Repeated USMLE Questions

Repeated USMLE Questions Step 1- 294

A 33-year-old butcher comes to the clinic because he developed eye problems. On taking history, the patient states that he eats raw hamburgers in a regular basis. The physician orders Sabin-Feldman dye test and the results come back positive.

Which is the most likely cause of this patient’s condition?

A- Giardiasis

B- Schistosomiasis

C- Trichinosis

D- Toxoplasmosis

Answer



This is most likely a case of toxoplasmosis, even though all the above-listed conditions have significant clinical and epidemiologic features. Toxoplasmosis is a self-limiting and mild condition that occurs if the patient ingests Toxoplasma oocysts which are found in raw meat. Toxoplasmosis is generally associated with Chorioretinitis, an inflammation of choroid and retina of the eye, thereby making toxoplasmosis the most likely cause of this patient’s condition.

The correct answer is D



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