Brain cancer. Magnetic resonance imaging (MRI) scan of an axial section through the left hemisphere of the brain of a 35-year-old male patient, showin

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Brain cancer. Magnetic resonance imaging (MRI) scan of an axial section through the left hemisphere of the brain of a 35-year-old male patient, showing the presence of a large lesion (round, centre), suggestive of a primitive neuroectodermal tumour. Primitive neuroectodermal tumours are rare malignant (cancerous) tumours that usually occur in children and young adults under 25-years-old. The overall 5 year survival rate is about 53 percent. Here, the diagnosis was confirmed through biopsy of the affected tissue.

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Photo credit: © ZEPHYR/SCIENCE PHOTO LIBRARY / Alamy / Afripics
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