title: [Clinico-morphological peculiarities of thyroid cancer among children exposed to the Chernobyl disaster radiation].
abstract: The paper deals with a comparison of clinico-morphological patterns of sporadic thyroid cancer and that in pediatric patients exposed to radiation during the Chernobyl disaster. The latter are highly prone to both local and regional metastatic spread to the lymph nodes (intrathyroid distribution--61%; extension through capsule--42%, and metastases to the neck lymph nodes--66%). However, these data do not differ significantly from those for intact areas. Yet, cancer occurs in exposed cohorts at an earlier stage: its incidence at age 4-6 is 2-3.5 higher and that of relapse such as presentation of latent metastases to the lymph nodes and tumor foci development in residual tumor tissue is 1.6 times the average. Also, morphological patterns have changed: typical papillary cancer incidence has dropped by half while the diffuse follicular variety has grown 1.8-fold.
authors.forename: I N
authors.initials: IN
authors.lastname: Iakovleva
authors.forename: R V
authors.initials: RV
authors.lastname: Shishkov
authors.forename: V G
authors.initials: VG
authors.lastname: Poliakov
authors.forename: P A
authors.initials: PA
authors.lastname: Pankova
mesh_terms: D000293:Adolescent; D047852:Chernobyl Nuclear Accident; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D009362:Neoplasm Metastasis; D009381:Neoplasms, Radiation-Induced / Q000473:pathology*; D012189:Retrospective Studies; D013964:Thyroid Neoplasms / Q000473:pathology*