CASE 50
A 42-year-old man presented to a clinic with complaints of 3 weeks of worsening diarrhea, abdominal pain, and fevers. He had noticed an itchy rash over his buttocks and groin area for the past 2 weeks. A 15-lb weight loss was also noted.
LABORATORY STUDIES
Diagnostic Work-Up
Table 50-1 lists the likely causes of illness (differential diagnosis). Stool should be examined for leukocytes. Investigational approach may include
TABLE 50-1 Differential Diagnosis and Rationale for Inclusion (consideration)
Rationale: The unique feature regarding this case is the significant degree of eosinophilia. This limits the differential essentially to parasitic infections. Other etiologies can also be considered if initial work-up is negative, although these would be rare in the presence of eosinophilia. Noninfectious causes may be considered if infection has been ruled out.
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