Impact of the updated TNM staging criteria on prediction of persistent disease in a differentiated thyroid carcinoma cohort

ABSTRACT Objective: The 8th TNM system edition (TNM-8) released in 2018 presents significant changes when compared to the 7th edition (TNM-7). The aim of this study was to assess the impact of changing the TNM staging criteria on the outcomes in a Brazilian cohort of differentiated thyroid carcinoma (DTC). Subjects and methods: DTC patients, attending a tertiary, University-based hospital, were classified by TNM-7 and TNM-8. Prediction of disease outcomes status of the two systems was compared in a retrospective cohort study design. Results: Four hundred and nineteen DTC patients were evaluated, comprised by 82% (345/419) women, with mean age at diagnosis of 46.4 ± 15.6 years, 89% (372/419) papillary thyroid carcinoma, with a median tumor size of 2.3 cm (P25-P75, 1.3-3.5). One hundred and sixty patients (38%) had lymph node metastases and 47 (11%) distant metastases at diagnosis. Using the TNM-7 criteria, 236 (56%) patients were classified as Stage I, 50 (12%) as Stage II, 75 (18%) as Stage III and 58 (14%) as Stage IV. When evaluated by the TNM-8, 339 (81%) patients were classified as Stage I, 64 (15%) as Stage II, 2 (0.5%) as Stage III and 14(3%) as Stage IV. After a median follow-up of 4.4years (P25-P75 2.6-6.6), the rate of incomplete biochemical and/or structural response was 54% vs. 92% (P = 0.004) and incomplete structural response was 42% vs. 86% (P = 0.009) for patients classified as stage IV by TNM-7 vs TNM-8, respectively. Only 4 (1%) disease-related deaths were recorded. Conclusions: In our cohort, 37% of DTC patients were down staged with the application of TNM-8 (vs. TNM-7). Additionally, TNM-8 seems to better stratify the risk of structural incomplete response at follow-up.

Thyroglobulin measurements in washout of fine needle aspirates in cervical lymph nodes for detection of papillary thyroid cancer metastases / Determinação da tireoglobulina no lavado da agulha da punção aspirativa de linfonodos cervicais para detecção de metástases do câncer papilar de tireoide

OBJECTIVE: The aim of this study was to evaluate the accuracy of the measurement of thyroglobulin in washout needle aspiration biopsy (FNAB-Tg) to detect papillary thyroid cancer (PTC) metastases. SUBJECTS AND METHODS: Forty-three patients (51.4 ± 14.6 years) with PTC diagnosis and evidence of enlarged cervical lymph nodes (LN) were included. An ultrasound-guided fine-needle aspiration of suspicious LN was performed, for both cytological examination and measurement of FNAB-Tg. RESULTS: The median values of FNAB-Tg in patients with metastatic LN (n = 5) was 3,419 ng/mL (11.1-25,538), while patients without LN metastasis (n = 38) showed levels of 3.7 ng/mL (0.8-7.4). Considering a 10 ng/mL cutoff value for FNAB-Tg, the sensitivity and specificity was 100 percent. There were no differences on the median of FNAB-Tg measurements between those on (TSH 0.07 mUI/mL) or off levothyroxine (TSH 97.4 mUI/mL) therapy (3.3 vs. 3.8 ng/mL, respectively; P = 0.2). CONCLUSION: The results show that evaluation of FNAB-Tg in cervical LN is a valuable diagnostic tool for PTC metastases that can be used independent of the thyroid status.

OBJETIVO: O objetivo deste estudo foi avaliar a acurácia da dosagem de tireoglobulina no lavado da agulha da punção aspirativa (PAAF-Tg) de linfonodos (LN) cervicais para detecção de metástases do câncer papilar de tireoide (CPT). SUJEITOS E MÉTODOS: Foram incluídos 43 pacientes (51,4 ± 14,6 anos) com diagnóstico de CPT e evidência de LN cervicais aumentados. Os LN suspeitos foram submetidos à punção aspiração com agulha fina guiada por ecografia para análise citológica e dosagem de tireoglobulina (PAAF-Tg). RESULTADOS: A mediana dos valores de PAAF-Tg nos LN metastáticos (n = 5) foi 3.419,0 ng/mL (11,1-25.538), enquanto nos LN não metastáticos (n= 38) a mediana foi de 3,7 ng/mL (0,8-7,4). Utilizando-se o nível de 10 ng/mL como ponto de corte, observaram-se sensibilidade e especificidade de 100 por cento. Os níveis de TSH sérico não interferiram na dosagem de PAAF-Tg (3,3 e 3,8 ng/mL nos grupos com TSH supresso (TSH 0,07 mUI/mL) e hipotireoidismo (TSH 97,4 mUI/mL), respectivamente, P = 0,2). CONCLUSÃO: Os resultados demonstram que a dosagem de PAAF-Tg é uma ferramenta importante no diagnóstico de metástases do CPT, podendo ser utilizada independente do "status" tireoidiano.

