Papillary thyroid microcarcinoma: characteristics at presentation, and evaluation of clinical and histological features associated with a worse prognosis in a Latin American cohort
Arch. endocrinol. metab. (Online)
;
62(1): 6-13, Jan.-Feb. 2018. tab
Article
Dans Anglais
| LILACS
| ID: biblio-887624
ABSTRACT
ABSTRACT Objective We aimed to describe the presentation of papillary microcarcinoma (PTMC) and identify the clinical and histological features associated with persistence/recurrence in a Latin American cohort. Subjects and methods Retrospective study of PTMC patients who underwent total thyroidectomy, with or without radioactive iodine (RAI), and who were followed for at least 2 years. Risk of recurrence was estimated with ATA 2009 and 2015 classifications, and risk of mortality with 7th and 8th AJCC/TNM systems. Clinical data obtained during follow-up were used to detect structural and biochemical persistence/recurrence. Results We included 209 patients, predominantly female (90%), 44.5 ± 12.6 years old, 183 (88%) received RAI (90.4 ± 44.2 mCi), followed-up for a median of 4.4 years (range 2.0-7.8). The 7th and 8th AJCC/TNM system classified 89% and 95.2% of the patients as stage I, respectively. ATA 2009 and ATA 2015 classified 70.8% and 78.5% of the patients as low risk, respectively. Fifteen (7%) patients had persistence/recurrence during follow-up. In multivariate analysis, only lymph node metastasis was associated with persistence/recurrence (coefficient beta 4.0, p = 0.016; 95% CI 1.3-12.9). There were no PTMC related deaths. Conclusions Our series found no mortality and low rate of persistence/recurrence associated with PTMC. Lymph node metastasis was the only feature associated with recurrence in multivariate analysis. The updated ATA 2015 and 8th AJCC/TNM systems classified more PTMCs than previous classifications as low risk of recurrence and mortality, respectively.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Tumeurs de la thyroïde
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Carcinome papillaire
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Récidive tumorale locale
Type d'étude:
Etude d'étiologie
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Etude d'incidence
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Étude observationnelle
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Étude pronostique
/
Facteurs de risque
Limites du sujet:
Adulte
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Femelle
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Humains
/
Mâle
langue:
Anglais
Texte intégral:
Arch. endocrinol. metab. (Online)
Thème du journal:
Endocrinologie
/
Métabolisme
Année:
2018
Type:
Article
Pays d'affiliation:
Chili
Institution/Pays d'affiliation:
Pontificia Universidad Católica de Chile/CL
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