Elisa Skovgaard Jensen & Steen Nepper-Christensen:
Trochlearis palsy due to chronic sinusitis
Ugeskr Læger 2019;181:V11180779
Chronic rhinosinusitis and nasal polyposis are common rhinological diagnoses. Left untreated both diseases can result in visual dysfunctions because of their close proximity to orbita. We report a rare case of an isolated trochlear nerve palsy caused by chronic sinusitis and nasal polyposis. The patient was a healthy 54-year-old woman. She was successfully managed with sinus surgery and recovered fully. Despite the rare aetiology, diseases in the sinuses should be considered in the differential diagnosis of trochlear nerve palsy.