Resection Of Spheno-orbital Meningiomas Research Articles

Orbital reconstruction and volume in the correction of proptosis after resection of spheno-orbital meningiomas.

The objective of this study was to evaluate the effect of reconstruction and orbital volume on the reduction of proptosis in patients undergoing resection for spheno-orbital meningiomas. Additionally, potential predictors of optimal proptosis reduction after surgery were evaluated. Patients with spheno-orbital meningiomas who underwent resection at the authors' institution between 2005 and 2020 were evaluated retrospectively. The exophthalmos index (EI) was measured on pre- and postoperative imaging to quantify proptosis and calculate the primary outcome measure of proptosis reduction. Patients were excluded if they had no preoperative proptosis (i.e., EI < 1.1), prior resection, or insufficient imaging available for analysis. Clinical and surgical characteristics were collected, including sex, extent of resection, WHO grade, and rigid orbital reconstruction, and assessed as predictors of greater proptosis reduction. Additionally, orbital volumes of the affected and contralateral orbits were measured to correlate postoperative orbital volumes with proptosis reduction. Thirty-three patients, with a mean age of 53 years, met inclusion criteria. The majority of the patients were female (23, 69.7%), and most tumors were classified as WHO grade 1 (29, 87.9%). Six patients (18.2%) underwent rigid orbital reconstruction. The mean EI across all patients decreased from 1.36 ± 0.18 to 1.19 ± 0.15 (p < 0.001). Patients who underwent reconstruction had on average a 76.4% greater reduction in the EI (p = 0.036) and a 9.1 times higher odds of achieving a normal EI (< 1.1) compared with those who did not receive reconstruction (OR 9.1, p = 0.025). Additionally, patients without residual hyperostotic bone compressing the orbit had a 2.16 times greater reduction in EI (p = 0.039). A linear relationship between orbital volume ratios (affected/unaffected orbit) and proptosis reduction was observed (p = 0.029, r = 0.529), including at ratios > 1.0. This suggests that greater orbital volumes postoperatively correlated with greater reductions in proptosis. Three factors were identified that optimize proptosis correction. First, all abnormal bone compressing the orbital contents must be removed completely. Second, rigid orbital reconstruction leads to improved proptosis correction, possibly by preventing frontal lobe and dural reconstruction from descending onto the compressed orbit. Third, aiming for an orbital volume slightly larger than the contralateral normal side leads to improved proptosis correction.

Patient-specific implants for reconstruction of orbit and skull following resection of spheno-orbital meningiomas: A two-implant concept

IntroductionThe surgical treatment of spheno-orbital meningioma (SOM) is challenging. In addition to anatomical constraints that lead to a difficult resection, the reconstruction of the resulting defect is demanding. Uniform recommendations concerning the best reconstruction technique are not available in the existing literature. We propose a novel two-piece concept for reconstructing post-ablative defects using patient-specific implants. Material and methodsBetween 2018 and 2021, seven patients underwent SOM resection using two digitally planned patient-specific implants for orbit and skull reconstruction. To analyze the accuracy of the reconstruction, preoperative plans were merged with postoperative data sets. The clinical outcome was evaluated by comparing the pre- and postoperative exophthalmos index (EI). ResultsIn all cases, adequate reconstruction and a satisfactory match between the final implant position and preoperative planning were achieved. The EI was reduced in all cases from a mean of 1.27 to 1.09 (p = 0.003). ConclusionsThe proposed concept of a two-piece reconstruction after SOM resection is an excellent way to manage the concern around post-ablative defects. The current technical conditions allow for a precise, safe, and predictable reconstruction.

Bone defect closure after resection of sphenoorbital meningioma

To summarize available modern data on bone defect closure after resection of SOM. The authors reviewed available data on bone defect closure after resection of SOM. Effectiveness of modern methods of reconstruction and safety of materials were assessed. We analyzed 96 available references. Technical features of tumor resection, materials used for bone defect closure and modern possibilities of 3D technologies in reconstructive surgery were described. The authors proposed the algorithms for selecting the materials for bone defect closure after resection of SOM. Improvement of surgical technique and development of new materials and technologies significantly improve cosmetic and functional results. A large percentage of negative ophthalmologic outcomes and high risk of complications in SOM surgery require further studies and elaboration of modern techniques.

Spheno-orbital meningiomas: Is orbit reconstruction mandatory? Long-term outcomes and exophthalmos improvement.

Background: Meningiomas correspond to one-third of all primary central nervous system tumors. Approximately 9% of them are spheno-orbital meningiomas (SOMs), presenting significant clinical symptoms as visual impairment and orbital esthetics. This article aims to evaluate exophthalmos’ improvement in a surgical series without orbital reconstruction.Methods: We consecutively included all patients diagnosed with SOM, admitted to a single institution for 10 years. Surgical resection was the standard of care, associated or not with adjuvant radiation therapy. The radiological investigation included preoperative and postoperative head CT or MRI. We quantified proptosis through imaging.Results: Forty patients composed this series, 87.5% were female. Proptosis was the most common presentation (90%), followed by decreased visual acuity (65%), motility deficit (20%), and headache (20%). Gross total resection was achieved in 65% of the procedures. In late outcomes, 78% of the patients maintained or improved visual acuity and 85% maintained or improved headache. Proptosis significantly improved after surgery and along with the follow-up (P < 0.001). Ten patients were submitted to adjuvant RT, six of them after a subtotal resection. All patients of this subgroup had proptosis. It was observed a higher frequency of worse in visual acuity in patients submitted to RT (71% vs. 28%, P = 0.038).Conclusion: Resection of SOM was sufficient to stop the evolution of visual deficit and allowed the improvement of proptosis. Orbital reconstruction does not seem to be an essential step in reducing enophthalmos.

