UKMLA PLAB AMC USMLE Prometric MCQ

Question Number 0525

Question:
A 57 year old man complains of fatigue and weakness. On physical examination, he is found to have a low grade fever, splenomegaly and mild hepatomegaly. He is found to be anemic and thrombocytopenic. His white blood count is 4,000/cu mm. His blood smear shows an unusual cell with cytoplasm projections. These cells are positive for acid phosphatase and resistant to tartaric acid. No Auer rods are visualized. He is negative for Philadelphia chromosome. Which of the following is most likely?

a) Burkitt lymphoma
b) acute lymphoblastic leukemia
c) mycosis fungoides
d) hairy cell leukemia
e) acute myelogenous leukemia