We describe an 11-year-old girl investigated after spontaneous thrombosis of a venous angioma. The case is discussed in relation to the diagnostic difficulties and rarity of the event. In the presence of headache with nausea and left hemiparesis, two CT investigations were done with and without contrast administration. The scans disclosed an intraparenchymal haematoma with nodular enhancement from a deep location to the surface, suggesting a possible vascular origin. MR scans disclosed thrombosis of the drainage vein of a vascular abnormality. Angiography confirmed the finding of thrombosis of a venous collector in a venous angioma.
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