Doença de Castleman e síndrome de Poems: relato de caso e revisão da literatura / Castleman disease and Poems syndrome: case report and review

A Doença de Castleman é uma desordem linfoproliferativa que apresenta relação etiológica com o herpes vírus tipo 8 e o HIV, manifestando-se de duas formas distintas. A forma unicêntrica é benigna, não cursa com sintomas sistêmicos e geralmente é curada com a ressecção cirúrgica. A forma multicêntrica geralmente apresenta-se com linfadenopatia generalizada, febre, emagrecimento, entre outras manifestações sistêmicas e pode estar associada a malignidades, entre as quais a síndrome de POEMS (polineuropatia, organomegalia, endocrinopatia, gamopatia monoclonal e alterações de pele). Relatamos o caso de um homem de 50 anos que se apresentava com emagrecimento, febre e linfadenopatia, associado a gamopatia monoclonal, organomegalia, endocrinopatia e neuropatia, cujo diagnóstico foi de Doença de Castleman cursando com síndrome de POEMS.

Castleman’s disease is a lymphoproliferative disorder related with human herpesvirus 8 and HIV, presenting in two different ways. The unicentric form is benign, doesn’t have systemic symptoms and is usually cured with surgery. The multicentric form usually presents with generalized lymphadenopathy, fever, weight loss, and other systemic manifestations and it can be associated with malignancy, especially POEMS syndrome. We report a case of a 50 year old man presenting with weight loss, fever and lymphadenopathy, associated with monoclonal gammopathy, organomegaly, endocrinopathy and neuropathy, which diagnosis was Castleman’s disease with POEMS syndrome.

Insuficiência adrenal primária como primeira manifestação de câncer pulmonar metastático / Primary adrenal insufficiency as first manifestation of metastatic lung cancer

A insuficiência adrenal primária é, na maioria das vezes, causada por infecções e adrenalite auto-imune. Metástases adrenais são relativamente comuns em neoplasias de pulmão, mas usualmente são assintomáticas, mesmo quando bilaterais. Há poucos relatos de metástases adrenais levando à insuficiência adrenal. Descrevemos aqui um caso de insuficiência adrenal primária como primeira manifestação clínica de neoplasia pulmonar metastática. Paciente de 59 anos, feminina, branca, tabagista, queixava-se de dor em flanco direito associada a náuseas e emagrecimento. Exames laboratoriais confirmaram o diagnóstico de insuficiência adrenal primária. Iniciou tratamento com prednisona e fludrocortisona, com melhora progressiva dos sintomas. Na investigação da etiologia, tomografia computadorizada (TC) de abdômen mostrou aumento bilateral das adrenais. Foi submetida à biopsia de adrenal, com citopatológico positivo para células malignas. Linfonodo supraclavicular esquerdo foi biopsiado, com anátomo-patológico (AP) confirmando adenocarcinoma metastático, com imunohistoquímica sugerindo pulmão como sítio primário. Atentar para o diagnóstico de insuficiência adrenal nesse contexto é importante, porque os sintomas iniciais são inespecíficos, podendo ser atribuídos à neoplasia

Primary adrenal insufficiency is, in most cases, caused by infections and autoimmune adrenalitis. Adrenal metastasis are relatively common in lung cancer, but they are usually asymptomatic, even when bilateral. There are few reports of adrenal metastasis as a cause of adrenal insufficiency. We describe a case of primary adrenal insufficiency presenting as the first clinical manifestation of metastatic lung cancer. A 59 year-old, white, smoker woman, complaining of right flank pain associated with nausea and weight loss. Laboratory exams confirmed the diagnosis of primary adrenal insufficiency. It was started treatment with prednisone and fludrocortisones with progressive improvement. At the etiologic investigation, abdominal computadorized tomography (CT) showed bilateral increase of the adrenal glands. It was performed an adrenal biopsy and the cytologic study was positive for malignant cells. It was made another biopsy, of a supraclavicular lymph node, and the histopathologic study revealed a metastatic adenocarcinoma, immunohistochemistry study suggested lung as the primary site. Awareness of this diagnosis is important because initial symptoms of adrenal insufficiency are unspecific and may misguidedly be attributed to the neoplasm