Table 1. Clinical characteristics of patients.

Patient	Age/Gender	IgG4 (mg/dl)	C3/C4 (mg/dl)	CH50	Involvement of organs
1	69/M	768	49/2	<5	Kidney, Pancreas, LN
2	77/F	1160	20/1	<5	Submandibular gland, LN, Lung
3	62/M	1160	59/3	<12	LN, Retroperitoneal fibrosis
4	50/M	2630	37/1	N.D.	LN
5	65/M	297	35/1	<12	Kidney, Pancreas, Sclerosing cholangitis
6	60/M	670	21/2	<12	Kidney, Submandibular gland, LN
7	64/F	1020	22/0.7	7	Kidney
8	60/M	480	120/38	64.8	Pancreas
9	48/F	108	105/34	40.5	Pancreas
10	64/M	945	107/18	41	Submandibular gland, Retroperitoneal fibrosis, Kidney
11	72/M	289	82/18	35	Lung
12	53/M	1040	131/42	54	Submandibular gland, LN, Lung, Kidney

M, male; F, female; N.D., not done; LN, lymph node