SciELO - Scientific Electronic Library Online

 
vol.141 issue4Vitamin D nutrition in Chilean pre-school children living in extreme latitudesPercutaneous CT-guided cutting needle biopsy of pulmonary lesions: Retrospective analysis of 153 procedures author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand

Journal

Article

Indicators

Related links

Share


Revista médica de Chile

Print version ISSN 0034-9887

Abstract

MOSSO, Lorena et al. From macro to micro thyroid carcinoma: records of a clinical hospital from 1991 to 2010. Rev. méd. Chile [online]. 2013, vol.141, n.4, pp.442-448. ISSN 0034-9887.  http://dx.doi.org/10.4067/S0034-98872013000400004.

Background: The prevalence of thyroid cancer has increased, particularly in nodules smaller than 10 mm, probably due to the growing use of routine thyroid ultrasound. There is controversy about the biological behavior of micro carcinomas and the relevance of their early detection. Aim: To characterize the clinical presentation of thyroid cancer over 20 years in an University medical center and to evaluate the differences between macro and micro carcinomas. Patients and Methods: We reviewed 1547 surgical biopsy records of thyroid cancer in our institution obtained between 1991 and 2010. Results: We observed a sustained increase in the rate of thyroidectomies for thyroid cancer (per 1000 surgical procedures) in the study period. Papillary, follicular, mixed, medullary and anaplastic carcinomas were observed in 95, 3, 2, 0.5 and 0.1% of biopsies, respectively. The incidence of tumors of less than 10 mm (micro carcinoma) also increased. Those findings were associated with a significant decrease in tumor aggressiveness, determined by a low frequency of surgical margin involvement of thyroid capsule, perithyroid tissue invasion, vascular permeation and lymph node metastases. Conclusions: The increased prevalence of thyroid cancer, especially of micro carcinomas, may reflect the greater use of diagnostic ultrasound or represent a real change in the biological behavior of this disease and our data suggest that further studies are needed to know the impact of early treatment in the outcome of those patients because of the real less histologic agressiveness of micro carcinomas.

Keywords : Papillary thyroid microcarcinoma; Thyroid neoplasms; Thyroid nodule.

        · text in Spanish     · Spanish ( pdf )

 

Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License