Prognostic value of silver-stained nucleolar organizer regions in colorectal carcinoma

Table 1 The number of silver-stained nucleolar organizing regions in the died and survived groups with different histologic types of colonic cancer x^-± s (range)

Histologic types	AgNOR numbers/nucleus
	n	Survived group	n	Died group
Tubular adenoma
highly differentiated	7	4.64 ± 0.23	8	6.26 ± 0.72
		4.17-4.85		5.60-7.38
moderately differentiated	11	5.94 ± 0.92	7	8.44 ± 0.84
		4.33-7.10		7.47-9.55
low differentiated	4	7.65 ± 0.74	6	11.23 ± 0.74
		6.72-8.37		10.89-12.71
Mucous adenoma	5	6.33 ± 0.66	3	7.75 ± 0.39
		5.70-7.29		7.42-7.94
Other types1	3	9.64 ± 3.51	3	12.20 ± 0.39
		6.02-11.02		11.88-12.63
Total2	30	6.29 ± 1.83	27	8.76 ± 2.29
		4.17-11.02		5.60-12.63

¹Survived group: One undifferentiated adenoma, one polypous adenoma, and one signet-ring cell adenoma. Died group: Two undifferentiated adenomas and one signet-ring cell adenoma.

²t = 4.5115, P = 0.00, between two groups. AgNOR: Silver-stained nucleolar organizing regions.