BRAF V600E Mutation in Papillary Thyroid Cancer and Its Effect on Postoperative Radioiodine (131I) Therapy: Should We Modify Our Therapeutic Strategy?

ConclusionsThe mutation of the BRAF V600E gene is related with greater resistance to postoperative treatment with 131I since the onset of the disease.ResumenIntroducciónLa mutación BRAF V600E en el cáncer papilar de tiroides (CPT) parece asociarse a una resistencia al 131I. Nuestro principal objetivo fue cuantificar la respuesta al 131I tras la cirugía tanto en pacientes que presentaban la mutación (BRAF+) como en los que no presentaban el gen mutado (BRAF−).MétodoEstudio prospectivo de los CPT intervenidos y tratados con 131I desde septiembre de 2015 hasta enero de 2017. Variables: edad, género, estadio tumoral, histológicas, tiroglobulina antes de 131I, a las 48 h y a los 6 meses; dosis absorbida y % de actividad a los 2 y a los 7 días y tiempo de eliminación.ResultadosCuarenta y un pacientes y 67 restos tiroideos. El 61% eran BRAF+. En los estadios III y IV, el 80% eran BRAF+. En el vaciamiento ganglionar terapéutico, el 100% eran BRAF+. El número de ganglios fue superior en BRAF+: 3,4 vs 1,2 (p = 0,01). La variante clásica fue predominante en BRAF+ (91,7% vs 8,3%; p = 0,03). El 85,7% vs 14,3% de los BRAF+ tuvieron reacción desmoplásica (p = 0,02). Los BRAF+ presentaban menor dosis absorbida respecto a la actividad administrada (5,4 vs 20 Gy/MBq; p = 0,02); menor % de actividad respecto a la unidad de mas...
Source: Cirugia Espanola - Category: Surgery Source Type: research

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Source: Cancer Management and Research - Category: Cancer & Oncology Tags: Cancer Management and Research Source Type: research
Authors: Lee YK, Hwangbo Y, Lee S, Lee DE, Lee EK, Yeom MS, Joo J, Kong SY Abstract Background While aspirin use is known to be associated with reduced incidence of various cancer types, it is unclear if this benefit extends to thyroid cancer. We aimed to evaluate the association between aspirin use and thyroid cancer development. Methods This nested case-control study used nationwide data from the Korean National Health Insurance Service-National Sample Cohort 2002-2015. In total, 4,547 individuals with newly developed thyroid cancer were matched with 13,641 controls based on age, sex, and follow-up period. Odds r...
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research
Conclusion: Following an initial non-diagnostic FNAB, the probability of yielding a diagnostic result declines with each sequential repeat FNAB. Nonetheless, a tangible possibility of malignancy remains even after repeated non-diagnostic FNABs.  . PMID: 31950884 [PubMed - as supplied by publisher]
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research
Authors: Paparodis R, Karvounis E, Bantouna D, Chourpiliadis C, Chourpiliadi H, Livadas S, Imam S, Jaume JC Abstract BACKGROUND: Incidental finding of differentiated thyroid microcarcinomas (DTMc) in patients undergoing thyroid surgery for benign indications, has become increasingly common. Even though carcinogenesis might relate to the background disease of the gland, the incidence of DTMc in the setting of various thyroid disorders remains unclear. We designed the present study to address this question. METHODS: We reviewed data from two prospectively collected databases of consecutive patients undergoing thy...
Source: Thyroid : official journal of the American Thyroid Association - Category: Endocrinology Tags: Thyroid Source Type: research
When I first saw Jea-Hyoun, in a medical meet-cute straight out of a romantic comedy, she was being evaluated for thyroid cancer. I was an allergy/immunology fellow harried by a pile of paperwork. She was a patient, in the same building where she saw patients of her own as a psychiatry and family practice resident, […]Find jobs at  Careers by KevinMD.com.  Search thousands of physician, PA, NP, and CRNA jobs now.  Learn more.
Source: Kevin, M.D. - Medical Weblog - Category: General Medicine Authors: Tags: Physician Practice Management Psychiatry Source Type: blogs
The objectives of the study were to: (i) Accurately measure the mPTC distance from the thyroid surface; (ii) analyze whether this distance correlates with relevant clinicopathologic parameters; and (iii) investigate the impact of the site of origin of the mPTC on risk stratification. Clinicopathologic features and BRAF mutational status were analyzed and correlated with the site of origin of the mPTC in a multicenter cohort of 298 mPTCs from six Italian medical institutions. Tumors arise at a median distance of 3.5 mm below the surface of the thyroid gland. Statistical analysis identified four distinct clusters. Group A, m...
Source: Cancers - Category: Cancer & Oncology Authors: Tags: Article Source Type: research
Source: World Journal of Surgery - Category: Surgery Source Type: research
This study investigated methods to further improve the prognostic accuracy of the TNM-8th.MethodsWe enrolled 5683 patients who underwent surgery for PTC at the Kuma Hospital. We subdivided tumor extension (T4a) into T4a1 and T4a2 based on intraoperative gross findings and N1 according to size (  
Source: World Journal of Surgery - Category: Surgery Source Type: research
ConclusionsIn pediatric total thyroidectomies, central neck dissection and gross extrathyroidal extension were major predictors for overall hypoparathyroidism. Surgeons performing thyroidectomy in such patients should be aware of the relatively high risk, preserve parathyroid tissue to the extent possible, and be conscientious regarding postoperative calcium monitoring and replacement.
Source: World Journal of Surgery - Category: Surgery Source Type: research
This study compares survival in patients with the rare subtypes of follicular (FTmC) and Hurthle cell (HCmC) microcarcinoma compared to that of papillary thyroid (PTmC) microcarcinoma.MethodsPatients with FTmC and HCmC were selected from the National Cancer Database 2004 –2015 and compared with PTmC. Patient clinicopathological characteristics and overall survival (OS) were analyzed. Multivariable logistic and Cox regression analysis evaluated binary outcomes and predictors of survival. A propensity score matched analysis using age, gender, race, extrathyroidal ex tension (ETE), nodal status, distant metastasis, radi...
Source: World Journal of Surgery - Category: Surgery Source Type: research
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