Outcomes of surgical resection of sphenoid-orbital meningiomas with Sonopet ultrasonic aspirator

ABSTRACT Purpose: Surgical resection is the mainstay of treatment for spheno-orbital meningiomas. The Sonopet® is an ultrasonic aspirator device that provides several advantages over the traditional standard suction techniques and bone drill, including decreased collateral soft tissue damage, more precise bone removal and a clearer operative field. The purpose of the study was to examine the treatment outcomes of Sonopet®-assisted resection of spheno-orbital meningiomas. Methods: A retrospective chart review was conducted in seven patients with spheno-orbital meningioma in a single institution who underwent surgical resection with the Sonopet®. Pre-operative and post-operative data included the assessment of visual acuity, relative afferent pupillary defect (RAPD), Ishihara score, proptosis, fundus examination, computerised visual fields and the presence or absence of diplopia, headache, and other neuro-ophthalmic complications. Results: Nine Sonopet®-assisted procedures were performed on seven patients. Post-operatively, 89% of cases had stabilization or improvement of visual acuity and colour vision, whilst 29% had improved visual fields with the remainder being stable. Proptosis improved in all patients. Five of nine cases (44%) had new post-operative cranial nerve palsies, of which 75% were transient. One patient had tumour recurrence after 14 months, requiring further tumour resection and radiotherapy. Conclusion: Sonopet®-assisted resection of spheno-orbital meningiomas has comparable outcomes of visual improvement and complication rates to traditional resection techniques. Longer periods of post-operative observation and follow-up are recommended to observe long-term benefits.

Transorbital Endoscopic Eyelid Approach for Resection of Spheno-Orbital Meningiomas with Predominant Hyperostosis: Report of Two Cases and Review of the Literature

Transorbital Endoscopic Eyelid Approach for Resection of Spheno-Orbital Meningiomas with Predominant Hyperostosis: Report of Two Cases and Review of the Literature

Porous polyethylene implant reconstruction of the orbit after resection of spheno-orbital meningiomas: A novel technique

Background Spheno-orbital meningiomas (SOM) are complex tumors involving the middle cranial fossa and orbit. Following resection of these tumors, reconstruction of the orbit can be challenging. Inadequate reconstruction may lead to cosmetic deformities and functional complications. Objective The development of a technique for orbital reconstruction which is technically straightforward, cost-effective, with an excellent functional and cosmetic outcome. Technique Twelve patients with SOM each underwent a modified orbital-zygomatic craniotomy with osteotomies based on individual tumor location. After tumor resection, the lateral orbit and orbital roof, where necessary, were reconstructed using a 1 mm porous polyethylene sheet, customized to reconstruct the bony anatomy of the lateral and superior orbit and secured with 1.5 × 4 mm titanium screws into the orbital roof and rim. Results All patients demonstrated stabilization or improvement of vision and satisfactory cosmetic outcomes. One complication (surgical site infection) was noted. Follow-up imaging was obtained at regular intervals. The resection cavity was easily visualized without interference from the implant in each case. One patient developed tumor recurrence requiring re-operation 20 months after the initial procedure. Conclusions Use of a 1 mm porous polyethylene sheet for reconstruction of the lateral orbit offers an excellent functional and cosmetic outcome, does not interfere with postoperative imaging, is technically straightforward, and is cost-effective.

Reconstruction of the Orbit after Resection of Spheno-Orbital Meningiomas: A Novel Technique

Background: Spheno-orbital meningiomas (SOMs) are complex tumors involving the middle cranial fossa and orbit. With improvement in microsurgical techniques, total or near-total resection of these tumors is increasingly possible, but reconstruction of the orbit remains challenging. Inadequate reconstruction may lead to cosmetic deformities, persistent exophthalmos or enophthalmos, or limited extraocular motility. Traditional methods of reconstruction involve the use of bone autograft, titanium mesh, or customized patient-specific implants, and some surgeons advocate performing no reconstruction at all. Each of these methods has potential limitations related to technical challenges, interference with postoperative imaging, cosmetic deformities, and cost. We sought to develop a technique for orbital reconstruction that is technically straightforward and cost-effective, with an excellent functional and cosmetic outcome.

Reconstructive and Ophthalmologic Outcomes Following Resection of Spheno-Orbital Meningiomas

To assess long-term stability and aesthetic and functional outcomes of orbital reconstruction after resection of spheno-orbital meningiomas using calvarial bone grafts. A series of 21 patients were retrospectively examined after an average follow-up period of 65.6 months with regard to their personal satisfaction and also proptosis, ocular function, and reconstructive outcome. The sagittal position of the globe was analyzed by CT and MRI. Patients were treated surgically in an interdisciplinary approach between 1997 and 2006. A permanent postoperative decrease in globe protrusion of 2.7 mm on average was achieved. Most patients (76%) reported identical or improved vision, 85% were satisfied with the reconstructive result, and 55% were free of discomfort in daily life. Seven patients suffered from recurrences that were invariably accompanied by globe protrusion. Calvarial bone grafts provide good, stable long-term results in the reconstruction of orbital defects. Globe protrusion is a reliable indicator for the detection of recurrences in spheno-orbital meningiomas. Because of high recurrence rates, it is advisable to continue follow-up for 20 or more years.