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Table 2: Mean intracranial-volume normalized ratios, SDs, and volume ranges for the right and left mammillary bodies in patients with colloid cysts and controls
Cyst Patients (n = 38) Controls (n = 20)
Mean (SD) Range Mean (SD) Range
.08 mm 
    Right 0.030 (0.015) 0.038–0.053 0.060 (0.014) 0.034–0.098
    Left 0.031 (0.018) 0.020–0.057 0.057 (0.013) 0.042–0.09
1.0 mm 
    Right 0.032 (0.016) 0.007–0.048 0.047 (0.080) 0.037–0.064
    Left 0.035 (0.015) 0.007–0.059 0.047 (0.050) 0.038–0.054

Cyst	Patients (n = 38)		Controls (n = 20)
Cyst	Mean (SD)	Range	Mean (SD)	Range
.08 mm
Right	0.030 (0.015)	0.038–0.053	0.060 (0.014)	0.034–0.098
Left	0.031 (0.018)	0.020–0.057	0.057 (0.013)	0.042–0.09
1.0 mm
Right	0.032 (0.016)	0.007–0.048	0.047 (0.080)	0.037–0.064
Left	0.035 (0.015)	0.007–0.059	0.047 (0.050)	0.038–0.054