Pancreatic neuroendocrine neoplasms: Magnetic resonance imaging features according to grade and stage

Table 4 Qualitative image analysis and comparison between grades and stages

	Grades				ENETS TNM stages1
	Total	G1	G2-3	P value	Total	I/II	III/IV	P value
Size (mm)	28.7 ± 20.8	22.7 ± 17.7	36.4 ± 22.1	0.017	29.9 ± 21.1	24.6 ± 19	34.9 ± 22.1	0.080
MPD caliber2 (mm)	6 ± 2	6.8 ± 2.7	5.4 ± 1	0.256	6 ± 2	7.7 ± 2.9	5.3 ± 0.9	0.038
CBD caliber3 (mm)	13.4 ± 3.9	18.3 ± 3	11.5 ± 2	0.151	13.4 ± 3.9	20.5	12.3 ± 2.6	0.034
ADCL (× 10-3 mm2/s)	1.29 ± 0.47	1.45 ± 0.53	1.09 ± 0.28	0.003	1.31 ± 0.48	1.53 ± 0.55	1.10 ± 0.25	0.001

Data are expressed as means ± SD.

¹Four lesions have been excluded from this analysis (minimally invasive surgery without lymphadenectomy);

²Pancreatic head/body lesions showing upstream MPD dilation;

³Pancreatic head lesions showing upstream CBD dilation. ENETS: European Neuroendocrine Society; TNM: Tumor-nodes-metastases.