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Old 06-15-2011
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Question Maltese Cross in a splenectomized patient!

A 60 y/o forest ranger has been experiencing periodic fever and chills, followed by profuse sweating and prostration for the past several days. One year earlier, he had undergone a splenectomy due to an injury he had suffered in an automobile accident. He has never traveled outside the Midwest. His history is remarkable for a recent tick bite. Peripheral blood smear is obtained, which shows intraerythrocytic ring forms and merozoites arranged as a “Maltese cross”. What is the most likely diagnosis?

A. Babesiosis
B. Lyme disease
C. Q fever
D. Malaria
E. Rocky Mountain spotted fever
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Old 06-15-2011
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Default A

A: babesiosis
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Old 06-15-2011
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I agree, A) Babesiosis. Very classic stem
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Old 06-16-2011
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Quote:
Originally Posted by bebix View Post
A 60 y/o forest ranger has been experiencing periodic fever and chills, followed by profuse sweating and prostration for the past several days. One year earlier, he had undergone a splenectomy due to an injury he had suffered in an automobile accident. He has never traveled outside the Midwest. His history is remarkable for a recent tick bite. Peripheral blood smear is obtained, which shows intraerythrocytic ring forms and merozoites arranged as a “Maltese cross”. What is the most likely diagnosis?

A. Babesiosis
B. Lyme disease
C. Q fever
D. Malaria
E. Rocky Mountain spotted fever
I too think A. Babesiosis
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  #5  
Old 06-16-2011
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Correct Answer correct answer

The right answer is Babesiosis

Maltese Cross in a splenectomized patient!-babesia.jpg
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(A) ring-like trophozoite; (B) paired merozoites; (C) maltese-cross (tetrad); (D) various dividing forms; (E) multiple merozoites; (F) appliqué (accolé) form on right border of the erythrocyte; (G) and (H) degenerate (crisis) forms.
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  #6  
Old 06-16-2011
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Question fever

i have a question WHAT is the cause of relapsing fever in babesia and plasmodium infections
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Old 06-16-2011
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i have a question WHAT is the cause of relapsing fever in babesia and plasmodium infections
dormant forms re responsible fr tht
as in plasmodium ovale some sporozoites after entering hepatocytes do not immidiately divide( to change into merozoite form) instead they change into dormant form hypnozoite tht cn persist there for months the same is for babesiosis( its infact incomplete treatment tht leads to relaspses)
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