A boy with leukemia screams whenever he needs to be turned or moved. The most probable cause of this pain is:
a. Edema. c. Petechial hemorrhages.
b. Bone involvement. d. Changes within the muscles.
ANS: B
The invasion of the bone marrow with leukemic cells gradually causes a weakening of the bone and a tendency toward fractures. As leukemic cells invade the periosteum, increasing pressure causes severe pain. Edema, petechial hemorrhages, and muscular changes would not cause severe pain.
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