Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Embryonal carcinoma ?
    ### Response:
    Embryonal carcinoma is a type of testicular cancer, which is cancer that starts in the testicles, the male reproductive glands located in the scrotum. It most often develops in young and middle-aged men. It tends to grow rapidly and spread outside the testicle.
    