Ascending colon adenocarcinoma with tonsillar metastasis: A case report and review of the literature

Table 1 Reported cases of metastatic palatine tonsil tumor from colorectal cancer in the English literature

NO. (Ref)	Gender	Age	Primary site1	Differentiation2	Interval (mo)3	Location	Treatment	Prognosis(mo)
1 (13)	Female	55	R	Well	84	Right	Radiotherapy	nr
2 (14)	Male	53	R	Poorly	24	Right	Tonsillectomy	6 alive
3 (15)	Male	45	R	Poorly and signet-ring	0	Left	Radiotherapy and tonsillectomy	6
4 (16)	Male	36	R	Signet-ring	24	Right	Tonsillectomy	15 alive
5 (17)	Female	81	A	Moderately	0	Left	Tonsillectomy	12
6 (18)	Male	44	A	Signet-ring	0	Left	Radiotherapy	nr
7 (19)	Male	65	T	Poorly	0	Left	Radiotherapy	6
This case	Male	53	A	Moderately	19	Left	Radiotherapy	13 alive

¹A = ascending colon, T = transverse colon, R = rectum, nr = not referred;

²Well = well differentiated adenocarcinoma, moderately=moderately-differentiated adenocarcinoma, poorly = poorly-differentiated adenocarcinoma, Signet-ring = signet-ring cell carcinoma;

³Interval = the time between the diagnosis of colorectal carcinoma and the development of metastatic palatine tonsil tumor.