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THE JOURNAL OF CARDIOVASCULAR SURGERY
Rivista di Chirurgia Cardiaca, Vascolare e Toracica
Indexed/Abstracted in: BIOSIS Previews, Current Contents/Clinical Medicine, EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
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ORIGINAL ARTICLES VASCULAR PAPERS
The Journal of Cardiovascular Surgery 1999 Giugno;40(3):407-412
Inflammatory aneurysm of the abdominal aorta. A prospective clinical study
Di Marzo L., Sapienza P., Bernucci P.*, Gallo P.*, Tedesco M., Cavallaro A.
From the 1st Department of Surgery and *Pathology University of Rome "La Sapienza", Rome, Italy
Objective. This study was undertaken to investigate a consecutive series of abdominal aortic aneurysm studied with histology to highlight the etiology, the incidence, the value of preoperative studies and intraoperative findings.
Experimental design. Prospective study.
Setting. University hospital.
Patients. Between 1992 and 1994, 102 patients underwent elective surgical repair of an abdominal aortic aneurysm. The patients were prospectively divided as having an inflammatory aneurysm (IA) or an atherosclerotic aneurysm (AA) on the basis of preoperative and intraoperative findings. Further histological evaluation assigned the patients to one of the two groups.
Results. The incidence of IA was 15%. Overall, symptoms, CT scan studies, aneurysmal wall thickness, white glistening perianeurysmal fibrosis, bleeding from the aneurysmal wall and adhesion to the duodenum diagnosed 11 (73%) cases of IA. Histology showed that a granulomatous reaction against some components of the atherosclerotic plaques resulting in an auto-allergic response to this component could initiate the inflammatory process thus resulting in a progressive adventitial and peri-adventitial fibrosis with inflammation, lymphadenitis and lymphatic dilatation.
Conclusions. Preoperative and intraoperative findings underestimate the incidence of IA. Aortic resection can prevent the progression of the inflammatory process and the complications usually observed when the exposure to the allergen determines an involvement of the periaortic structures.