TABLE 2: Leptomeningeal enhancement and cortical hyperintensity on MR images
| Diagnosis | Leptomeningeal Enhancement (Enhanced T1-Weighted Image) | Cortical Hyperintensity (FLAIR or T2-Weighted Image) | ||
|---|---|---|---|---|
| SCLI (+) (n = 19) | SCLI (−) (n = 98) | SCLI (+) (n = 19) | SCLI (−) (n = 98) | |
| Meningitis (n = 58) | 5 /5 (100) | 27 /53 (51) | 5 /5 (100) | 7 /53 (13) |
| Encephalitis (n = 38) | 9 /9 (100) | 9 /29 (31) | 8 /9 (89) | 24 /29 (83) |
| Leptomeningeal metastasis (n = 21) | 5 /5 (100) | 10 /16 (62) | 1 /5 (20) | 2 /16 (12) |
| Total (n = 117) | 19 /19 (100) | 46 /98 (47) | 14 /19 (74) | 33 /98 (34) |
Note.—SCLI (+) and SCLI (−) indicate patients with and those without, respectively, subcortical low intensity. Numbers in parentheses are percentages.