P35 Vasculitis by any other name would present just the same

Abstract

Abstract Background Vasculitis can present in many ways and large vessel vascultis is reported rarely to co-present with inflammatory bowel disease. We would like to present two adolescent patients who presented in very similar ways via the gastroenterology team with a seemingly clear diagnosis of inflammatory bowel disease but who were found to have large vessel vasculitis later in their disease journey. The presentation is to raise awareness of this rare co-presentation and to discuss treatment challenges in particular those apparent in adolescent patients crossing the transition bridge. Methods Patient A is a 17 year old boy who has had a long and rocky road to control of his inflammatory bowel disease which presented when he was 2 years old. Histologically it fitted a Crohn’s classification. His journey included moderate response to oral steroids and little to no response to a range of DMARDs, biologics (including infliximab and adalimumab which both had secondary failure) and elemental nutrition, over a period of 12 years. Vedolizumab was introduced this year with almost immediate improvement of gut symptoms, but with ongoing raised inflammatory markers (CRP 79, ESR 86). Incidental investigations of neck pain following the start of vedolizumab revealed significant abnormality in the external carotids, with 70% stenosis. MR angiography confirmed a typical pattern of stenotic large vessel vasculitis. The second patient, B is also 17 and was diagnosed with histological ulcerative colitis aged 14. He has an older brother with IBD but has recently been found to have small bowel disease and is likely therefore to have Crohn’s disease. He is on infliximab 10mg/kg 4 weekly but presented with a 3-month history of high inflammatory markers, malaise towards the end of the 4 week infliximab cycle and drenching night sweats. CT Chest confirmed vasculitis in the thoracic aorta, subclavians and carotids. On PET CT there is mural thickening and no stenosis. Results Patient A presented in paediatric care and B in adult care but because of the seamless rheumatology service and combined MDT with gastroenterology both patients’ care has been widely discussed amongst relevant adult and paediatric teams. Conclusion Large vessel vasculitis might be driving the inflammatory bowel disease in both patients as such the life threatening element of the disease ought to be managed immediately, while ensuring safe transition to between paediatric and adult care. Disclosures S. Rasul None. M. Dockery None. R. Tattersall None. D. Hawley None. S. Maltby None. A. McMahon None.