Browsing by Author "Dinamithra, N.P."

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Changing phenotype of IBD in Sri Lanka
(Sri Lanka Medical Association, 2016) Niriella, M.A.; Kodisinghe, S.K.; Dinamithra, N.P.; Rajapakshe, N.; Nanayakkara, S.D.; Luke, H.P.D.P.; Silva, K.T.M.; Dassanayake, A.S.; de Silva, A.P.; Navarathne, N.M.M.; de Silva, H.J.
INTRODUCTION: Inflammatory bowel disease (IBD) is increasing in Asia Pacific, with recent changes in phenotype reported from some countries. METHOD: Patients with histologically proven IBD [ulcerative colitis(UC), Crohn’s disease(CD), unclassified(U)], diagnosed between January 2006-December 2010 (Group 1) and January 2011-December 2015 (Group 2), who had regular follow up, were included from Colombo North Teaching Hospital and National Hospital of Sri Lanka (two main referral centers). The two groups were compared with regard to phenotype of IBD (subgroups, severity, age at diagnosis, duration of symptoms, extra-intestinal manifestations (EIM) at diagnosis, cigarette smoking, family history, and highest therapy during follow up). RESULTS: 304 patients were included [Group 1: UC-72(74.2%), CD-25(25.8%); Group 2: UC-113(54.6%), CD-90(43.5%), U-4(1.9%)]. There were more females in Group 2 for UC and CD. Median age at diagnosis was similar for UC but higher for CD in Group 2 compared to Group 1.The median duration of symptoms to diagnosis was not different for UC and CD in the two groups. In both groups, left sided colitis (E2) predominated for UC and Ileo-colonic disease (L3) and non-stricturing, non-penetrating (B1) disease predominated for CD. There was no difference in degree of severity, rate of complications, pattern of EIM, smoking history at presentation, family history or highest therapy during follow up for either disease in the two groups (Table 1). CONCLUSIONS: During the 10 years, there seems to be a recent increase in the proportion of CD among IBD patients. However, there were no major changes in disease phenotype for UC or CD.
Early clinical course of IBD in Sri Lanka
(Sri Lanka Medical Association, 2016) Niriella, M.A.; Kodisinghe, S.K.; Dinamithra, N.P.; Rajapakshe, N.; Nanayakkara, S.D.; Luke, H.P.D.P.; Silva, K.T.M.; Dassanayake, A.S.; de Silva, A.P.; Navarathne, N.M.M.; de Silva, H.J.
INTRODUCTION: There is very limited data on the early clinical course of IBD from Sri Lanka. METHOD: Patients with histologically proven IBD [ulcerative colitis(UC), Crohn disease(CD)] of less than 3 years duration, were included from Colombo North Teaching Hospital and National Hospital of Sri Lanka (two main referral centers). Complicated disease behaviour (stricturing or penetrating CD, extensive or pancolitis for UC), treatment refractory disease (frequently relapsing, steroid dependent, steroid refractory, need for biologics) and complications (perforation, bleeding, colectomy and malignancy) were analysed. RESULTS: 177 patients were eligible for inclusion [UC-97(54.8%), 46(47.4%) males, median follow up (IQR) 17.0(5.5-28) months; CD 80(45.2%), 39(48.8%) males, median follow up (IQR) 7(2-21.5) months]. Admissions with severe episodes of extensive or pancolitis for UC were 26(26.8%) and 20(21.1%) respectively. Admissions with severe episodes, stricturing(B2), penetrating(B3) or perianal disease(P) for CD were 7(8.8%), 9(11.5%) and 16(20%) respectively. Treatment refractoriness (steroid dependency, steroid refractory or frequently relapsing) was 6(9.6%) for UC and 6(8.4%) for CD. Immunomodulator use was 35 (37.2%) and 56(72.7%), and Anti-TNF agent use 2(2.1%) and 2(2.6%) respectively for UC and CD. Few had complications [UC-bleeding 5(5.2%), malignancy 1(1%), surgery 2(2.1%); CD-stricture 3(3.8%), perforation 3(3.8%), malignancy 1(1.3%), surgery 3(3.8%)]. CONCLUSIONS: In the early clinical course of this cohort of IBD patients, admissions with complicated disease were common for UC but not CD. Few patients were treatment refractory. Immunomodulator use was more common for CD, but need for biologics was rare for both. Few IBD patients developed complications. This indicates a relatively benign early disease course.
Influence of urban/rural and coastal/inland environment on the phenotype and clinical course of inflammatory bowel disease patients from Sri Lanka: a cross-sectional study
(Sri Lanka Medical Association, 2017) Niriella, M.A.; Kodisinghe, S.K.; Dinamithra, N.P.; Rajapakshe, N.; Nanayakkara, S.D.; Luke, H.P.D.P.; Silva, K.T.M.; de Silva, A.P.; Navarathne, N.M.M.; de Silva, H.J.
INTRODUCTION & OBJECTIVES: Rural/urban and coastal/inland environmental influences on inflammatory bowel disease (IBD) is poorly studied. We investigated such environmental influences on IBD. METHODS: Patients with histologically proven IBD [ulcerative colitis (UC), Crohn disease (CD)] with a permanent residence and regular follow up, were included. Urban areas (UA) were defined as those administered by Municipal and Urban councils. Coastal areas (CA) were defined as areas with elevation <30 meters above sea level. Patients in different groups were compared with regard to phenotype of IBD [sex, age at diagnosis, Montreal subgroups, severity, extraintestinal manifestation (EIM) at diagnosis, and highest therapy during follow-up]. Fisher’s exact test was used to compare categorical variables. RESULTS: A total of 387 patients were included [UC-251 (64.8%), males-122 (48.6%), median followup (IQR)-22.5 (2-59) months; CD-136 (35.2%), males-65 (47.8%), median follow-up (IQR)- 63.0 (23-115) months; urban/rural distribution: UC-1.7:1, CD-1.5:1; coastal/inland distribution: both UC and CD-0.7:1]. Urban/rural or coastal/inland location did not affect the distribution of type of IBD, gender, age at diagnosis or presence of EIM. UC patients from rural areas had extensive disease (E3) (42.4% vs 24.5%, p=0.029) and used long term immunomodulator drugs more frequently (60.2% vs 47.3%; P=0.006) than UA patients. CD patients living in CA had more frequent ileo-colonic disease (L3) compared to inland patients (53.2% vs 38.0%, p=0.016). Patients with both UC and CD from inland areas needed immunomodulators or anti-TNF more frequently than coastal patients (56.7% vs 44.9%, p=0.026 and 82.1% vs 69.9%, p=0.023). CONCLUSION: IBD was more common among patients from inland, UA. Urban/rural or coastal/inland location did not affect gender, age at diagnosis or presence of EIM. However, UC patients from rural areas and CD patients from inland areas had more severe disease.