07-09-2006, 02:05 AM
A previous: healthy 57-year-old man comes to the doc because of a nonpruritic rash ovre both legs for 1 week and a low grade fever 2 days He recent returned
from a 2-week canoe trip on a river in Minnesota. His temperate is 37.2 C (99 F). F-xamin|on shows a 4 x 6cm. macular. dark pink. ovoid lesion on the rt post
hip with central clearing and a punctate eschar near center. There are macular ring lesions with central clearing over medial tibia and ant thighs ofthe lower
extremities. He has no lymphadenopathy Which of the following is the most like: causal organism?
A) borrelai burgdoferi
B) Brucella melitensis
C) francisella tularensis
D) leptospira interoogans
E) rickettsia rickettsii
from a 2-week canoe trip on a river in Minnesota. His temperate is 37.2 C (99 F). F-xamin|on shows a 4 x 6cm. macular. dark pink. ovoid lesion on the rt post
hip with central clearing and a punctate eschar near center. There are macular ring lesions with central clearing over medial tibia and ant thighs ofthe lower
extremities. He has no lymphadenopathy Which of the following is the most like: causal organism?
A) borrelai burgdoferi
B) Brucella melitensis
C) francisella tularensis
D) leptospira interoogans
E) rickettsia rickettsii