RT Journal Article SR Electronic T1 078 An unusual multiple radiologic findings of sub acute on chronic subdural haematoma: a case report JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP e1 OP e1 DO 10.1136/jnnp-2011-301993.120 VO 83 IS 3 A1 J Wong YR 2012 UL http://jnnp.bmj.com/content/83/3/e1.25.abstract AB Brain haematoma can often elude a junior doctor at the busy Manchester Royal Infirmary Accident and Emergency Department. Here we described an unusual presentation of brain haematoma—a sub acute on chronic subdural haematoma. Radiologic findings of this 82-year-old gentleman on head CT includes the classic mass effect (ipsilateral effacement and contralateral dilatation) and a layered appearance of different densities—a mixture of biconcave isodense (multiple known causes), hypodense (indicative of >21 days bleed), and hyperdense (indicative of 72 h bleed) collection! Here we discussed the type and duration of bleed with multiple CT evidence, also supporting the clinical finding of Hutchinson pupil in our case—a worrying sign of early tentorial herniation! A brief review on thrombolysis is also discussed.