Capillary haemangioma and varicose veins. View of a capillary haemangioma and varicose veins in a patient's leg. Capillary haemangioma is a common variant of haemangioma, a benign (non-cancerous) tumour of the cells that line blood vessels. It is characterised by an increased number of normal and/or abnormal vessels filled with blood. Here, the blood vessels of the affected area have also become varicosed - swollen, lengthened and coiled.
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