Inflammatory bowel disease in Thai children: presentations and outcomes of treatment.

Inflammatory bowel disease (IBD) is characterized by idiopathic chronic intestinal inflammation, due to abnormalities in gastrointestinal immunoregulation. Pediatric IBD has been rarely reported in Thailand. We describe eight children, five girls and three boys, who were diagnosed with IBD at Ramathibodi Hospital during 1999-2005 and had a follow-up of more than one year. Four cases had Crohn's disease (CD) and four cases had ulcerative colitis (UC). The ages at diagnosis ranged from 3.5 to 15.5 years. Diagnosis of IBD was delayed for more than 12 months in five patients. Five out of eight patients had early onset of disease, before 6 years of age. The manifestations included chronic diarrhea, abdominal pain, rectal bleeding and perianal lesions. The common extraintestinal manifestations were oral ulcer, anemia, weight loss and failure to thrive. Most patients had moderate to severe diseases and ileocolic fistula developed in one patient with CD. The disease was controlled with 5-aminosalicylic acid and corticosteroid in most patients. Four patients required additional therapy with azathioprine. Infliximab was used in two patients who were chronically steroid-dependent CD, one also had persistent ileocolic fistula and both patients responded well. During the follow-up period ranging from 1.1 to 5.8 years, three patients remained growth retardation; all had early onset of disease before 6 years of age, long duration of symptoms of more than 3 years before diagnosis and had multiple relapses. It is concluded that there is an increasing number of IBD in Thai children during the recent years. Most patients had moderate to severe diseases. Early onset of disease, delay in diagnosis and treatment are responsible for more complications, particularly persistent growth impairment. Early recognition of IBD and treatment are essential for a satisfactory long-term outcome.