Endoscopic ultrasound features of autoimmune pancreatitis: The typical findings and chronic pancreatitis changes

doi:10.3748/wjg.v27.i42.7376

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World Journal of Gastroenterology

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1007-9327

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World J Gastroenterol. Nov 14, 2021; 27(42): 7376-7386
Published online Nov 14, 2021. doi: 10.3748/wjg.v27.i42.7376

Table 2 Comparison of endoscopic ultrasound features between the diffuse and focal types of autoimmune pancreatitis patients

EUS findings	*All (n =* 285)**	*Diffuse type (n =* 214)**	*Focal type (n =* 71)**	P value
Typical findings
DHA	213 (74.7)	197 (92.1)	16 (22.5)	< 0.001
FHA	59 (20.7)	0 (0)	59 (83.1)	< 0.001
Bile duct changes
Bile duct wall thickening	195 (68.4)	158 (73.4)	37 (52.1)	0.001
Intrapancreatic bile duct stenosis	165 (57.9)	131 (61.2)	34 (47.9)	0.05
Extrahepatic bile duct dilation	122 (42.8)	97 (45.3)	25 (35.2)	0.14
Peripancreatic changes
Peripancreatic lymphadenopathy	89 (31.2)	72 (33.6)	17 (23.9)	0.13
Peripancreatic hypoechoic margin	81 (28.4)	76 (35.5)	5 (7.0)	< 0.001
Lobular outer margin	40 (14.0)	34 (15.9)	6 (8.5)	0.12
Peripancreatic vessel involvement	21 (7.4)	16 (7.5)	5 (7.0)	0.90
Chronic pancreatitis changes
Parenchymal changes
HF	271 (95.1)	202 (94.4)	69 (97.2)	0.53¹
HS	174 (61.1)	131 (61.2)	43(60.6)	0.92
Cystic lesion	18 (6.3)	14 (6.5)	4 (5.6)	1.00¹
Parenchymal calcification	3 (1.1)	2 (0.9)	1 (1.4)	1.00¹
Lobularity with honeycombing	26 (9.1)	19 (8.9)	7 (9.9)	0.80
Lobularity without honeycombing	48 (16.8)	36 (16.8)	12 (16.9)	0.99
Main pancreatic duct changes
MPD calculi	1 (0.4)	0 (0)	1 (1.4)	0.56¹
MPD dilation	48 (16.8)	30 (14.0)	18 (25.3)	0.03
Diffuse stenosis/irregularity	29 (10.2)	20 (9.3)	9 (12.7)	0.42
Focal stenosis	11 (3.9)	6 (2.8)	5 (7.0)	0.15¹
Hyperechoic duct margin	119 (41.8)	91 (42.5)	28 (39.4)	0.65

¹Fisher’s exact test.

Results presented as n (%). DHA: Diffuse hypoechoic area; EUS: Endoscopic ultrasound; FHA: Focal hypoechoic area; HF: Hyperechoic foci; HS: Hyperechoic strand; MPD: Main pancreatic duct.

Citation: Zhang SY, Feng YL, Zou L, Wu X, Guo T, Jiang QW, Wang Q, Lai YM, Tang SJ, Yang AM. Endoscopic ultrasound features of autoimmune pancreatitis: The typical findings and chronic pancreatitis changes. World J Gastroenterol 2021; 27(42): 7376-7386
URL: https://www.wjgnet.com/1007-9327/full/v27/i42/7376.htm
DOI: https://dx.doi.org/10.3748/wjg.v27.i42.7376