Related Experiment Video
Updated: Aug 28, 2025
Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
Published on: October 20, 2017
Decompression surgery for pure arterial malformations in a 15 year old with acute, progressive visual impairment:
Katsuma Iwaki1, Koichi Arimura1, Ataru Nishimura1
11Department of Neurosurgery, Kyushu University, Higashi-ku, Fukuoka, Japan; and.
Background:
The authors document the first case of pure arterial malformations (PAMs) of the posterior communicating artery (PCoA), which were successfully treated with microsurgical clipping of the main body of the PAMs. PAMs are defined as dilated, overlapping, and tortuous arteries with a coil-like appearance and/or a mass of arterial loops without any associated venous component. Although PAMs usually have a benign history and are often incidental findings, this case presented with acute progression of visual field impairment.
Observations:
Because the patient's right optic tract was affected by the loop of PAMs of the PCoA, the authors performed microsurgical clipping of the main body of the PAMs using endoscopy, which ceased the progression of symptoms without any complications.
Lessons:
There have been several reports of PAMs receiving surgical treatment for accompanying lesions. However, in this case, the lesion to the main body of PAMs was the cause of visual field impairment and was successfully treated with microsurgical clipping.
Insights
This study reports the first successful microsurgical clipping of pure arterial malformations (PAMs) in the posterior communicating artery (PCoA) causing visual impairment. The endoscopic procedure effectively treated the arterial malformation and halted symptom progression.
Area of Science:
- Neurosurgery
- Vascular Neurology
- Medical Imaging
Background:
- Pure arterial malformations (PAMs) are rare vascular anomalies characterized by dilated, tortuous arteries without venous components.
- While typically asymptomatic, this case highlights the potential for PAMs to cause acute neurological deficits, specifically visual field impairment.
- The posterior communicating artery (PCoA) was identified as the location of the PAMs in this unique presentation.
Observation:
- A patient presented with acute visual field impairment due to a PAM affecting the right optic tract.
- Endoscopic microsurgical clipping of the main body of the PCoA PAM was performed to address the neurological deficit.
Findings:
- The microsurgical clipping successfully ceased the progression of visual field impairment.
- The intervention was performed without any reported complications, demonstrating the safety and efficacy of the procedure.
Implications:
- This case establishes microsurgical clipping as an effective treatment for symptomatic PAMs of the PCoA.
- The findings suggest that prompt surgical intervention can prevent further visual deterioration in cases of PAM-induced optic tract compression.
- This successful treatment of a rare vascular lesion expands therapeutic options for complex cerebrovascular conditions.
