Stock Photo: CHEMOTHERAPY. CHEMOTHERAPY The pictures of this photo essay can be used only to illustrate cancer. Photo essay from the Gustave_Roussy Institute, France. Anti_cancer center. Photo essay on Gregory who defeated the testicular cancer. Gregory during his first chemotherapy, is practising exercise bike. Gregory was 26 years old when he was affected of a testicular cancer. Mistakes in the diagnostic have delayed the start of the treatments and have enable the tumor to grow and create metastases in th