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

Cancer Imaging

Table 2 MR appearances of PHNET

Pathological grade	Cases	Lesion		Location		Unenhanced MRI			Post-enhanced MRI				ADC value
		Single	Multiple	Right lobe	Left lobe	T1WI	T2WI		Enhancement		Type of dynamic curves^a		ADC value
		Single	Multiple	Right lobe	Left lobe	Hypointensse	Mildly hyper-intensity	Markedly hyper-intense	Marked	Mild	Type II	Type III
G1	7	7	0	6	1	7	5	1	6	1	1	6	1.39 ± 0.20
G2	8	6	2	5	1	8	7	1	8	0	0	8	1.26 ± 0.23
G3	9	4	5	2	2	9	3	6	9	0	0	9	1.14 ± 0.17

^aType 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