Mycoplasma Pneumonia: An Unrecognized Cause of Fever of Unknown Origin in an Adult

Table 1

Laboratory findings during admission. ANA: antinuclear antibody, Anti-dsDNA: Anti-Double Stranded DNA, ANCA: antineutrophil cytoplasmic antibody, Ab: antibody, C: complement, RNP: ribonucleoprotein, CCP: anticyclic citrullinated peptide, ENP: extractable nuclear antibodies, RF: rheumatoid Factor, CG: Chlamydia trachomatis, Neisseria gonorrhoeae, CMV: cytomegalovirus, HBsAg: Hepatitis B surface antigen, HCV: Hepatitis C virus. Labs on admission.

Chemistry
Sodium	134 mmol/L
Potassium	4.5 mmol/L
Chloride	99 mmol/L
CO2	21 mmol/L
BUN	8 mg/dL
Creatinine	0.94 mg/dL
Albumin	3.7 g/dL
ALP	72 U/L
AST	20 U/L
ALT	11 U/L
Bilirubin total	0.7 mg/dL
Peripheral blood
WBC	6.3 bil/L
RBC	3.38 bil/L
Hb	10.2 bil/L
Hematocrit	30.6%
MCV	90 fL
MCHC	33 g/dL
RDW SD	41 fL
Platelet	272 bil/L
Neutrophils	4.4 bil/L
CSF studies
Glucose, CSF	67 mg/dL
Protein, CSF	25 mg/dL
Color	Colorless
Clarity	Clear
WBC	1 mcL
RBC	2 mcL
CSF differential	100
RBC	94
PMN	0
Mononuclear cells	6
Immunology
ANA screen	(−)
Anti-dsDNA	(−)
ANCA	(−)
Smith Ab	(−)
RNP Ab	(−)
CCP	(−)
C3	40 mg/dL
	(80–200)
C4	33 mg/dL
	(12–43)
ENP	(−)
HIV-1 RNA quantitation	<20
RF	10 IU/mL
	(0–14)
Microbiology/virology/serology
GC	(−)
CMV DNA quantitation, PCR	(−)
HIV 1/2 Testing algorithm	Nonreactive
HIV-1 RNA	<1.30
HIV-1 RNA quantitation	<20
HBsAG	(−)
HCV	(−)
QuantiFERON TB	(−)
VDRL	Nonreactive
Cultures
Blood	(−)
CSF	(−)
Urine	(−)