Table 1. Comparison of clinical features between iMCD and IgG4-RD.

	iMCD (n=22)	IgG4-RD (n=26)	p-value
Age
Mean ± SD (years)	53 ± 13	69 ± 10	<0.001
<50 years (n, %)	8 (36%)	2 (8%)	0.029
Gender (male %)	45%	73%	0.077
Organ involvement
Nodal	5 (23%)	0	0.015
Mixed nodal and extranodal	14 (63%)	14 (54%)	0.565
Extranodal	3 (14%)	12 (46%)	0.027
Affected organs (n, %)
Lymph nodes	19 (86%)	14 (54%)	0.027
Lungs	15 (68%)	18 (69%)	1.000
Spleen (splenomegaly)	7 (32%)	0	0.002
Liver (hepatomegaly)	3 (14%)	0	0.089
Kidney	2 (9%)	8 (31%)	0.085
Ureter/renal pelvis	1 (5%)	2 (8%)	1.000
Retroperitoneum	1 (5%)	3 (12%)	0.614
Paravertebral mass	1 (5%)	1 (4%)	1.000
Prostate	0	1 (4%)	1.000
Pericardium	0	2 (8%)	0.493
Aorta (periaortitis)	0	3 (12%)	0.239
Bile duct	0	5 (19%)	0.054
Pancreas	0	12 (46%)	<0.001
Salivary/lacrimal glands	0	14 (54%)	<0.001

SD, standard deviation.