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Bilateral orbitomedial leucotomy for obsessive-compulsive disorder: a single-case study using positron emission
P Sachdev1, J Trollor, A Walker
1Neuropsychiatric Institute, The Prince of Wales Hospital, Randwick, New South Wales 2031, Australia. p.sachdev@unsw.edu.au
The Australian and New Zealand Journal of Psychiatry
|September 12, 2001
Summary
Neurosurgery for obsessive-compulsive disorder (OCD) significantly reduced brain metabolism in key areas, leading to sustained symptom improvement for 3 years. The patient experienced no long-term cognitive deficits.
Area of Science:
- Neuroscience
- Neurosurgery
- Psychiatry
Background:
- Obsessive-compulsive disorder (OCD) is a severe mental health condition.
- Intractable OCD cases may require advanced treatment options.
- Understanding the neurobiological underpinnings of OCD is crucial for treatment development.
Observation:
- A 37-year-old female patient with severe, treatment-resistant OCD underwent bilateral stereotactic neurosurgery.
- The surgical targets were in the frontal white matter superior to the orbito-medial cortex.
- Clinical follow-up assessed symptom severity and cognitive function.
Findings:
- The patient showed remarkable and sustained improvement in OCD symptoms for up to 3 years post-surgery.
- Positron emission tomography (PET) scans revealed significant reductions in glucose metabolism in the caudate head, anterior cingulate, orbito-medial prefrontal cortex, and thalamus shortly after surgery.
- Metabolic reductions in the anterior cingulate gyrus, caudate, and thalamus persisted at 1-year follow-up, with no observed long-term cognitive side effects.
Implications:
- This case supports models implicating cortical-subcortical circuit dysfunction in OCD.
- Neurosurgery may be a viable therapeutic option for severe and intractable OCD cases.
- Further research into neurosurgical interventions for OCD is warranted.