Unruptured splenic artery aneurysm
ICD-10 I72.8 · ICD-11 BD51.Y&XA0R02

Unruptured Splenic Artery Aneurysm (Type III, Non-Narrow-Necked Saccular): Surgical Management After Endovascular Embolization Did Not Achieve Complete Exclusion or Is Not Feasible

This protocol applies to unruptured splenic artery aneurysms of Type III morphology — non-narrow-necked saccular aneurysms located in the secondary branch of the splenic artery or at the splenic hilum — when prior endovascular treatment has not succeeded or cannot be performed.

Clinical Scenario
Splenic artery aneurysm with non-narrow-necked saccular morphology (Type III), situated in the secondary branch of the splenic artery or the splenic hilum — an anatomical configuration that may limit or preclude standard endovascular approaches.
Previous Treatment — Endpoint Not Reached
Endovascular isolation embolization of the aneurysm (with or without sac coil packing) was the prior treatment line. This protocol is indicated when that approach was not feasible or when complete exclusion of the splenic artery aneurysm — confirmed on immediate postoperative angiography — was not achieved.
Surgical Approach (Partial Overview)
When endovascular treatment is not feasible or has not met its endpoint, laparoscopic or open surgery can be considered. The operative approach addresses the splenic artery at the level of the aneurysm; the full procedure and the specific indications that determine its scope are detailed in the complete protocol.

Treatment goal: Complete occlusion or resection of the splenic artery aneurysm confirmed under direct visualisation.
Instant Access to Structured Evidence-Based Regimens

References

DOI: 10.1016/j.jvs.2024.05.030

Type III consists of non-narrow-necked saccular aneurysms situated in the secondary branch or splenic hilum.

If endovascular treatment is not feasible, laparoscopic or open surgery can be considered as alternatives.

Technical success was defined as complete exclusion of the aneurysm via immediate postoperative angiography and complete occlusion or resection of the aneurysm under endoscopy or direct visualization.

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