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Abnormal foetus. Coloured magnetic resonance imaging (MRI) scan of a sagittal view through a 26-week-old (second trimester) foetus with an abnormality in its brain. The abnormal cerebellum (orange) was first identified during an ultrasound scan and an MRI scan was carried out for confirmation. The foetus is facing its mother back (left). The foetus' organs are visible (blue). The light area below the foetus is the 26-year-old mother's bladder. (KEYSTONE/SCIENCE PHOTO LIBRARY/) === ===