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.

Table 2 The number of abnormal shape and giant silver-stained nucleolar organizing regions in died and survived groups (x^-± s/100 nuclei)

Group	n	Abnormal shape AgNOR	Giant AgNOR
Survived	30	56.57 ± 19.671	23.77 ± 14.892
Died	27	67.00 ± 24.12	31.37 ± 16.15

¹t = 1.7968, P = 0.08;

²t = 1.8494, P = 0.0698 vs died group. AgNOR: Silver-stained nucleolar organizing regions.

Table 3 The size of silver-stained nucleolar organizing regions in died and survived groups (x^-± s/100 nuclei)

Group	n	0 μm	1 μm	2 μm
Survived	30	398.30 ± 225.36	158.87 ± 75.74	71.67 ± 27.01
Died	27	661.70 ± 250.523	128.00 ± 72.651	85.89 ± 20.702

¹t = 1.6347, P = 0.1078;

²t = 2.0958, P = 0.0407;

³t = 4.1973, P = 0.0001 vs survived group.