Portal vein thrombosis: Prevalence, patient characteristics and lifetime risk: A population study based on 23 796 consecutive autopsies

Table 1 Prevalence in patients with portal vein thrombosis (PVT) of conditions known to be major causes: Age- and gender distribution within categories

Patient category	n (%) ofPVT patients	n (%) withinrisk category	Age (yr)Median	Mean (95% CI)	Femalegender (%)
Cirrhosis 1	72 (28)		70	68.5 (65.8 - 71.3)	28 (39)
with primary hepatic cancer		26 (36)
without primary hepatic cancer		46 (64)
Primary hepatobiliary cancer 1	59 (23)		72	72.1 (69.4 - 74.8)	26 (44)
hepatic carcinoma 2		38 (64)
extrahepatic biliary/gall bladder carcinoma		21 (36)
Secondary malignancy of the hepatobiliary region 1	111 (44)		70	69.0 (66.7 - 71.2)	59 (52)
from pancreatic carcinoma		47 (42)
gastric carcinoma		20 (18)
colorectal carcinoma		11 (10)
lung cancer		7 (6)
malignant lymphoma		5 (4)
mammary adenocarcinoma		4 (4)
other primary cancer 3		17 (15)1
Myeloproliferative disorders 1	7 (3)		72	65.4 (44.2 - 86.6)	5 (71)
Major abdominal infection / inflammation 14	25 (10)		73	71.9 (66.5 - 77.3)	15 (60)
No cause identified	36 (14)		73	70.8 (65.9 - 75.7)	21 (57)
All patients with PVT	254 (100)		72	69.9 (68.3 - 71.4)	129 (51)

¹ categories not mutually exclusive.

² hepatocellular carcinoma (26), intrahepatic cholangiocarcinoma (6), mixed (4), anaplastic (1) and unspecified (1) carcinoma.

³ malignant melanoma (3), female genital tract cancer (3), uroepithelial cancer (2), urinary bladder carcinoma (2), prostatic carcinoma (2), oesophageal cancer (1), duodenal cancer (1), renal cancer (1), adrenal cancer (1), sarcoma (1).

⁴ liver abscess (13), peritonitis (8), acute necrotising pancreatitis (4), abdominal abscess (2), ulcerative colitis (1) (more than one alternative possible).