45th Congress of the European Society of Surgical Oncology

SURGICAL ONCOLOGY  WITHOUT BORDERS: INNOVATIONS AND CHALLENGES WORLDWIDE

4-6 November 2026
Madrid, Spain

Dear colleagues, dear partners,

On behalf of the European Society of Surgical Oncology, we are pleased to invite you to participate in the 45th edition of our Annual Congress, which will take place from 4 to 6 November 2026 in Madrid, Spain.

With the theme Surgical Oncology without Borders: Innovations and Challenges Worldwide, we will explore the latest advancements, global perspectives, and shared challenges that shape the future of Surgical Oncology around the world. Madrid, a vibrant city in the heart of Southern-Europe, offers the perfect location for this international meeting.

Read our Welcome Letter

Abstract submission

The ESSO 45 abstract and surgical trial proposal submission is now open!

We invite researchers, clinicians, and residents to share their groundbreaking findings by submitting an abstract.

Submissions close on 6 May 2026!

Registration

Early Registration for the Congress of the European Society of Surgical Oncology will open on 16 March 2026.

Click on the button below to find out what is included in your registration and the fees.

Key dates

11
Feb
2026

Abstract Submission 
open

The ESSO 45 abstract and surgical trial proposal submission is now open!

Share your research with us, by submitting an abstract or surgical trial proposal for the ESSO 45 congress.

Submit now
16
March
2026

Early Registration open

Register early, save more!
Join us in Madrid, Spain for ESSO 45 and connect with the global surgical oncology community. This is the moment to register at the most beneficial rates.
Register now
6
May
2026

Abstract Submission  deadline

The abstract submission deadline for ESSO 45  is fast approaching! Submit your work by the 6 May and contribute to the advancement of cancer surgery.
Opens soon
6
July
2026

Abstract review
results

Abstract results available!
The review outcome notification will be sent to the presenter’s email address.
Opens soon
19
Aug
2026

early registration
deadline

Final days for early registration!
Save your seat at ESSO 45 before 19 August and be part of the leading congress in surgical oncology
Opens soon

About the ESSO Congress

The Annual Congress of the European Society of Surgical Oncology (ESSO) is the leading event in Europe dedicated to advancing surgical cancer care.

Bringing together oncology surgeons, researchers, and healthcare professionals from across the globe, the ESSO Congress offers a dynamic platform for sharing cutting-edge research, surgical innovations, and multidisciplinary approaches to cancer treatment.

With a strong focus on education, collaboration, and excellence in patient outcomes, the congress fosters dialogue, drives progress, and shapes the future of surgical oncology.

Watch the video