Program ONCOlogisch Treffen 2022

The annual Dutch Veterinary Oncology Conference will proceed in 2022:

The topic will be on GASTRO-INTESTINAL TUMORS, titled “Let’s look at the treatment menu!”

The congress will be held on Saturday 12 and Sunday 13 February 2022.

Due to the changing times caused by COVID-19, requests by colleagues to be able to follow online from home and the digital possibilities, the ONCOlogisch Treffen Congress will be a held as a hybrid congress for the first time, meaning that it will be held onsite and online at the same time. Sessions will be recorded for later on-demand viewing.

UPDATE 23/01/2022: according to the current regulations of the Dutch Government, we can only have 37 people onsite. With our own team, the speakers, the technical people and the people already registered, that number is reached (on Tuesday 25 January new rules will be decided, so this number can hopefully change). Therefor, the congress will proceed as a hybrid congress (onsite and online), but we cannot take anymore attendees onsite (unless the number changes on Tuesday 25 January). So, all new registrations are for the synchronous live online congress and later on-demand viewing. 

If, for some COVID reason, the onsite congress cannot take place, it will immediately be switched to a full online congress.

The preliminary program can be found below on this page or here in pdf.


Here’s the link to the registration page.


Here you can find a historical overview of our past 16 editions of the ONCOlogisch Treffen:

16 years of ONCOlogisch Treffen historical overview of subjects


Program ONCOlogisch Treffen 2022: 12 & 13 February 2022

Gastro-intestinal tumors: let’s have a look at the treatment menu


Day 1

Chairpeople: Ruth Fortrie & Tom Hendrickx

08.30 – 09.00 Registration & coffee

09.00 – 09.15 Congress opening


Session 1: Oral tumors: newest treatment options

09.15 – 10:25 Non-tonsillar SCC

Medical Oncologist Frédérique Ponce:

• An overview and a case

Surgeon Joachim Proot:

• How to tackle your first mandibulectomy

• Glossectomy surgery: what is possible and what is not

• Differences between dogs and cats: what’s tolerated?


10.25 – 11.00 Tonsillar SCC:

Medical Oncologist Frédérique Ponce:

• Diagnostic imaging, medical treatment with/after and without surgery and prognosis

Surgeon Joachim Proot:

• What can we remove?


11.00 – 11.30 Coffee break

11.30 – 12.00 Canine Squamous Cell Carcinoma and radiotherapy

Radiotherapist Imke Schoepper:

• Side effects of radiotherapy and management

• Intensity-modulated Radiation Therapy treatment planning, how does it work?


12.05 – 12.20 Feline Squamous Cell Carcinoma

Radiotherapist Imke Schoepper:

• Radiation therapy: what has been done and tried out

• Sono chemotherapy and holmium as new potential treatment options

• Described chemo drugs


12.20 – 12.30 Time for questions & panel discussion

12.30 – 13.30 Lunch


13.30 – 14.15 Human Keynote lecture Prof. dr. Remco de Bree:

• Surgical treatment of oral cavity carcinomas


Session 2: Stomach & Small Intestine Cancer

14.15 – 15.15 Gastric & Intestinal lymphoma in dogs and cats

Medical oncologist Frédérique Ponce:

• Gastric & intestinal lymphoma, with a focus on differences between both species


15.15 – 15.45 Coffee break

15.45 – 16.00 Gastric & Intestinal lymphoma in dogs and cats

Radiotherapist Imke Schoepper:

• Abdominal radiation in feline lymphoma


16.00 – 17.00 Stomach & small intestinal cancer: other tumortypes

Medical oncologist Frédérique Ponce:

• An overview

Surgeon Joachim Proot:

• Stomach cancer: surgical approaches, after care and outcome


17.00 – 17.30 Stomach & small intestinal cancer: other tumortypes

Surgeon Lucinda van Stee:

• Intestinal surgery: what’s new, what’s hot and what’s not in intestinal surgery


17:30 – 18.00 Time for questions & panel discussion incl human keynote lecturer 30 minutes

18.00 – 18.45 Drinks at the bar offered by SDK (if possible at all)

19.00 – 23.00 Dinner (if possible at all)


Day 2

Chairpeople: Ruth Fortrie & Tom Hendrickx

08.30 – 9.00 Welcome with coffee


Session 3: Large Intestines

9.00 – 09.45 Colon tumor types

Medical oncologist Frédérique Ponce:

• Medical imaging: why is it sometimes so difficult to find them?

• Endoscopy: how to prepare your patient (and their owners)

• Overview of tumor types

• Medical treatment options


09.45 – 10.15 Colon carcinoma and other surgical removable colon tumors

Surgeon Lucinda van Stee:

• Use of endoscopy

• Surgical options: how far can we go?


10.15 – 10.45 Coffee break


Session 4: rectal and anal cancers

10.45 – 11.15 Colorectal tumors

Surgeon Lucinda van Stee:

• Rectal pull through surgery technique:


11.15 – 12.00 Rectal lymphoma

Medical oncologist Frédérique Ponce 45 minutes:

• Diagnosis, behavior and treatment options


12.00 – 12.15 Time for questions & panel discussion 15 minutes

12.15 – 13.15 Lunch break


13.15 – 14.00 AGASACA (Apocrine Gland Anal Sac AdenoCarcinomA)

Surgeon Joachim Proot:

• Short introduction, different sides where the metastasize to & surgical treatment options


14.00 – 14.30 AGASACA: Adjuvant treatment options?

Medical oncologist Frédérique Ponce:

• An overview


14.30 – 15.15 Radiotherapy for AGASACAS and update on RT for other intraabdominal tumors.

Radiotherapist Imke Schoepper

Stereotactic radiotherapy: How does it work, when should we use it?


15.15 – 15.45 Time for questions & panel discussion 30 minutes

15.45 – 16.00 Closing ceremony