Complete cohort - Case 51 of 83
Case 60
Assigned out-of-fold recommendation
Stent-assisted coil embolization
Alternative: Coil embolization alone
View A is AP; View B is lateral, as confirmed by the data provider.
Case summary
The patient presents with a 4.8 x 8.3 mm anterior communicating artery aneurysm with flash filling across the anterior communicating artery to supply the contralateral ACA.
Image observation
On the supplied views, the aneurysm appears as a distinct, contrast-filled outpouching arising from the anterior circulation vasculature.
Model-generated clinical rationale
The assigned recommendation of stent-assisted coil embolization is likely driven by the aneurysm's wide neck dimension (4.8 mm) and its location at the anterior communicating artery, where preserving flow to adjacent branch vessels is critical. The documented flash filling to the contralateral ACA suggests complex hemodynamics that may require the structural support of a stent to maintain patency. However, the rationale is limited by the lack of specific morphological details regarding the dome-to-neck ratio or the exact angle of the neck relative to the parent vessel.
Model uncertainty
The OOF classifier showed a relatively clear preference for Stent-assisted coil embolization over Coil embolization alone, but its scores are not probabilities of clinical correctness.
Clinical uncertainty / missing factor
The most significant missing decision factor is the precise assessment of the aneurysm neck width relative to the dome and the specific involvement of perforating arteries, which are critical for determining the necessity of stent assistance.
Explicit evidence used
Anterior communicating artery aneurysm measuring 4.8 x 8.3 mm | Flash filling across the anterior communicating artery to supply the contralateral ACA