Fig. 3From: Complete closure of a colo-duodenal fistula in a patient with advanced ascending colon cancer after pembrolizumab combined with radiation therapy: a case reportPET–CT showed that there was strong uptake to main tumor and surrounding lymph nodes (a). After 20 courses of immunotherapy, there was no abnormal uptake in all tumors, which was diagnosed as cCR (b)Back to article page