Clinicopathological features and treatment outcome of oesophageal gastrointestinal stromal tumour (GIST): A large, retrospective multicenter European study

Mahmoud Mohammadi, Nikki S IJzerman, Peter Hohenberger, Piotr Rutkowski, Robin L Jones, Javier Martin-Broto, Alessandro Gronchi, Patrick Schöffski, Nikolaos Vassos, Sheima Farag, Marco Baia, Astrid W Oosten, Neeltje Steeghs, Ingrid M E Desar, An K L Reyners, J W van Sandick, Esther Bastiaannet, Hans Gelderblom, Yvonne Schrage

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Abstract

BACKGROUND: Oesophageal gastrointestinal stromal tumours (GISTs) account for ≤1% of all GISTs. Consequently, evidence to guide clinical decision-making is limited.

METHODS: Clinicopathological features and outcomes in patients with primary oesophageal GIST from seven European countries were collected retrospectively.

RESULTS: Eighty-three patients were identified, and median follow up was 55.0 months. At diagnosis, 59.0% had localized disease, 25.3% locally advanced and 13.3% synchronous metastasis. A biopsy (Fine Needle aspiration n = 29, histological biopsy n = 31) was performed in 60 (72.3%) patients. The mitotic count was low (<5 mitoses/50 High Power Fields (HPF)) in 24 patients and high (≥5 mitoses/50 HPF) in 27 patients. Fifty-one (61.4%) patients underwent surgical or endoscopic resection. The most common reasons to not perform an immediate resection (n = 31) were; unresectable or metastasized GIST, performance status/comorbidity, patient refusal or ongoing neo-adjuvant therapy. The type of resections were enucleation (n = 11), segmental resection (n = 6) and oesophagectomy with gastric conduit reconstruction (n = 33), with median tumour size of 3.3 cm, 4.5 cm and 7.7 cm, respectively. In patients treated with enucleation 18.2% developed recurrent disease. The recurrence rate in patients treated with segmental resection was 16.7% and in patients undergoing oesophagectomy with gastric conduit reconstruction 36.4%. Larger tumours (≥4.0 cm) and high (>5/5hpf) mitotic count were associated with worse disease free survival.

CONCLUSION: Based on the current study, enucleation can be recommended for oesophageal GIST smaller than 4 cm, while oesophagectomy should be preserved for larger tumours. Patients with larger tumours (>4 cm) and/or high mitotic count should be treated with adjuvant therapy.

Original languageEnglish
Pages (from-to)2173-2181
Number of pages9
JournalEuropean Journal of Surgical Oncology
Volume47
Issue number8
Early online date30 Mar 2021
DOIs
Publication statusPublished - Aug 2021

Bibliographical note

Copyright © 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.

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