PMID- 2332519 OWN - NLM STAT- MEDLINE DCOM- 19900606 LR - 20190501 IS - 0021-9746 (Print) IS - 1472-4146 (Electronic) IS - 0021-9746 (Linking) VI - 43 IP - 3 DP - 1990 Mar TI - Role of nucleolar organiser regions in differentiating malignant from benign tumours of the colon. PG - 235-8 AB - An argyrophilic technique (AgNOR) was applied to paraffin wax sections of 12 tubular adenomas, 17 villous adenomas with moderate and severe atypia, and 21 colonic adenocarcinomas. The range of the mean number of nucleolar organiser regions (NORS) per nucleus was 1.54-3.28 (99% CI 2.29-3.04) for tubular adenomas 3.07-4.36 (2.98-4.43), and 3.60-5.02 (3.74-4.69) for villous adenomas with moderate and severe atypia, respectively, and 5.53-9.33 (6.15-8.54) for highly differentiated adenocarcinomas. The number of AgNORs permitted differentiation among the three groups. The differences observed were significant. Malignant tumour cells were characterised by a large number of AgNORs which were small in size and showed a scattered distribution. Nuclei of tubular adenoma and villous adenoma with moderate atypia had only a small number of large sized AgNORs in a clustered distribution. It is suggested that this method distinguishes malignant epithelial cells from benign cells of colon, even those with severe atypia, and that it is a useful adjunct to diagnostic histopathology. FAU - Yang, P AU - Yang P AD - Department of Pathology, Fourth Military Medical University, People's Republic of China. FAU - Huang, G S AU - Huang GS FAU - Zhu, X S AU - Zhu XS LA - eng PT - Journal Article PL - England TA - J Clin Pathol JT - Journal of clinical pathology JID - 0376601 SB - IM MH - Adenocarcinoma/pathology MH - Adenoma/pathology MH - Colonic Neoplasms/diagnosis/*pathology MH - Diagnosis, Differential MH - Humans MH - Nucleolus Organizer Region/*pathology PMC - PMC502337 EDAT- 1990/03/01 00:00 MHDA- 1990/03/01 00:01 PMCR- 1993/03/01 CRDT- 1990/03/01 00:00 PHST- 1990/03/01 00:00 [pubmed] PHST- 1990/03/01 00:01 [medline] PHST- 1990/03/01 00:00 [entrez] PHST- 1993/03/01 00:00 [pmc-release] AID - 10.1136/jcp.43.3.235 [doi] PST - ppublish SO - J Clin Pathol. 1990 Mar;43(3):235-8. doi: 10.1136/jcp.43.3.235.