Evidence for colorectal sarcomatoid carcinoma arising from tubulovillous adenoma

Table 1 Antibodies used for histological evaluation of the tumor, and a summary of the results

Antibody	Concentration	Company	Result
Smooth muscle actin (SMA)	1:2	Dako	Negative
S100	1:1000	Zymed	Negative
Bcl-2	1:60	Dako	Negative
CD34	1:30	Becton Dickinson	Negative
PDGFA-α	1:120	Santa Cruz Biotechnology	Non-contributory
Smooth muscle myosin (SMMS)	1:100	Dako	Negative
CD117	1:150	Dako	Negative
Desmin	1:100	Dako	Negative
Vimentin	1:100	Dako	Negative
p53	1:100	Dako	Positive
Pancytokeratin	1:100	Zymed AE1/AE3	Patchy positive
		Becton Dickinson Cam 5.2

Table 2 Summary of demographics and outcome of cases reported in the English literature with the diagnosis of colorectal sarcomatoid carcinoma

Case	Author, yr	Age (yr)	Sex	Site	Distant metastasis	Outcome
1	Weidner, 1986	73	M	Sigmoid	On follow up	4 yr, DOD
2	Chetty, 1993	72	F	Cecum	On initial visit	3 mo, DOD
3	Roncaroli, 1995	71	F	Rectum	On follow up	6 mo, DOD
4	Isimbaldi, 1996	86	F	Ascending colon	None	2 yr, disease free
5	Shoji, 1998	78	M	Descending colon	None	16 mo, disease free
6	Takeyoshi, 2000	82	M	Rectum	On follow up	6 mo, DOD
7	Kim, 2001	41	F	Sigmoid	On follow up	4 mo, DOD
8	Di Vizio, 2001	56	F	Descending colon	On follow up	21 mo, DOD
9	Kim, 2005	71	M	Ascending colon	On initial visit	Unspecified
10	Present case	52	F	Rectum	None	8 mo, disease free

DOD: Died of disease.