title: [Morphological features of juvenile colon polyps in children].
abstract: Histological, histochemical and immunohistochemical studies of 50 solitary juvenile polyps (JP) and 50 JP from children with juvenile polyposis syndrome (JPS) were performed. Observations of the focal complex glandular structures with high mitotic rate were more frequent in JP from patients with JPS (n = 29, 58%) than in solitary JP (n = 17, 34%) (p < 0.03). The immunohistochemical study demonstrated p53 overexpression in individual cells and more than 50% of Ki-67-positive cells in 5 (10%) solitary JP and in 17(34%) JP from patients with JPS (p < 0.007). The finding of microglandular pattern is more typical for JP from patients with JPS. Pathological data, expression of p53 and Ki-67 by immunohistochemistry could help to pick out the group of JP with dysplastic changes.
authors.affiliation: Russian State Medical University, 117869, Moscow.
authors.forename: A S
authors.initials: AS
authors.lastname: Tertychnyĭ
authors.forename: D M
authors.initials: DM
authors.lastname: Konovalov
authors.forename: A G
authors.initials: AG
authors.lastname: Talalaev
mesh_terms: D011125:Adenomatous Polyposis Coli / Q000235:genetics / Q000473:pathology*; D002467:Cell Nucleus / Q000235:genetics / Q000473:pathology; D002471:Cell Transformation, Neoplastic / Q000235:genetics; D002648:Child; D002675:Child, Preschool; D003111:Colonic Polyps / Q000235:genetics / Q000473:pathology*; D003113:Colonoscopy; D017353:Gene Deletion; D015870:Gene Expression / Q000235:genetics; D006801:Humans; D007150:Immunohistochemistry; D007223:Infant; D019394:Ki-67 Antigen / Q000235:genetics; D016159:Tumor Suppressor Protein p53 / Q000235:genetics
chemical_list: D019394:Ki-67 Antigen; D016159:Tumor Suppressor Protein p53