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Jan Marek

Professor Jan Marek is a Consultant Cardiologist with expertise in paediatric and prenatal cardiology and cardiovascular imaging. He has been working at Great Ormond Street Hospital (GOSH) since 2005.


When children are admitted to Koala Ward or attend as outpatients, they may be seen by a number of other professionals as well as by the doctors and nurses. All of us work together as the Great Ormond Street Hospital neurology multidisciplinary team.


A cystoscopy is a procedure at Great Ormond Street Hospital (GOSH) that lets a doctor look inside and around your bladder using a cystoscope (a tube containing a small camera and a light). 

BRC training schemes

To support the development of the next generation of paediatric academic researchers, NIHR Great Ormond Street Biomedical Research Centre has invested in a number of training and fellowship schemes, including some collaborative schemes with other training providers.

Spinal surgery at GOSH

At Great Ormond Street Hospital (GOSH), we have developed a pathway for children and young people having spinal surgery. Spinal surgery is a complex procedure, so we want you to understand the benefits and risks of the operation so you can make an informed decision about whether to go ahead. This page explains what will happen from your child’s initial clinic appointment through to discharge, which clinicians you may meet and what to expect.