DU CANE MEDICAL IMAGING LTD / SCIENCE PHOTO LIBRARY DU CANE MEDICAL IMAGING LTD / SCIENCE PHOTO LIBRARY
Ectopic hydrocephalic shunt. Coloured 3D magnetic resonance imaging (MRI) scan of the pelvis of a patient, showing an ectopic (abnormally positioned) hydrocephalic shunt (ring, centre). A hydrocephalic shunt is used to treat hydrocephalus, an abnormal accumulation of cerebrospinal fluid (CSF) in the brain. The shunt, a prosthetic one-way valve, would normally be positioned in the abdomen, where it drains the excess CSF from the brain to the peritoneal cavity to be reabsorbed into the blood stream. Here the shunt has detached and moved to the pelvis.
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