Lee et al. A B C Fig. 1. Chronic subdural hematoma (SDH) in a three-month-old female patient. A. T1-weighted image shows mainly low-signal SDH, with a high signal focus in the left frontal area. B. On a T2-weighted image the signal intensity of the chronic SDH is mainly high, with a focal area of low intensity. C. Contrast-enhanced T1-weighted image shows overlying linear dural enhancement. A B C Fig. 2. Chronic SDH in an eight-month-old male patient. A. T1-weighted image shows low-signal SDH in both frontal areas. A high signal area, suggesting subacute hemorrhage, may also be observed in the right frontal area (arrow). B. On a T2-weighed image, the signal intensity of the SDH is mainly high, though there is a focal area of low intensity (arrow). C. Contrast-enhanced T1-weighted image shows diffuse linear dural enhancement. laboratory examinations were unremarkable. Simple skull and chest radiographs showed no abnormality. MRI per- formed the following day revealed bilateral fronto-tem- poro-parietal SDH. This showed a mainly low signal on T1-weighted images and a high signal on T2-weighted im- ages. On the right side, the hematoma showed a high focal signal on T1-weighted images, suggesting rebleeding. Contrast-enhanced MRI revealed the dura mater as faintly enhanced (Fig. 2), and fundoscopic examination performed the following day indicated bilateral retinal hemorrhage. There was no definite history of child abuse. On hospital day 22, subdural catheter drainage was performed and about 400cc of chronic hematoma was evacuated. Case 3 A two-month old baby girl was admitted to the emer- 172 Korean J Radiol 2(3), September 2001