The most likely cause of fluctuating jaundice in a middle aged/elderly man is

Chitranjjan National Cancer Institute Kolkata - 2021

Medical Surgical Nursing

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Appeared in: Chitranjjan National Cancer Institute Kolkata - 2021

Explanation

Periampullary cancer is the classic cause of fluctuating jaundice among the given options.
These tumors are often friable and grow into the lumen of the duodenum at the ampulla of Vater.
They can undergo central necrosis and sloughing, which temporarily relieves the biliary obstruction and causes jaundice levels to decrease.
As the tumor regrows, the obstruction recurs, leading to the characteristic waxing and waning pattern of jaundice.

Option B: Liver fluke infestation is a geographically specific parasitic disease, primarily found in East and Southeast Asia. It is not a common cause of jaundice in the general population worldwide.
Option C: Choledochal cysts are congenital anomalies of the biliary tree. They typically manifest with symptoms in childhood or early adulthood.
Option D: Carcinoma of the head of the pancreas typically causes progressive, unremitting jaundice. The tumor is usually a firm, infiltrative mass that causes a steady and worsening obstruction of the common bile duct.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Differential diagnosis of obstructive jaundice based on clinical presentation as background academic context rather than a clinical decision trigger.
Nurses must conduct a thorough assessment of patients with jaundice, noting the pattern (fluctuating vs. progressive), stool and urine color (pale stools, dark urine), and associated symptoms like pruritus (itching).
Obstructive jaundice impairs the absorption of fat-soluble vitamins, including Vitamin K. This increases the risk of bleeding. Nurses should monitor for signs of bleeding (e.g., bruising, petechiae) and be aware that Vitamin K may be administered prophylactically before invasive procedures.
What if the jaundice was accompanied by high fever and rigors? This would suggest Charcot's triad (fever, jaundice, right upper quadrant pain), pointing towards acute cholangitis, an infection of the bile duct, which is a medical emergency requiring urgent biliary drainage.

How to Approach the Question

First, identify the key clinical features presented in the question stem: 'fluctuating jaundice' and the patient demographic, 'middle-aged/elderly man'.
The word 'fluctuating' is the most critical piece of information. It implies an obstruction that is not constant but rather comes and goes.
Consider the pathophysiology of each option. Which condition is most likely to cause an intermittent obstruction?
Evaluate Carcinoma head of pancreas: This causes a steady, progressive obstruction as the tumor grows and compresses the bile duct. This does not fit 'fluctuating'.
Evaluate Choledochal cyst: This is a congenital condition, making it an unlikely cause for a new presentation in this age group.
Evaluate Liver fluke infestation: This is a geographically limited cause and less common than malignancy in a general context.

Concept Tested & Keywords

Concept Tested: Differential diagnosis of obstructive jaundice based on clinical presentation.
Stem keywords: fluctuating jaundice, middle aged/elderly man
Lead-in keywords: most likely cause
Clinical cues: The term 'fluctuating' is the key clinical clue, pointing towards an intermittent rather than a constant obstruction.
Negative lead-in flag: false

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E6 Medicine Davidson Principles Practice 24e p. 927-929

E6 Pathology-Textbook of PATHOLOGYHarsh Mohan Part 3 (515-969) pp. 141-143, 136-138