Table 4.
Compared Etiologies of Isolated Third, Fourth, and Sixth Cranial Nerve Palsy (%)
| Nerve Palsy | Etiologies | Rush JA et al4 (1981) | Tiffin PA et al5 (1996) | Park UC et al10 (2008) | Kim K et al7 (2018) | Park KA et al16 (2019) | Our Study |
|---|---|---|---|---|---|---|---|
| Oculomotor nerve palsy | Vascular | 20.7 | 46 | 35 | 63.5 | 4.5 | 24.6 |
| Head trauma | 16.2 | 0 | 18.8 | 4.8 | 13.6 | 20 | |
| Neoplastic | 11.7 | 7 | 6.3 | 3.2 | 18.2 | 24.6 | |
| Aneurysm | 13.8 | 0 | 10.4 | 1.6 | 9.1 | 0 | |
| Other | 14.5 | 14 | 10.4 | NA | 50 | 15.4 | |
| Undetermined | 23.1 | 32 | 18.8 | 26.9 | 4.5 | 15.4 | |
| Trochlear nerve palsy | Vascular | 18.6 | 26 | 37 | 54.3 | 28.3 | 16.7 |
| Head trauma | 32 | 26 | 30.4 | 14.3 | 19.6 | 42.9 | |
| Neoplastic | 4.1 | 0 | 0 | 5.7 | 4.3 | 2.4 | |
| Aneurysm | 1.7 | 0 | 0 | 0 | 4.3 | 0 | |
| Other | 7.6 | 3 | 4.3 | NA | 26.1 | 11.9 | |
| Undetermined | 36 | 46 | 28.3 | 25.7 | 17.4 | 26.2 | |
| Abducens nerve palsy | Vascular | 17.7 | 33 | 27.8 | 45.5 | 13.6 | 20.9 |
| Head trauma | 16.7 | 3 | 19.4 | 9 | 6.8 | 27.1 | |
| Neoplastic | 14.6 | 1 | 5.6 | 9 | 37.3 | 16.4 | |
| Aneurysm | 3.6 | 1 | 4.6 | 5.5 | 10.2 | 0 | |
| Other | 17.9 | 28 | 18.5 | NA | 16.9 | 26.5 | |
| Undetermined | 29.6 | 33 | 24.1 | 30.9 | 15.3 | 9.0 |
Note: Data are presented as percentage of patients.
Abbreviation: NA, not applicable.