H. capsulatum: A Not-So-Benign Cause of Pericarditis

Table 1

Laboratory evaluation and serologic testing.

WBC	7.4 (3.4–9.4 K/mm^3)
Neut	64% (47–67%)
Lymph	21% (25–45%)
Mono	12% (1–9%)
Eos	2% (0–6%)
ESR	25 (0–20 mm/hr)
Blood cultures	Negative
Serum calcium	9 (8.5–10.5 mg/dl)
BUN	14 (6–22 mg/dl)
Serum creatinine	0.9 (0.7–1.4 mg/dl)
Histoplasma yeast Ab	<1 : 8 (normal < 1 : 8)
Histoplasma mycelial Ab	<1 : 8 (normal < 1 : 8)
Histoplasma IF	Positive (M band)
Blastomyces Ab	<1 : 8 (normal < 1 : 8)
Blastomyces IF	Negative
Coccidioides Ab	<1 : 2 (<1 : 2)
Coccidioides IF	Negative
Aspergillus IF	Negative
Angiotensin-converting enzyme	12 (9–67)
HIV 1 & 2 Ab	Nonreactive
QuantiFERON-TB	Negative

ESR: erythrocyte sedimentation rate; BUN: blood urea nitrogen; Ab: antibody; IF: immunodiffusion.