Precise staging of pancreatic cancer is crucial for treatment choice. In clinical practice, this includes the TNM staging and determination of tumour resectability, based on a multimodality imaging workup. International guidelines recommend multi-detector computed tomography (CT), with a dedicated pancreatic protocol, as the first-line tool for TNM staging and evaluation of tumour-vessel relationships. In non-metastatic disease upon initial CT assessment, both magnetic resonance imaging and endoscopic ultrasound (EUS) may add relevant information, potentially changing treatment sequence. EUS may have distinct advantages in pancreatic cancer diagnosis and staging when compared with other modalities, being particularly valuable in the determination of portal venous confluence involvement (particularly in small and ill-defined/isoattenuating tumours on CT), in locoregional nodal staging and in the detection of ascites. As we step forward to a more frequent use of neoadjuvant chemotherapy and to personalised medicine, the importance of EUS-guided fine-needle biopsy (EUS-FNB) also increases. The recent availability of third-generation biopsy needles significantly increased the diagnostic yield of EUS-guided tissue acquisition, providing diagnostic cell blocks in approximately 95% of cases with only two dedicated passes and allowing ancillary testing, such as immunohistochemistry and molecular profiling of the tumour. In this article, the authors present an updated perspective of the place of EUS and EUS-FNB in the staging algorithm of pancreatic cancer. Data supporting the increasing role of neoadjuvant therapy and the importance of a patient-tailored treatment selection, based on tumoural subtyping and molecular profiling, are also discussed.

No cancro do pâncreas é fundamental um estadiamento preciso para a decisão terapêutica. Na prática clínica, isto inclui o estadiamento TNM e a avaliação da ressecabilidade cirúrgica, baseada numa avaliação imagiológica multimodal. As recomendações de consenso recomendam a tomografia computorizada (TC) multi-detector, com protocolo pancreático, como exame de primeira linha para o estadiamento TNM e determinação de invasão vascular loco-regional. Na doença loco-regional não-metastática (após TC inicial), a ressonância magnética e a ecoendoscopia poderão acrescentar informação relevante, com potencial impacto na decisão terapêutica. A ecoendoscopia apresenta vantagens únicas comparativamente a outros métodos de estadiamento, sendo particularmente útil na avaliação da relação do tumor com a confluência espleno-portal (especialmente na presença de tumores pequenos e isodensos/mal-definidos na TC), no estadiamento ganglionar loco-regional (N) e na detecção de ascite. À medida que caminhamos no sentido da utilização crescente de quimioterapia neoadjuvante e da Medicina personalizada, a relevância da biopsia guiada por ecoendoscopia também aumenta. A recente disponibilização de agulhas de biopsia de terceira geração aumentou significativamente a rentabilidade diagnóstica da punção guiada por ecoendoscopia, obtendo cell-blocks para avaliação histológica em cerca de 95% dos casos (com apenas duas passagens), permitindo a realização de estudos ancilares, como avaliação imuno-histoquímica e caracterização molecular do tumor. No presente artigo os autores apresentam uma perspetiva do papel atual da ecoendoscopia e da biopsia guiada por ecoendoscopia no algoritmo de estadiamento do cancro do pâncreas. É ainda analisada a evidência atual que favorece o papel crescente da terapêutica neoadjuvante e a importância da seleção individualizada do tratamento, baseada na definição do subtipo de tumor e na caracterização molecular.

Palavras Chave Ecoendoscopia, Biopsia por agulha fina, Estadiamento do cancro do pâncreas, Medicina personalizada, Terapêutica neoadjuvante, Terapêutica de precisão

This content is only available via PDF.
Open Access License / Drug Dosage / Disclaimer
This article is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND). Usage and distribution for commercial purposes as well as any distribution of modified material requires written permission. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.