title: DNA ploidy in papillary carcinoma of the thyroid gland in children and adolescents.
abstract: OBJECTIVE
  To evaluate DNA ploidy in papillary thyroid carcinoma in children in correlation to the clinical course of the disease.
  
  
  METHODS
  Flow cytometric DNA ploidy measurements were performed on formalin-fixed, paraffin-embedded tumor specimens from 14 children and 14 adult patients with papillary carcinoma of the thyroid gland. Analysis of DNA content was performed blind to patient's age and clinical presentation.
  
  
  RESULTS
  Seven patients presented with cervical metastasis, one patient had distal metastasis and four patients had local invasion. All patients underwent total thyroidectomy. Seven children underwent bilateral modified neck dissection. Twenty-five tumors expressed diploid DNA content. No statistically significant difference in DNA content was observed between the tumors from child and adult patients. No correlation was found between DNA content and aggressive presentation in the pediatric group.
  
  
  CONCLUSIONS
  Our primary results indicate that diploid DNA content is common in papillary thyroid carcinoma in children and aggressive clinical presentation is not associated with DNA aneuploidy. Larger prospective studies and long-term clinical follow-up is warranted to document the clinical significance of these observations.
authors: Department of Otolaryngology, Head and Neck Surgery, Rabin Medical Center, Petah Tiqva, Israel.
authors: Y
authors: Y
authors: Stern
authors: K
authors: K
authors: Segal
authors: O
authors: O
authors: Medalia
authors: R
authors: R
authors: Feinmesser
mesh_terms: D000293:Adolescent; D000328:Adult; D000782:Aneuploidy; D002291:Carcinoma, Papillary / Q000235:genetics* / Q000556:secondary; D002648:Child; D004273:DNA, Neoplasm / Q000235:genetics*; D004171:Diploidy; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D013964:Thyroid Neoplasms / Q000235:genetics*
chemical_list: D004273:DNA, Neoplasm