Table 3.

Microbiome comparison

	Benign group (n = 22)	Malignant group (n = 12)	P value
Bacteroides, %, median (range)	4.3 (0-26.1)	5.6 (0-46.4)	0.55
Bifidobacterium, %, median (range)	0 (0-0.5)	0.3 (0-4.5)	< 0.05
Clostridium cluster IV, %, median (range)	2.9 (0-10.8)	3.4 (0-8.8)	0.80
Clostridium cluster IX, %, median (range)	4.7 (0.6-19.5)	4.9 (0-17.8)	0.68
Clostridium cluster XI, %, median (range)	0 (0-0)	0 (0-0)
Clostridium cluster XVIII, %, median (range)	1.3 (0-3.9)	3.6 (0.8-14.9)	0.006
Clostridium subcluster XIVa, %, median (range)	5.1 (0-23.1)	6.4 (2.9-13.7)	0.38
Lactobacillales, %, mean ± SD	63.0 ± 19.7	62.6 ± 18.3	0.95
Prevotella, %, median (range)	2.2 (0-25.9)	0.1 (0-10.9)	0.04
Others, %, median (range)	4.9 (2.5-20.4)	4.1 (1.5-6.3)	0.14