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Table 4: Appearances of subpial hemorrhage and underlying brain parenchyma on follow-up MR imaging
Time Interval between Initial and Follow-Up MR Imaging No. of Scans Follow-Up MR (Appearances Compared with Initial MRI)
Subpial Hemorrhage Underlying Cerebral Infarct
1–6 days 8 Similar size and shape Similar size and shape
7–13 weeks 4 Evolved into fluid collection with less mass effect Decreased size
13–28 weeks 6 Evolved into fluid collection with no mass effect Decreased size

Time Interval between Initial and Follow-Up MR Imaging	No. of Scans	Follow-Up MR (Appearances Compared with Initial MRI)
Time Interval between Initial and Follow-Up MR Imaging	No. of Scans	Subpial Hemorrhage	Underlying Cerebral Infarct
1–6 days	8	Similar size and shape	Similar size and shape
7–13 weeks	4	Evolved into fluid collection with less mass effect	Decreased size
13–28 weeks	6	Evolved into fluid collection with no mass effect	Decreased size