case_images: PMC11374603_01
case_images: Fundus inspection of the left (A) and right eyes (B). (A) Vitreal hemorrhage (black arrow) and retinal detachment (white asterisk) are visible. (B) Normal fundus appearance.
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case_images: PMC11374603_01_fvets-11-1439432-g001.jpg
case_images: fig1
case_images: Fundus inspection revealed vitreal hemorrhages and retinal detachments (Figure 1).
case_images: Coronal plane image with soft tissue algorithm in the brain window. Scale bar = 8 mm. A hypoattenuating ovalar intra-axial lesion with ill-defined margin is observed at level of parieto-temporal area at the level of the right cerebral hemisphere (white arrow) (Pitch 0.562, slice thickness: 1.25 mm).
case_images: fvets-11-1439432-g002.jpg
case_images: PMC11374603_01_fvets-11-1439432-g002.jpg
case_images: fig2
case_images: Based on these findings, post-traumatic cerebral edema was hypothesized, such as from severe non-hemorrhagic cerebral contusion (Figure 2).
case_images: Flash visual evoked potentials of the right eye (A) and left eye (B). Traces a and c were obtained by light stimulation with the eyes open. Traces b and d were obtained with the eyes closed. The recorded traces from the left eye exhibited pathological findings, demonstrating the absence of peaks in both stimulations. Conversely, the traces obtained from the right eye were normal and exhibited the expected peaks.
case_images: fvets-11-1439432-g003.jpg
case_images: PMC11374603_01_fvets-11-1439432-g003.jpg
case_images: fig3
case_images: The traces of the left eye revealed no peaks in either series of stimulations, reflecting an altered functional integration within the visual pathway (Figure 3), whereas traces of the right eye were normal.
case_images: PMC11374603_02
case_images: (A) Brainstem auditory evoked response (BAER) tests of the left ear (A) and the right ear (b). Both recorded tracings exhibited a complete absence of waves III to V, suggesting a likely overall involvement of the brainstem structures, as indicated by the clinical evaluation. However, on the left side (a), there is probable involvement of the inner ear. This hearing impairment resulted in the disappearance of wave I (cranial nerve VIII) and subsequent waves in the recordings. (B) Left (c) and right (d) BAER tracks of a clinically healthy tawny owl (Strix aluco) used to compare the BAER tracks obtained from the patient. The presence of five physiological waves (I-V) is evident.
case_images: fvets-11-1439432-g004.jpg
case_images: PMC11374603_02_fvets-11-1439432-g004.jpg
case_images: fig4
case_images: As observed in Figure 4, in comparison with a physiological tracing from a healthy, captive-bred tawny owl obtained from another owner (Figure 4B), both tracings obtained were characterized by the complete absence of waves from III to V as a suspected general involvement of the brainstem structures, according to the clinical evaluation.