The HECOVAN working group is a multidisciplinary task force at the Radboudumc that pursues the study and treatment of hemangiomas and both congenital and non-congenital vascular malformations. Participating specialisms include dermatology, plastic surgery, interventional radiology, vascular surgery and oral- and maxillofacial surgery (OMFS). When necessary, we also consult with neurologists, pediatricians, internists, ophthalmologists, ENT specialists or orthopedists.
Diagnostics and treatment
The Hecovan group has a wide array of diagnostic and treatment facilities at its disposal. In an interdisciplinary set-up the most fitting treatments are chosen. For example:
- alcohol embolization of arteriovenous, venous and macrocystic lymphatic malformations;
- intralesional Bleomycin injections of lymphatic malformations;
- treatment with Aethoxysklerol (foam) of superficial venous or lymphatic malformations;
- vascular surgical and plastic surgical interventions;
- treatment after care and counselling of children with (ulcerating) hemangiomas.
Referral?
In case you are a medical professional wishing to refer a patient to Hecovan, we kindly request that you refer your patient to the office hours of one of the participant specialists. Below you will find listed their areas of expertise as wel as the appropriate telephone and fax numbers. Preceding consultation concerning any referral is always possible, of course.
Pediatric surgery
Areas of expertise:
- pediatric surgery, vascular malformations
Dr. B. Verhoeven, chair Hecovan & Dr. H. Daniels, pediatric surgeons
Telephone (024) 361 97 61
Dermatology
Areas of expertise:
- hemangiomas

- vascular malformations at skin level
- vascular malformations with flebological aspects (such as Klippel Trenaunay Syndrome)
Dr. C.J.M. van der Vleuten, dermatologist & Dr. V. Harbers, research physician
Telephone (024) 361 31 31
Interventional radiology
Areas of expertise:
- vascular malformations (arteriovenous, venous and macrocystic lymphatic malformations)
Dr. J.J. Janssen & Dr. T. Geeraedts, interventional-radiologists
Telephone (024) 361 38 08
Internal vascular medicine
Areas of expertise:
medical treatment of vascular malformations with targeted therapy like sirolimus- treatment of thrombosis and prevention of thrombosis in activated coagulation in vascular malformations
Dr. E.M. Klappe & Dr B Sjouke, internists/vascular physicians
Telephone (024) 361 65 04
Pediatric hematology
Areas of expertise:
- medical treatment of vascular malformations, such as with sirolimus
- treatment of thrombosis and prevention of thrombosis in activated coagulation associated with vascular malformations
- treatment of increased bleeding tendency in vascular malformations, particularly in AVMs
Drs. M. Diender, pediatric hematologist & L Janssen, PA pediatric hematology
Telephone (024) 361 44 30
Plastic surgery
Areas of expertise:
- facial hemangiomas and vascular malformations
- residual blemishes from regressive hemangiomas
Dr C. van Houdt & Dr .T de Jong, plastisch chirurgen
Telephone (024) 361 95 94
General information
You can reach the Hecovan working group by telephone at the number (024) 361 31 31 or via e-mail at hecovan@radboudumc.nl
For more information, please go to www.radboudumc.nl/informatievoorverwijzers. where you will find useful guidance with regard to referrals.

