Neurointervention.  2016 Mar;11(1):59-63. 10.5469/neuroint.2016.11.1.59.

A tiny bleb at Junctional Dilatation of the Posterior Communicating Artery as a Predisposing Factor for Development of a De Novo Aneurysm

• Yang K
• Park W
• Koo HW
• Suh DC

• KMID: 2155722
• DOI: http://doi.org/10.5469/neuroint.2016.11.1.59

Abstract

Formation of de novo aneurysm from a junctional dilatation at the origin site of the posterior communicating artery (PcomA) has been rarely reported. In this case report, three females in sixth decades of age developed a de novo aneurysm from the junctional dilatation of the PComA with a tiny bleb-like lesion over 5 years after initial presentation.

Keyword

Junctional dilatation; Aneurysm; Posterior communicating artery

MeSH Terms

Aneurysm*
Arteries*
Blister*
Causality*
Dilatation*
Female
Humans

Figure

• 

  Fig. 1 A 53-year-old female (Case 1). (A) Initial 3-D rotational angiogram shows a bilobulated bleb (arrowhead) at junctional dilatation of the posterior communicating artery (PcomA). (B) Follow-up 3-D rotational angiogram obtained 5 years later shows de novo aneurysm formation at the site of the previous bleb (arrowhead).

• 

  Fig. 2 A 57-year-old female (Case 2). (A) Initial angiogram showed a tiny bleb (arrowhead) at triangular junctional dilatation of the PcomA. (B) Follow-up angiogram obtained five years later revealed a de novo aneurysm formation from a junctional dilatation at the PcomA. It located just below the clipping site of the anterior choroidal artery aneurysm.

• 

  Fig. 3 A 55-year-old female (Case 3). (A) Initial angiogram showed a bleb (arrowhead) at junctional dilatation of the PcomA. (B) Follow-up angiogram obtained five years later revealed a de novo aneurysm (arrowhead) at the site of previous bleb.

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