**7. Conclusion**

Early diagnosis of rejection of the transplanted small intestine is essential to facilitate the initiation of therapy that interferes with rejection progression. In addition to crypt apoptosis, apoptotic bodies in the lamina propria is considered useful for diagnosis. Furthermore, iNKT cell infiltration was another characteristic finding. Since histologic features of ACR have been studied extensively. Of note in future diagnoses are the issues of humoral and chronic rejection.
