Epithelioid angiomyolipoma of the liver: Cross-sectional imaging findings of 10 immunohistochemically-verified cases

Table 1 Synopsis of demographics and imaging findings in 10 patients with Epi-HAML

No.	Age (yr)/sex	Size (cm), segment	Unenhanced CT/MR	Fat	Vascularity	Outer rim	Vessels in lesion
1	51/F	6.5, 4.0 VI/VII, IV	Hypo	No	Hypovascular	Yes	Yes
2	42/F	4.2, I	Hypo	No	Hypovascular	No	No
3	35/F	7.5, VI	Hypo	No	Hypervascular	No	Yes
4	36/F	1.5, IV	Hypo	No	Hypervascular	Yes	Yes
5	17/F	10.0, V/VII/VIII	Hypo	No	Hypervascular	Yes	Yes
6	55/F	5.0, II/III	Hypo	No	Hypervascular	Yes	Yes
71	33/F	6.0, 1.0, II/III/IV, VII	Hypo	Yes	Hypervascular	No	Yes
8	36/F	3.0, IV	Hypo	No	Hypervascular	Yes	Yes
9	46/F	4.0, II/III	T1 hypo, T2 hyper	No	Hypervascular	Yes	Yes
10	47/F	2.5, VI	T1 hypo, T2 hyper	No	Hypervascular	Yes	Yes

¹The demonstration of hypervascularity and vessels with lesion were only for one lesion (large) of No. 7 patient. Hyper: Hyperattenuation; Hypo: Hypoattenuation; T1 hypo: Hypointense on T1WI (fat suppression); T2 hyper: Hyperintense on T2WI.

Table 2 Synopsis of demographics and imaging findings in 11 patients with non-Epi-HAML

No.	Age (yr)/sex	Size (cm), segment	Unenhanced CT/MR	Fat	Vascularity	Outer rim	Vessels in lesion
1	45/F	6.0, VI/VII	Hypo	Yes	Hypervascular	No	No
2	34/F	4.5, II/III	Hypo	No	Hypervascular	No	Yes
3	37/F	5.5, VIII/IV	T1 hypo, T2 hyper	Yes	Hypervascular	Yes	Yes
4	40/F	12.0, VII/VIII/IV	T1 hypo, T2 hyper	Yes	Hypervascular	Yes	Yes
		2.0, 1.0, II/III
5	50/F	6.5, IV	T1 hypo, T2 hyper	Yes	Hypervascular	Yes	Yes
6	43/M	2.0, VI	Hypo	Yes	Hypervascular	No	No
7	47/M	2.0, IV	Hypo	Yes	Hypervascular	No	No
8	46/M	3.0, VIII	Hypo	Yes	Hypervascular	No	Yes
9	44/F	4.0, II	Hypo	No	Hypervascular	No	No
10	50/F	3.0, VI	Hypo	Yes	Hypervascular	No	Yes
11	21/F	12.0, VI/VI	T1 hypo, T2 hyper	No	Hypervascular	Yes	Yes

Table 3 Comparison of imaging features between Epi-HAML and non-Epi-HAML¹

	Epi-HAML, n = 12 (10)	Non-Epi-HAML, n = 13 (11)	P value
Fat	2 (1)	10 (8)	0.005
Hypervascular	8 (8)	13 (11)	0.082
Vessels in lesions	10 (9)	9 (7)	0.645
Outer rim	8 (7)	6 (4)	0.428

¹Data without parentheses are the number of lesions and data in parentheses are the number of patients. The Fisher exact test was used to analyze difference in per-lesion probability of imaging features between two types.