Presentation
Postural instability and parkinsonian features
Patient Data
Age: 70 years
Gender: Female
From the case:
Hummingbird sign (midbrain)
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/76579/annotated_viewer_json?lang=us"}
Atrophy of the midbrain tegmentum with a preserved pons
From the case:
Hummingbird sign (midbrain)
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/76580/annotated_viewer_json?lang=us"}
The hummingbird sign (green dotted)
From the case:
Hummingbird sign (midbrain)
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/76581/annotated_viewer_json?lang=us"}
Atrophy of the midbrain tegmentum with a preserved pons (appearance resembling the head and body of a hummingbird)
Case Discussion
Progressive supranuclear palsy (PSP) is a neurodegenerative disorder characterized by supranuclear vertical gaze palsy, postural instability and falls, parkinsonian features, speech disturbance, and cognitive impairment. The hummingbird sign in brain MRI is an interesting radiological sign in the patients with PSP.