American Board of Surgery Qualifying Exam (ABS QE) Practice Test

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Prepare for the ABS QE with flashcards and multiple-choice questions. Each question provides hints and explanations to enhance understanding. Start your journey to becoming a certified surgeon and tackle your exam with confidence!

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Which type of endoleak involves expansion of the aneurysm without a leak?

Type 1
Type 2
Type 5
Type 4

The correct answer is: Type 5

The correct answer relates to the phenomenon known as Type 5 endoleaks, specifically referring to "endotension." In cases of Type 5 endoleak, there is a situation where an aneurysm may expand despite the absence of a detectable leak. This scenario can occur when there is persistent pressure within the aneurysm sac, leading to an increase in its diameter even though a direct leakage of blood into the sac is not identified. Type 5 endoleaks are significant because they can lead to clinical complications similar to other types of endoleaks that directly compromise the integrity of the repair. This expansion can raise concerns regarding the long-term effectiveness of the endovascular repair and may necessitate further intervention or monitoring. The other types of endoleaks describe different mechanisms of leakage or failure in the endovascular repair process. Type 1 involves a failure at the connection point between the graft and the vessel, while Type 2 encompasses retrograde flow from collateral vessels into the aneurysm sac. Type 4 refers to permeability of the graft material itself. Understanding the implications of these types helps in managing patients effectively following endovascular procedures.