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CC BY-NC-ND 4.0 · Endosc Int Open 2021; 09(03): E313-E318
DOI: 10.1055/a-1336-2505
Original article

Staging esophageal cancer: low EUS accuracy in t2n0 patients

Germana de Nucci
1   Gastroenterology and Endoscopy Unit, ASST Rhodense, Garbagnate Milanese-Milan, Italy
,
Maria Chiara Petrone
2   Bilio-pancreatic Endoscopy and Endoscopic Ultrasound Unit, San Raffaele Hospital, Milan, Italy
,
Nicola Imperatore
3   Gastroenterology and Endoscopy Unit, AORN Cardarelli, Naples, Italy
,
Emanuele Asti
4   Division of General and Foregut Surgery, IRCCS Policlinico San Donato, University of Milano, Milan, Italy
,
Gemma Rossi
2   Bilio-pancreatic Endoscopy and Endoscopic Ultrasound Unit, San Raffaele Hospital, Milan, Italy
,
Giampiero Manes
1   Gastroenterology and Endoscopy Unit, ASST Rhodense, Garbagnate Milanese-Milan, Italy
,
Maurizio Vecchi
5   Gastroenterology and Endoscopy Unit, Ca Granda Policlinic Major Hospital, Milan, Italy
,
Luca Pastorelli
6   Gastroenterology Unit, IRCCS Policlinico San Donato and Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
,
Luigi Bonavina
4   Division of General and Foregut Surgery, IRCCS Policlinico San Donato, University of Milano, Milan, Italy
,
Paolo Giorgio Arcidiacono
2   Bilio-pancreatic Endoscopy and Endoscopic Ultrasound Unit, San Raffaele Hospital, Milan, Italy
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Abstract

Background and study aims Esophageal cancer (EC) is one of the most lethal malignancies worldwide. Staging of EC is performed with computed tomography (CT), positron-emission tomography (PET), and endoscopic ultrasonography (EUS). Patient management mostly depends on lymph node status. Compared to histopathology, the accuracy of EUS for T and N parameters is about 85 % and 75 %, respectively. Errors in staging may change prognosis. The aim of this study was to assess the role of EUS in T2-N0 EC considering the experience of two high-volume digestive endoscopic centers.

Methods Two prospectively collected databases were queried to identify all patients with EC, staged as cT2N0 by EUS, with no distant metastases at CT/PET scan and who underwent transthoracic esophagectomy. Preoperative EUS staging (cTNM) was compared to histopathology of the surgical specimen (pTNM) to evaluate accuracy.

Results Of 729 consecutive patients with EC between January 2011 and September 2018, 72 (49 men) had cT2N0 disease. CT and PET scans confirmed the absence of distant metastasis. In 43 of 72 patients (60 %), the evaluation was correct, 23 of 72 (31,7 %) were understaged, and six of 72 patients (8,3 %) were overstaged. Among the understaged patients, eight were understaged by tumor depth (35 %), seven by nodal involvement (30 %), and eight by both (35 %). All six patients who were overstaged had T1b-N0 disease. EUS accuracy was 77 % in staging for tumor depth and 82 % in staging for nodal metastases. The positive predictive value (PPV) for cT2N0 EC was 60 % (43 pT2N0 /72 cT2N).

Conclusions The accuracy of EUS staging of T2N0 EC is low, with only 60 % of patients undergoing appropriate therapy based on histopathology.



Publication History

Received: 18 June 2020

Accepted: 14 October 2020

Article published online:
18 February 2021

© 2021. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commecial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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