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Wuchereria bancrofti (Lymphatic filariasis)

Wuchereria bancrofti (Lymphatic filariasis)


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22 pages

Wuchereria bancrofti (Lymphatic filariasis)

6 flashcards

USMLE® Step 1 style questions USMLE

2 questions

USMLE® Step 2 style questions USMLE

1 questions

A 25-year-old man comes to the office because of progressive swelling and inflammation of his right leg. His medical history is noncontributory. The patient currently resides in a rural area outside of Beijing, China. Upon medical interrogation, the patient denies fever, malaise, or any other accompanying symptoms. His physical exam is notable for significant swelling and non-pitting edema in his right leg. His temperature is 37.5°C (98.6°F), pulse is 102/min, respirations are 16/min, and blood pressure is 120/60 mmHg. A peripheral blood smear is obtained and shown below.

Which of the following is the most likely causal organism of this patient's symptoms? 

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External References
Wuchereria bancrofti is a human parasitic roundworm that is the primary cause of lymphatic filariasis, also known as elephantitis. After transmission, via the bite of the female mosquito, worms invade lymph nodes. This process, which takes nine months to one year to occur, causes inflammation and eventual blockage of lymphatic vessels, leading to characteristic severe lymphatic distention. Treatment is with diethylcarbamazine