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Table 1 Literature review of similar cases compared to our case

From: PICA flow-related aneurysms and posterior fossa AVM: rare association and challenging management: case presentation and review of literature

Authors

Imaging

Management

Follow-up

Khayat et al. [20]

Partially thrombosed giant right PICA aneurysm -Cerebellar AVM with a nidus < 3 cm supplied by the right PICA

Endovascular treatment of aneurysm

Treatment of AVM deferred

No complications

9-month MRI follow-up: decrease in the size of the aneurysm

David Case et al. [9]

Right distal PICA telovelotonsillar segment Aneurysm

Parent vessel sacrifice with Onyx, partial AVM embolization with Onyx

Death

Aneurysm of distal right PICA in the telovelotonsillar segment + AVM of the superior cerebellar vermis

Parent vessel sacrifice with onyx, AVM treatment deferred

Death

A small distal left PICA aneurysm in the left telovelotonsillar segment and small AVM in the vermis

Parent vessel sacrifice with NBCA and Onyx, complete AVM embolization with NBCA

No complications

Right PICA aneurysm with vermian AVM

Parent vessel sacrifice with NBCA, AVM treatment with gamma knife

No complications

Left PICA aneurysm in the telovelotonsillar segment with small AVM in the superior aspect of the vermis

·Parent vessel sacrifice with NBCA, AVM treatment deferred

No complications

Yasuda et al. [21]

Right telovelotonsillar segment and cerebellar AVM feed by the left superior cerebellar artery

Complete resection of the cerebellar AVM and clipping of the distal PICA aneurysm

No complications

Al-Jehani et al. [22]

Inferior vermian AVM with a flow-related aneurysm at the left PICA origin

Excision of AVM 24 h after glue embolization of AVM

5 years after AVM resection: regrowth of the aneurysm to 10.2 mm (which was coiled)

Nonaka et al. [23]

Two saccular aneurysms on the peripheral left PICA formed an arteriovenous shunt adjacent to the transverse sinus

Embolization of the proximal aneurysm and resection of the arteriovenous shunt lying superficially in the cerebellar hemisphere

Delayed perioperative ischemic deficit

Musluman et al. [24]

Left occipital lobe hematoma—Grade II AVM is supplied by the distal branch of the left middle cerebral artery and has drainage into the superior sagittal sinus

Saccular aneurysm on the left PICA

Drainage of the hematoma + Left parietooccipital craniotomy + Left lateral sub-occipital craniectomy + Clipping of PICA aneurysm

No complications

Our case

PFC hematoma, mass effect on the fourth ventricle—Upper vermian AVM feed by the right PICA and 2 flow-related aneurysm

Surgical exclusion of the 2 aneurysms on the distal segment of the PICA

AVM referred for SRS

No complications at 6 months follow-up