Questions for Discussion:

1. What is your preliminary diagnosis and what should be done with Mr. Howard? Answer
2. Screening laboratory tests return within normal limits.   What further examinations or testing should be performed? Answer
3. You decide to order an emergency CT scan.   The CT scan cannot be obtained after 5 p.m. without the permission of the staff radiologist.   Should you call the radiologist to obtain the scan that night?   How would you justify this request? Answer

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