Table 2.

Volatile Organic Compounds in our Study Cohort

Volatile organic compounds	Cholangiocarcinoma Median (Interquartile range), ppb	Primary Sclerosing Cholangitis Median (Interquartile range), ppb	P value
2-propanol	95.3(27.2–169.9)	346(102.8–1550)	0.034
Acetaldehyde	32.8(21.3–249.4)	223.8(71–921)	0.037
Acetone	343.2(207.5–871.9)	862.3(519.1–1990)	0.07
Acetonitrile	14.3(5.6–154.8)	109(18.1–470)	0.025
Acrylonitrile	0.6(0.5–0.9)	1.12(0.6–2.43)	0.017
Benzene	2.6(1.2–25.3)	10.9(3.2–223)	0.02
carbon disulfide	3.4(1.1–74.8)	18.1(6.7–282)	0.025
dimethyl sulfide	2.2(0.7–26)	38.1(2.8–120)	0.016
Ethanol	177.3(50.3–224.4)	299(183.4–501)	0.016
Isoprene	1.7(0.9–6.0)	5.4(1.8–18)	0.07
Pentane	20.3(10.5–123.9)	62.1(26.5–213)	0.07
1-decene	3.8(1.8–5.4)	3.9(0.07–5.1)	0.55
1-heptene	9.6(3.23–13.1)	6.3(0.09–19.3)	0.84
1-nonene	2.5(1.9–5.3)	5.3(2.4–8.8)	0.12
1-octene	10.2(4.1–13)	10(0.5–13.8)	0.98
3-methylhexane	14.8(6–23.6)	18.9(1.7–33.1)	0.49
(E)-2-nonene	4.6(2.1–126.3)	55.5(5.1–1620)	0.049
Ammonia	62.9(56.7–128.9)	90.4(63.6–145)	0.49
Ethane	89.5(67.6–116)	105.5(97.9–133)	0.08
hydrogen sulfide	0.4(0.3–0.5)	0.3(0.3–0.5)	0.87
triethyl amine	0.9(0.7–1.6)	2(0.9–9.8)	0.04
trimethyl amine	12.4(10.1–42)	35.2(13.6–69.7)	0.1