There have been previous studies, especially in Western countries and even in some areas in Asia, about extra-intestinal manifestations (EIMs) and its link with the outcome of inflammatory bowel disease (IBD), which includes Crohn’s disease (CD), and ulcerative colitis (UC). This link is crucial when discussing a patient’s prognosis and important when dealing with UC management. The aim of this study was to clarify the most common comorbidities associated with UC, emphasizing immunologic comorbidities in Japan. This study was a retrospective analysis performed at Nagoya University Hospital. The data collection started in March, 2019, and continued for two years. We retrieved the medical records of 105 patients with UC diagnosis, from which the data of 176 EIMs were extracted and analyzed. Results showed that EIMs with UC in the active phase accounted for 43.7% of total EIMs. Twenty-six patients with immune-mediated inflammatory disease frequently had an active phase (odds ratio [OR] 3.84, 99% CI, 1.44–10.27). Comorbidities showing an active manifestation of symptoms and UC in the active phase were significantly correlated in patients with immunological comorbidities, such as peripheral arthritis (r = 0.97, p < 0.01) and rheumatoid arthritis (RA) (r = 0.99, p < 0.01), as well as in patients with primary sclerosis cholangitis (PSC) (r = 0.98, p < 0.01). In conclusion, this analysis suggests the importance of having full comprehension of how immunological comorbidities affect the natural development of UC, which is of vital importance to prevent further UC complications and properly adjust the management of the disease.Se trata de un análisis retrospectivo que estudia múltiples comorbilidades de índole inmunológico que se da en pacientes con colitis ulcerosa. Este estudio se llevó a cabo en el hospital universitario de la Universidad de Nagoya. Se recolectó datos de 105 pacientes con colitis ulcerosa, de los cuales 176 comorbilidades extraintestinales fueron analizadas. Se encontró que comorbilidades con manifestación activa de síntomas y con colitis ulcerosa en fase activa fueron significativamente correlacionadas en pacientes con comorbilidades inmunológicas, tales como artritis periféricas (r=O.97, P<O.OI ), artritis reumatoide (r=O.99, P<O.OI ), así como pacientes con colangitis esclerosa primaria (r=O.98, P<O.OI ). En conclusión, este análisis sugiere la importancia de tener plena comprensión de cómo las comorbilidades inmunológicas afectan el desarrollo natural de la colitis ulcerosa, lo cual es de vital importancia para prevenir mayores complicaciones de la colitis ulcerosa y ajustar adecuadamente el manejo de la enfermedad.Japón. Ministerio de Educación, Cultura, Deportes, Ciencia y Tecnología (Monbukagakusho)Artículo de investigació
