CENTRE JEAN PERRIN - ISM / SCIENCE PHOTO LIBRARY CENTRE JEAN PERRIN - ISM / SCIENCE PHOTO LIBRARY
Secondary lymph node cancer. Coloured combined computed tomography (CT) and positron-emission tomography (PET) scans of a coronal section through the body of a 55-year-old male patient with lymphoma (orange, lower centre) that has spread (metastasised) from seminoma (cancer) of the left testis (testicle). Seminoma is a malignant (cancerous) germ cell tumour that originates in the seminiferous tubules of the testes (testicles). It is the most common form of testicular cancer and occurs most often in men between the age of 30 to 45 years. It usually presents as a firm painless lump on a testicle. In 90 per cent of cases surgical removal of the testicle leads to a cure.
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