.

⚡ Biggest Takeaways

Primary indication: Resectable pancreatic head adenocarcinoma.

Also for other periampullary tumors: distal cholangiocarcinoma, duodenal adenocarcinoma, and ampullary carcinoma.

Crucial for resectability: No distant metastases (e.g., liver, peritoneum).

Vascular contraindications: Encasement of the superior mesenteric artery (SMA) or celiac axis.

Portal vein/SMV involvement may be acceptable if reconstruction is feasible.

Rarely for benign disease like chronic pancreatitis with intractable pain.

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Whipple procedure indications