TABLE 1:

LS SURF-1 Group

Case No.	Location of MR Abnormalities
Case No.	Medulla Oblongata	Pons	Midbrain	Cerebellum	Subthalamic Nuclei	Thalami	Basal Ganglia
1	+	+	+	+	+	+	+
2	+	+	+	+	+	−	−
3	+	+	+	+/−	+	−	−
4	+	+	+	+/−	+	−	−
5	+	+	+	+	+	−	−
6	+	+	+	+	+	−	−
7	+	−	+	+	+(−)	+	+
8	+	+	+	+	+	−	−

Note.—Abbreviations are as follows: + indicates present; −, absent; +/−, doubtful; (−), lesion disappeared on follow-up MR images.