AIM To evaluate the efficacy of thalidomide for treating troublesome cases of pediatric Crohn’s disease(CD) with tuberculosis infection.METHODS A retrospective study of clinical outcome among children treated with thalidomide was conducted. All patients had evidence of tuberculosis infection with a failure of anti-tuberculosis treatment for more than one year,and were subsequently diagnosed with CD. All the patients received thalidomide treatment with a starting dose of 1.2-2.5 mg/kg per day. Remission was defined as pediatric CD activity index less than or equal to 10.RESULTS Ten patients with CD were treated with thalidomide at an average age of 7.2 years and followed up for a median of 22.2 mo. Clinical remission rate was 60% after 9-12 mo of thalidomide treatment. One patient with no response had an interleukin-10 receptor alpha gene mutation. Erythrocyte sedimentation rate,C-reactive protein and platelet count showed a dramatic decrease; hemoglobin level and weight improved significantly after thalidomide treatment when compared with the baseline values.CONCLUSION Thalidomide is an effective and safe drug for remission of CD in pediatric patients who have been treated for tuberculosis. AIM To evaluate the efficacy of thalidomide for treating troublesome cases of pediatric Crohn’s disease (CD) with tuberculosis infection. METHODS A retrospective study of clinical outcome among children treated with thalidomide was conducted. All patients had evidence of tuberculosis infection with a failure of anti- All patients received thalidomide treatment with a starting dose of 1.2-2.5 mg / kg per day. Remission was defined as pediatric CD activity index less than or equal to 10. RESULTS Ten patients with CD were treated with thalidomide at an average age of 7.2 years and followed up for a median of 22.2 mo. Clinical remission rate was 60% after 9-12 mo of thalidomide treatment. One patient with no response had an interleukin- 10 receptor alpha gene mutation. Erythrocyte sedimentation rate, C-reactive protein and platelet count showed a dramatic decrease; hemoglobin level and weight improved signif icantly after thalidomide treatment when compared with the baseline values. CONCLUSION Thalidomide is an effective and safe drug for remission of CD in pediatric patients who have been treated for tuberculosis.