False aneurysm of the wall of a venous graft in a patient with an implanted MGuard type of coronary stent: case report and description of the microscopic changes


Authors: Tomáš Jirásek 1;  Viktor Kočka 2;  Ondrej Szárszoi 3;  Jan Pirk 3
Authors‘ workplace: Ústav patologie 3. LF UK a FNKV, Praha 1;  III. interní-kardiologická klinika 3. LF UK a FNKV, Praha 2;  Klinika kardiovaskulární chirurgie IKEM, Praha 3
Published in: Čes.-slov. Patol., 49, 2013, No. 3, p. 137-140
Category: Reviews Article

Overview

The present case report demonstrates a development of a false aneurysm in a venous coronary bypass graft wall, which developed at the previous MGuard stent implantation area in a 67-year-old patient. Subsequent histological examination revealed a false aneurysm image, without detection of vascular wall layers in its wall. Microscopically mild neointimal proliferation within the stent was also detected, with a strong granulomatous inflammatory reaction, mostly focused on the PET fibre mesh present on the surface of the stent. This article demonstrates the need for a multidisciplinary approach in dealing with pathological changes in stented blood vessels; the authors would also like to remind the public of the possibility of histological examination of stented vessels in the Czech Republic.

Keywords:
coronary bypass – pseudoaneurysm – PCI – MGuard stent – histology


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