Liver metastasis from hepatoid adenocarcinoma of the stomach mimicking hepatocellular carcinoma: Dynamic computed tomography findings

Table 1 Clinical features of hepatoid adenocarcinoma of the stomach

Case No.	Sex/age (yr)	Initial presentation	Location(largest size, cm)	Metastasis	Serum AFP(ng/mL)	Treatment	Follow-up status
1	M/64	Epigastric discomfort	Body, antrum (7.5)	Liver	1133.7	Gastrectomy	Died at 19 mo
				Peritoneum		Chemotherapy
				Perigastric lymph nodes		TACE for liver metastases
2	M/69	Body weight loss	Antrum (7.3)	Liver	281.1	Gastrectomy	Died at 3 mo
				Lung		Chemotherapy
3	M/78	Epigastric discomfort	Antrum (4.5)	Liver	3124.9	Gastrectomy	Died at 5 mo
				Perigastric lymph nodes		Chemotherapy
4	M/63	Epigastric discomfort	Cardia (5.2)	Liver	2170.3	Chemotherapy	Died at 6 mo
				Peritoneum		TACE for liver metastases
				Perigastric lymph nodes
5	F/70	Palpable mass	Body, antrum (3.8)	Liver	890.3	Chemotherapy	Died at 23 mo
				Perigastric lymph nodes		TACE for liver metastases
6	F/69	Epigastric discomfort	Body, antrum (7.5)	Liver	6442.6	Chemotherapy	Died at 9 mo
				Perigastric lymph nodes
7	M/60	Epigastric discomfort	Antrum (4.5)	Liver	1419.7	Chemotherapy	Died at 3 mo
				Peritoneum
				Paraaortic lymph nodes
				Perigastric lymph nodes
8	M/75	Body weight loss	Body (4.0)	Liver	2904.5	Supportive care	Died at 3 mo
				Lung
				Peritoneum
				Perigastric lymph nodes

M: Male; F: Female; AFP: Alpha-fetoprotein; TACE: Transarterial chemoembolization.

Table 2 Computed tomography features of liver metastases from hepatoid adenocarcinoma of the stomach

Case No.	Tumor location	Tumor number(largest size, cm)	Necrosis	Hemorrhage	Venous tumor thrombus	Dynamic enhancing pattern
1	Lateral segment	Single (9.7)	Yes	No	Left portal vein	Arterial hyperattenuation
					Left hepatic vein	Late phase washout
					Inferior vena cava
2	Bilateral lobes	Multiple (8.7)	Yes	Yes	Right portal vein	Arterial hyperattenuation
					Left hepatic vein	Late phase washout
					Inferior vena cava
3	Segment 7	Single (2.1)	Yes	No	Right portal vein	NA
4	Right lobe	Multiple (2.8)	Yes	No	Right portal vein	Arterial hyperattenuation
					Left portal vein1	Late phase washout
5	Segment 4	Single (7.2)	Yes	No	nil	Arterial hyperattenuation
						Late phase washout
6	Right lobe	Multiple (9.8)	Yes	Yes	Right portal vein	Arterial hyperattenuation
					Left portal vein1	Late phase washout
					Gastroepiploitc vein2
7	Bilateral lobes	Multiple (7.5)	Yes	Yes	Right portal vein	Arterial hyperattenuation
					Left hepatic vein	Late phase washout
8	Bilateral lobes	Multiple (8.1)	Yes	Yes	Left portal vein	NA

¹Isolated portal vein tumor thrombosis;

²By direct invasion of primary hepatoid adenocarcinoma of the stomach. NA: Not available.