ABSTRACT
ABSTRACT Objective: To verify the cytopathological Bethesda System classification of thyroid nodule fine-needle aspiration biopsy (FNAB) in MTC patients and to assess the role of preoperative serum calcitonin (CT) levels in the investigation of this neoplasm in medullary thyroid cancer (MTC) patients under observation at the Uopeccan (União Oeste Paranaense de Estudos e Combate ao Câncer). Materials and methods: This is a cross-sectional review of medical records of patients monitored at the thyroid cancer outpatient clinic of Uopeccan. Clinical and demographic data, laboratory tests, ultrasound images, and cytopathological findings of MTC patients were evaluated. Results and discussion: Among the 360 patients with thyroid cancer monitored in the outpatient clinic, 5.2% (n: 19/360) had MTC. The hereditary form was more prevalent (63.2%), and there was no sex preference. The most common ultrasound findings were hypoechogenicity, solid appearance and microcalcifications. The FNAB diagnoses showed a sensitivity of 47.1%, and the most common cytopathological report was Bethesda category III. Serum CT levels showed good sensitivity (84.6%) for the diagnosis of MTC, and sensitivity levels were directly associated with the size of the nodule and distant metastases. Conclusion: Bethesda category III was more prevalent in this group of MTC patients. Serum CT levels were more sensitive than cytopathology for diagnosis of this neoplasm and were able to identify all patients who could not be diagnosed by FNAB.
Subject(s)
Humans , Thyroid Neoplasms , Thyroid Neoplasms/surgery , Thyroid Neoplasms/diagnosis , Thyroid Nodule , Thyroid Nodule/diagnostic imaging , Thyroidectomy , Calcitonin , Cross-Sectional Studies , Biopsy, Fine-NeedleABSTRACT
Abstract The purpose of the present investigation was to identify the effects of a 130-km cycling race on indices of biochemical indirect markers of muscle damage and muscle soreness responses during a 72-hour recovery period. Fifteen endurance-trained male cyclists which were competing for more than 2 years and were involved in systematic training at least of 3 days/wk underwent a collection of indirect biochemical markers of muscle damage (CK, LDH, Myo) and delayed onset of muscle soreness (DOMS), at five different moments of data collection: before (PRE) and immediately after (POST) a 130-km cycling race, and 24, 48, 72 hours following the cycling race. CK and LDH plasma concentrations significantly increased POST-race (p < 0.001) and remained high throughout the 72 hour recover period (CK: p < 0.05; LDH: p < 0.001). Myo increased significantly POST-race (p < 0.001) and returned to the PRE-race values 24 hours thereafter (p < 0.05). DOMS increased significantly POST-race (p < 0.001) and returned to the PRE-race values at 48 hours after (p > 0.05). A 130-km cycling race has a noteworthy effect on indices of biochemical indirect markers of muscle damage and muscle soreness responses, indicating that 72 hour recovery period do not seems to be enough for long-distance cyclist, and reinforce the propositions of scientific literature about the need of a sufficient recovery period for cycling endurance athletes.
Resumo O objetivo do presente estudo foi identificar os efeitos de uma competição de ciclismo de 130-km nos índices de marcadores bioquímicos indiretos de dano muscular e na dor muscular durante um período de 72 horas de recuperação. Quinze ciclistas do sexo masculino que estavam em treinamento competitivo por mais de dois anos e que estavam em treinamento sistemático, pelo menos três dias por semana, foram submetidos à coleta de marcadores bioquímicos indireto de dano muscular (CK, LDH e Mioglobina) e dor muscular em cinco momentos distintos de coleta: antes, depois, 24, 48 e, 72 horas após uma competição de ciclismo. A CK e a LDH aumentaram imediatamente após a corrida (p < 0,001) e mantiveram-se elevadas durante as 72 horas de recuperação (CK: p < 0,05; LDH: p < 0,001). A Mioglobina aumentou logo após a competição (p < 0,001) e retornou aos valores basais 24 horas após (p < 0,05). A dor muscular aumentou logo após a competição (p < 0,001) e retornou aos valores basais após 48 horas de recuperação (p > 0,05). Uma competição de ciclismo de 130-km teve efeitos notáveis sobre os índices de marcadores bioquímicos indiretos de lesão muscular e dor muscular, indicando que um período de 72 horas de recuperação pode não ser o suficiente para ciclistas de longa distância, isto também reforça as proposições da literatura científica sobre a necessidade de um período de recuperação suficiente para os atletas de ciclismo de fundo.