Table 3 Characteristics of patients with a poor clinical outcome (clinical outcome group 4)
Patient NoComplaintCyst location (side)Galassi type§Neuroimaging Outcome Group
1*HeadacheTemporal (R)I1. Cyst disappeared
2Headache/dizzinessTemporal (R)I2. <50%
3HeadacheTemporal (L)I1. Cyst disappeared
4HeadacheTemporal (L)I3. >50%
5†DementiaTemporal (L)I2. <50%
6Visual disturbanceTemporal (R)I2. <50%
7*Psychiatric disorderTemporal (R)II3. >50%
8‡HeadacheTemporal (L)III
9‡HeadachePosterior fossa (R)
  • *Postoperative hygroma, operated on in patient No 7, spontaneously resolved in patient No 1.

  • †Postoperative subdural empyema.

  • ‡Postoperative neuroimaging examination missing.

  • §See Galassi and colleagues.19 Galassi type I is a small cyst confined to the anterior portion of the middle fossa. Type II is larger and has its superior extension along the Sylvian fissure, with displacement of the temporal lobe and the opercula, opening the fissure in a square-like fashion and exposing the insula. Type III fills the entire middle cranial fossa and extends above the middle fossa, displacing the frontal, temporal and parietal lobes.