SAH-DEDUCING ANEURYSM LOCATION

SUMMARY

1. Blood predominantly in the 3rd or 4th ventricle indicates a lower posterior fossa source such as PICA or vertebral artery origin

2. Blood in the anterior interhemispheric fissure: ACOM aneurysm

3. Blood in the Sylvian fissure: PCOM or MCA aneurysm



Image: Vega C, Kwoon JV, Lavine SD. Intracranial aneurysms: current evidence and clinical practice. Am Fam Physician. 2002 Aug 15;66(4):601-8. PMID: 12201551.

Reference(s)

Greenberg, M., 1997. Handbook Of Neurosurgery. 7th ed. Lakeland, Fla.: Greenberg Graphics
Quiñones-HinojosaA. (2012). Schmidek and Sweet: Operative Neurosurgical Techniques: Indications, Methods and Results. 6th ed. Saunders.
Rhoton, A.L. and Congress Of Neurological Surgeons (2003). Rhoton cranial anatomy and surgical approaches. Philadelphia: Lippincott Williams & Wilkins.