Pancreatic volume change using three dimensional-computed tomography volumetry and its relationships with diabetes on long-term follow-up in autoimmune pancreatitis

Table 2 Clinical characteristics of patients with type-1 autoimmune pancreatitis in relation to diffuse or mass-forming type

Variable	All, n = 33	D-type, n = 16	M-type, n = 17	P valuea
Male:Female	24:09	12:04	12:05	1.00
Age at initial CT in years	63.1 ± 11.1 (65.0, 37-85)	64.6 ± 11.0 (65.0, 51-80)	61.6 ± 11.3 (64.5, 37-79)	0.66
Pancreatic re-enlargement	12 (36.4)	7 (43.8)	5 (29.4)	0.48
Mean time to first re-enlargement in months	42.5 ± 27.9 (37.5, 7-93)	50.7 ± 34.0 (52.0, 7-93)	31.0 ± 11.5 (30.0, 18-47)	0.33
Extrapancreatic lesions	9 (27.3)	9 (56.3)	0 (0.0)	< 0.001

Data presented as mean ± standard deviation (median and range) or number (percentage).

^aP values between diffuse and mass-forming types. CT: Computed tomography; D-type: Diffuse type; M-type: Mass-forming type.