Liver haemangioma. Coloured SPECT (single photon emission computed tomography) scan showing a large haemangioma in a human liver. This series of scans represents "slices" through the liver from top (at top left corner) to bottom (at bottom right corner). The patient has been injected with a radioactive tracer which accumulates in the red blood cells, seen as yellow in these scans. The top layer of scans reveals blood vessels entering the liver in yellow. The middle two layers reveal a large yellow haemangioma in the lobe of the liver (at right). Haemangiomas are benign tumours of vascular tissue which are usually harmless.
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