{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,18]],"date-time":"2026-09-18T11:55:37Z","timestamp":1789732537290,"version":"4.0.1"},"reference-count":21,"publisher":"Journal of Neurosurgery Publishing Group (JNSPG)","issue":"6","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JNS"],"published-print":{"date-parts":[[2016,12]]},"abstract":"\nOBJECTIVE<\/jats:title>\nContemporary treatment for paraophthalmic artery aneurysms includes flow diversion utilizing the Pipeline Embolization Device (PED). Little is known, however, about the potential implications of the anatomical relationship of the ophthalmic artery (OA) origin and aneurysm, especially in smaller aneurysms.<\/jats:p><\/jats:sec>\n\nMETHODS<\/jats:title>\nFour major academic institutions in the United States provided data on small paraophthalmic aneurysms (\u2264 7 mm) that were treated with PED between 2009 and 2015. The anatomical relationship of OA origin and aneurysm, radiographic outcomes of aneurysm occlusion, and patency of the OA were assessed using digital subtraction angiography. OA origin was classified as follows: Type 1, OA separate from the aneurysm; Type 2, OA from the aneurysm neck; and Type 3, OA from the aneurysm dome. Clinical outcome was assessed using the modified Rankin Scale, and visual deficits were categorized as transient or permanent.<\/jats:p><\/jats:sec>\n\nRESULTS<\/jats:title>\nThe cumulative number of small paraophthalmic aneurysms treated with PED between 2009 and 2015 at the 4 participating institutions was 69 in 52 patients (54.1 \u00b1 13.7 years of age) with a male-to-female ratio of 1:12. The distribution of OA origin was 72.5% for Type 1, 17.4% for Type 2, and 10.1% for Type 3. Radiographic outcome at the last follow-up (median 11.5 months) was available for 54 aneurysms (78.3%) with complete, near-complete, and incomplete occlusion rates of 81.5%, 5.6%, and 12.9%, respectively. Two aneurysms (3%) resulted in transient visual deficits, and no patient experienced a permanent visual deficit. At the last follow-up, the OA was patent in 96.8% of treated aneurysms. Type 3 OA origin was associated with a lower rate of complete aneurysm occlusion (p = 0.0297), demonstrating a trend toward visual deficits (p = 0.0797) and a lower rate of OA patency (p = 0.0783).<\/jats:p><\/jats:sec>\n\nCONCLUSIONS<\/jats:title>\nPipeline embolization treatment of small paraophthalmic aneurysms is safe and effective. An aneurysm where the OA arises from the aneurysm dome may be associated with lower rates of aneurysm occlusion, OA patency, and higher rates of transient visual deficits.<\/jats:p><\/jats:sec>","DOI":"10.3171\/2015.12.jns152499","type":"journal-article","created":{"date-parts":[[2016,3,4]],"date-time":"2016-03-04T14:58:28Z","timestamp":1457103508000},"page":"1352-1359","source":"Crossref","is-referenced-by-count":51,"title":["Pipeline Embolization Device for small paraophthalmic artery aneurysms with an emphasis on the anatomical relationship of ophthalmic artery origin and aneurysm"],"prefix":"10.3171","volume":"125","author":[{"given":"Christoph J.","family":"Griessenauer","sequence":"first","affiliation":[{"name":"Neurosurgical Service, Beth Israel Deaconess Medical Center, Harvard Medical School;"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christopher S.","family":"Ogilvy","sequence":"additional","affiliation":[{"name":"Neurosurgical Service, Beth Israel 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