Primary hepatic neuroendocrine tumors: comparing CT and MRI features with pathology

Cancer Imaging

Table 1 CT appearance of PHNET

Pathological grade	Case	Lesion		Location		Unenhanced CT				Contrast-enhanced series (attenuation)						Type of dynamic enhanced curves^b
		Single	Multiple	Right	Left	Hypo	Hyper	Homogeneity		Arterial phase^a		Portal phase^a		Delayed phase^a		Type II	Type III
								Yes	No	Markedly hyper	Moderately hyper	Hyper	Iso	Hyper	Iso	Type II	Type III
G1	8	8	0	7	1	7	1	6	2	7	1	8	0	8	0	1	7
G2	10	7	3	6	1	10	0	4	6	8	2	8	2	9	1	1	9
G3	11	4	7	2	2	10	1	0	11	9	2	11	0	9	2	1	11

^aIf the tumor showed a cystic or predominantly cystic appearance, the attenuation of contrast-enhanced series on arterial phase, portal phase and delayed phase were measured in the margin region. The type of dynamic enhanced curves were obtained from the margin or solid content
^bType I dynamic enhancement curves show lesions with gradual enhancements and peak enhancements in the delayed phase. Type II dynamic enhancement curves show lesions with peak enhancements at the arterial phase and no decrease at the portal phase or delayed phase. Type III curves shows lesions with peak enhancements at the arterial phase and a slight decrease at the portal phase and the delayed phase

ISSN: 1470-7330