SFTPB and normal pressure hydrocephalus: ANOVA, comparing the acute hydrocephalic conditions subset, the NPH subset and the control group as three equal groups regarding CSF-SP concentrations and measures of ventricular enlargement revealed the following results: SP-A, SP-C, SP-D, Evans’ Index and LVAI, but not SP-B were significantly different between the groups (SP-A: p < 0.001, SP-C: p < 0.001, SP-D: p = 0.046, Evans’ Index: p < 0.001, LVAI: p < 0.001).