Table 2. Characteristics of the 20 patients with CRS.

No.	Agea/genderb	Microorganisms isolated from maxillary and ethmoid sinusesc	Total No. of isolate	Biofilmd
1	61/f	P. aeruginosa	1	+
2	45/f	S. epidermidis	1	–
3	58/f	S. epidermidis, Acinetobacter lwoffii	2	+
4	63/m	Enterobacter sp., Neisseria sicca, Corynebacterium hoffmannii, Streptococcus viridians	4	+
5	44/m	S. epidermidis, K. pneumoniae	2	+
6	78/m	Escherichia coli	1	+
7	64/f	NG	-	+
8	81/m	Alcaligenes faecalis	1	+
9	67/m	NG	-	+
10	54/m	NG	-	+
11	54/f	NG	-	–
12	37/f	NG	-	+
13	59/f	Haemophilus influenzae	1	–
14	13/f	NG	-	+
15	59/m	NG	-	+
16	27/m	A. lowffii	1	+
17	60/f	NG	-	–
18	39/m	Enterobacter sp., H. influenzae	2	+
19	48/m	NG	-	+
20	52/f	NG	-	–

^aIn years.

^bm, male; f, female.

^cNG, No growth.

^d(+), positive; (–), negative.