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Updated: Apr 26, 2026
Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
Published on: October 20, 2017
["True" mixed pial-dural arteriovenous malformation: a case report]
Yoshinori Maki1, Takeshi Funaki, Jun C Takahashi
1Department of Neurosurgery, Kyoto University Graduate School of Medicine.
Abstract:
Mixed pial-dural arteriovenous malformation(AVM) is currently defined as a malformation fed by both the pial and meningeal arteries. Although many cases of mixed pial-dural AVM have been reported, few papers have addressed its pathological locations. The authors report a case of a 43-year-old male patient with mixed pial-dural AVM in the occipital lobe, consisting of two distinct nidi located on the tentorium and in the cerebral parenchyma respectively. The lesions were surgically resected, and the pathological examination confirmed that both were indeed AVM. The authors discuss this rare type of AVM, focusing on the possible pathogenic mechanism thereof.
Insights
This study details a rare mixed pial-dural arteriovenous malformation (AVM) in the occipital lobe. Surgical resection confirmed two distinct AVM nidi, prompting discussion on its unique pathological location and pathogenesis.
Area of Science:
- Neurology
- Neurosurgery
- Vascular Malformations
Background:
- Mixed pial-dural arteriovenous malformations (AVMs) are defined by dual arterial supply from pial and meningeal vessels.
- While reported, the specific pathological locations of mixed pial-dural AVMs remain under-addressed in existing literature.
Observation:
- A unique case of mixed pial-dural AVM occurred in a 43-year-old male patient.
- The AVM presented with two distinct nidi: one on the tentorium and another within the cerebral parenchyma of the occipital lobe.
Findings:
- Surgical resection was performed for both AVM nidi.
- Pathological examination definitively confirmed the presence of arteriovenous malformations in both locations.
Implications:
- This case highlights a rare occipital lobe presentation of mixed pial-dural AVM.
- Further investigation into the pathogenic mechanisms of such distinct, dual-nidus AVMs is warranted.
