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The aim of the study was to assess the mid-term effectiveness and safety of an original technique consisting of reconstructing fractures of the medial wall of the orbit with porous polyethylene implants with an exclusive transnasal approach. Twenty-five patients were treated. Each patient underwent a pre-operative ophthalmologic evaluation and a CT scan. The surgery started with an anteroposterior ethmoidectomy of the fractured side; all the fractured bone fragments were removed and all usual landmarks of healthy bony margins were identified. A Medpor sheet was placed endoscopically to reconstruct the fractured wall. Each patient received an immediate postoperative CT scan, and was evaluated at day 1, 7, 30 and 6 months after surgery clinically and with an endoscopic examination. In all patients, preoperative enophthalmos and/or diplopia were corrected. The CT scans showed excellent reconstruction of the fractured bony walls. The immediate postoperative period was characterized by a very high degree of subjective comfort. No perioperative complications were detected. At the 6 months follow up, all meshes appeared covered by epithelialized mucosa at the endoscopic inspection, and clinical results were stable. Scars or lid complications are always prevented. The technique described has become the standard to treat medial wall fractures in our department.

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Objectives: Arteriovenous malformations (AVM) are the most troublesome vascular malformations to deal with. They tend to behave like low-grade malignancies with infiltrative and disruptive growth. Crucially, the clinical course of an AVM that has been improperly managed is usually characterized by a recurrence that is much more aggressive than the original disease. As in oncology, a comprehensive staging system is highly desirable and is to date lacking in the literature. The authors present a new comprehensive staging system. Methods: A multicentric multidisciplinary team of experts in the field of vascular anomalies has created this new staging system. The SECg staging system defines the local extension of the disease (S1–S4), the vascular architecture of the malformation (E1, E2, E3), the severity of the symptoms (C0–C3) and the presence or absence of growth of the AVM (g+, g−). Results: This staging system allows to address all the aspects of AVMs and, more importantly, to help building an appropriate, individualized treatment plan for affected patients. After being staged an AVM can be defined as (a) healable, (b) healable with predicted sequelae, or (c) unhealable. Then, the SECg system allows to outline (a) absolute indications, (b) relative indications, and (c) no indications for treatment. The purpose of the treatment (radical, palliative) is furthermore taken into consideration. Conclusions: This multicentric, the SECg staging system that this multidisciplinary group of Authors has defined allows for a comprehensive staging of the disease which in turn has enabled to outline an algorithm to properly manage AVMs.