Figure 1.
Flow diagram of search and selection of eligible publications.
Figure 2.
Age distribution of spinal CE (data on 325 cases).
Figure 3.
Anatomical allocation of spinal CE.
Left: frequency of involved spine levels in 467 cases [C: cervical; CT: cervico-thoracal; T: thoracal; TL: thoraco-lumbal; L: lumbar; LS: lumbo-sacral; S: sacral]. Right: top: frequency of the involved vertebral levels in 303 cases. bottom: number of vertebral levels involved in 287 cases.
Figure 4.
Spinal levels involved in patients with (78 cases) and without (248 cases) history of surgery for extraspinal CE (data on 326 cases).
Table 1.
Prevalence of previous surgical interventions/concomitant asymptomatic extraspinal CE (data from 467 cases).
Table 2.
Location of extraspinal CE.
Figure 5.
Classification of spinal CE according to the Dew/Braithwaite & Lees classification (type 1–5) and ‘dumbbell’ formation.
Figure 6.
Involved anatomical structures at vertebral level in 230 spinal CE cases.
Table 3.
Anatomical structures involved in 230 spinal CE cases.
Table 4.
Number of anatomical sites/structures involved in 230 spinal CE cases.
Figure 7.
Age distribution of cases with extradural vs. intradural cyst location (data on 325 cases).