Question:
Which of the following may cause biliary obstruction?
Which of the following may cause biliary obstruction?
Show Hint
Which of these is a liver fluke that lives inside the bile ducts?
Updated On: Jun 24, 2026
- Ancylostoma
- Enterobius
- Strongyloides
- Clonorchis
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: The question asks which parasite lives in the biliary tract and can block bile flow.
Step 2: Clonorchis sinensis, the Chinese liver fluke, lives in the intrahepatic bile ducts. The adult flukes and their eggs cause inflammation, fibrosis and obstruction of the bile ducts, and chronic infection is linked to cholangiocarcinoma. So option D is correct.
Step 3: Option A is wrong. Ancylostoma duodenale (hookworm) attaches to the small intestine and causes iron deficiency anaemia, not biliary disease.
Step 4: Option B is wrong. Enterobius vermicularis (pinworm) lives in the caecum and colon and causes perianal itching; it does not enter the bile ducts.
Step 5: Option C is wrong. Strongyloides stercoralis lives in the small intestine and causes autoinfection and hyperinfection in the gut and lungs, not biliary obstruction.
Conclusion: The liver fluke that obstructs bile ducts is Clonorchis. Answer: option D.
Step 2: Clonorchis sinensis, the Chinese liver fluke, lives in the intrahepatic bile ducts. The adult flukes and their eggs cause inflammation, fibrosis and obstruction of the bile ducts, and chronic infection is linked to cholangiocarcinoma. So option D is correct.
Step 3: Option A is wrong. Ancylostoma duodenale (hookworm) attaches to the small intestine and causes iron deficiency anaemia, not biliary disease.
Step 4: Option B is wrong. Enterobius vermicularis (pinworm) lives in the caecum and colon and causes perianal itching; it does not enter the bile ducts.
Step 5: Option C is wrong. Strongyloides stercoralis lives in the small intestine and causes autoinfection and hyperinfection in the gut and lungs, not biliary obstruction.
Conclusion: The liver fluke that obstructs bile ducts is Clonorchis. Answer: option D.
Was this answer helpful?
0
0
Top NEET PG Microbiology Questions
- A patient hailing from Delhi presents with fever, arthralgia, and extensive petechial rash for 3 days. Lab investigations revealed a hemoglobin of 9 g/ dL, a white blood cell count of 9000 cells/mm3, a platelet count of 20000 cells/mm3, and a prolonged bleeding time. The clotting time was normal. What is the most likely diagnosis?
- Which of the following statements is true about Trichomonas vaginalis?
- A lady from West Rajasthan presented with an ulcer surrounded by erythema on the right leg. Microscopy of the biopsy from the edge of the ulcer showed organisms with dark staining nuclei and kinetoplast. What is the most likely causative agent?
- A child presents with a fever and a rash. Urine examination showed cells with owl's eye appearance. What is the most likely diagnosis?
- Infection with Clonorchis sinensis is associated with an increased risk of__?
View More Questions
Top NEET PG Questions
- A patient hailing from Delhi presents with fever, arthralgia, and extensive petechial rash for 3 days. Lab investigations revealed a hemoglobin of 9 g/ dL, a white blood cell count of 9000 cells/mm3, a platelet count of 20000 cells/mm3, and a prolonged bleeding time. The clotting time was normal. What is the most likely diagnosis?
- Which of the following statements is true about Trichomonas vaginalis?
- A lady from West Rajasthan presented with an ulcer surrounded by erythema on the right leg. Microscopy of the biopsy from the edge of the ulcer showed organisms with dark staining nuclei and kinetoplast. What is the most likely causative agent?
- A child presents with a fever and a rash. Urine examination showed cells with owl's eye appearance. What is the most likely diagnosis?
- Infection with Clonorchis sinensis is associated with an increased risk of__?
View More Questions