Orbital intraconal haematic cysts in young people: computed tomography and magnetic resonance imaging

Eight cases of focal non-traumatic haemorrhage into the intraconal retrobulbar space in children or young adults have been examined by computed tomography. The lesion is seen as a smoothly rounded, localized mass, which does not extend to fill the intraconal space. Magnetic resonance imaging in two cases did not reveal the expected high signal on T1-weighted images, but in most patients the combination of clinical and radiological features is sufficiently indicative of the diagnosis to allow conservative management.