Table 1 Clinicopathologic characteristics of the study cases.

CASE	AGE (YRS¹)	CYTO-MORPHOLOGY	TUMOR SIZE (CM)	MITOSES (PER 10 HPF)	PLEOMORPHISM	NECROSIS	LVI	CLINICAL COURSE
1	46	Biphasic	0.9	1	Absent	Absent	Absent	NED at 1 mo
2	41	Mixed	0.6	1	Absent	Absent	Absent	NED at 4 yrs
3	29	Biphasic	0.7	<1	Absent	Absent	Absent	NA
4	55	Epithelioid	4.6	11	Absent	Absent	Absent	NA
5	32	Biphasic	1.5	<1	Absent	Absent	Absent	NED at 20 yrs
6	72	Mixed	1.1	<1	Absent	Absent	Absent	NED at 2 mo
7	49	Spindle cell	0.9	1	Absent	Absent	Absent	NED at 9 yrs
8	59	Spindle cell	1.1	4	Absent	Absent	Absent	NA
9	42	Spindle cell	3.5	3	Absent	Absent	Absent	NED at 6 yrs
10	16	Spindle cell	2.5	2	Absent	Absent	Absent	NA
11	38	Epithelioid	1.1	3	Absent	Absent	Absent	NED at 1 yr
12	21	Epithelioid	9.8	64	Present	Present	Present	DOD at 3 mo
13	5	Epithelioid	2.0	5	Absent	Absent	NA	DR at 4 yrs
14	62	Spindle cell	NA	1	Absent	Absent	Absent	NED at 25 yrs
15	55	Epithelioid	1.1	1	Absent	Absent	Absent	NED at 16 yrs
16	61	Epithelioid	6.5	32	Absent	Present	Present	DOD at 6 mo
17	5	Biphasic	9.1	12	Absent	Absent	Absent	NA
18	68	Epithelioid	5.0	169	Present	Absent	Absent	MD at 9 mo
19	42	Spindle cell	0.7	1	Absent	Absent	Absent	NA
20	43	Biphasic	3.5	4	Absent	Absent	Absent	NED at 4 mo
21	69	Epithelioid	3.7	2	Present	Absent	Absent	MD at 5 mo
22	2 MO	Epithelioid	2.3	3	Absent	Absent	Absent	NA
23	54	Biphasic	3.6	11	Absent	Absent	Absent	NED at 19 mo
24	66	Epithelioid	NA	34	Absent	Present	Present	DR at 9 mo
25	39	Biphasic	3.0	7	Absent	Absent	Absent	NA
26	21	Biphasic	5.8	3	Absent	Absent	Absent	NED at 1 mo

All available clinical and histologic features of the 26 cases are listed, along with any available clinical follow-up. LVI lymphovascular invasion, MO months, NA not available, HPF high-powered fields, NED no evidence of disease, DOD dead of disease, DR disease recurrence, MD metastatic disease, MO months, YRS years. ¹Except case 22 (2 months old).

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