11 September 2020
: Case report 
Role of Long-Term Vestibular Rehabilitation in a Patient with Posterior Fossa Tumor: A Case Report with 2 Years of Follow-Up
Unusual clinical course, Challenging differential diagnosis
Yuşa Başoğlu1ABCDEFG*, Oğuz Yilmaz1ABDG, İlayda Çelik1BEF, Mustafa Bülent Şerbetçioğlu1BEGDOI: 10.12659/AJCR.924262
Am J Case Rep 2020; 21:e924262
Table 1. The patient’s videonystagmography (VNG) findings.
| VNG | Pathological findings on October 20, 2016 | Pathological findings on October 31, 2018 |
|---|---|---|
| Spontaneous nystagmus | No pathological findings were observed | No pathological findings were observed |
| Gaze nystagmus | No pathological findings were observed | No pathological findings were observed |
| Saccade testing | Hypermetric saccades (overshoots) and prolonged latency were observed | No pathological findings were observed |
| Smooth pursuit test | Low gain was observed only at 0.4Hz (bilaterally) | Low gain was observed only at 0.4 Hz (right) |
| Optokinetic nystagmus | Low gain was observed on the left horizontal plane | Low gain was observed on the left horizontal plane |
| Head-shake test | 10° downbeat nystagmus was observed | No pathological findings were observed |
| Dix-Hallpike maneuver | No pathological findings were observed | No pathological findings were observed |
| Postional head | No pathological findings were observed | No pathological findings were observed |
| Caloric test | No asymmetry and directional preponderance were observed | No test |