TABLE 3.

CSF findings in patients with primary and recurrent HSM and AAM of unknown origin^a

Patient parameter	Reference value	Primary HSMa		Recurrent HSM		AAM
		Mean	Range	Mean	Range	Mean	Range
Age (yr)		36.9**	22-75	41**	22-69	41.1**	17-88
Days with symptoms		2.5**	0-9	1.7**	0-11	3.1**	0-9
Leukocytes (n × 106/liter)	0-5	415**	10-1,600	195**	13-722	286	6-2,240
Monocytes (n × 106/liter)	0-5	368**	10-1,504	190**	13-710	156**	6-940
Protein (g/liter)	<0.50	1.03	0.4-2.60	0.99	0.41-2.96	1	0.2-2.7
Albumin (mg/liter)	<320	648**	250-1,580	434**	200-950	495	104-1,336
Glucose (mmol/liter)	2.2-3.9	3.4	2.4-7	3	2-4	3.7	2.3-6.5
Lactate (mmol/liter)	<3	2.8**	1.3-7.1	2.1**	0.8-3.4	2.2**	0.5-3.5

^aPrimary meningitis was defined as the first-time clinical experience of meningitis. Days with symptoms was defined as the number of days the patient had neurological symptoms before undergoing lumbar puncture. **, values showed statistically significant differences (P < 0.05).