Middle Fossa Extension of Posterior Fossa Meningiomas is Associated with Poorer Clinical Outcomes

Authors

David Morgan, Thomas Jefferson UniversityFollow
Donald Y. Ye, MD, Thomas Jefferson UniversityFollow
Michael P. Baldassari, Thomas Jefferson UniversityFollow
Omaditya Khanna, MD, Thomas Jefferson UniversityFollow
Aria Mahtabfar, MD, Thomas Jefferson UniversityFollow
Tyler Henry, Thomas Jefferson UniversityFollow
Haley Wendt, Thomas Jefferson UniversityFollow
David W. Andrews, MD, Thomas Jefferson UniversityFollow
Christopher J. Farrell, MD, Thomas Jefferson UniversityFollow
James J. Evans, MD, Thomas Jefferson UniversityFollow
Kevin D. Judy, MD, Thomas Jefferson UniversityFollow

Document Type

Abstract

Publication Date

1-2020

Academic Year

2019-2020

Abstract

Introduction: Progression of posterior fossa meningiomas (PFMs) can lead to extension into the middle cranial fossa. Pre-operative imaging allows for quantification of middle fossa extension (MFE). We aimed to determine the clinical impact of MFE on surgical and clinical outcomes during resection of PFMs.

Methods: Craniotomies for meningiomas performed at a large single center academic institution from January 2012 to December 2018 were identified. Preoperative MRI and CT imaging was reviewed to determine the presence of MFE of posterior fossa meningiomas and correlated to post-operative outcomes.

Results: 65 PFMs were identified and mean follow-up was 28.8 ± 20.1 months. 13/65 PFMs showed MFE preoperatively. Average size of PFMs with MFE (36.1 cm ± 12.1 cm) was similar to PFMs without MFE (33.5 cm ± 9.2 cm, p > 0.05). 9/13 PFMs with MFE were petrous or petroclival, and 4/13 involved the cavernous sinus. Retrosigmoid craniotomy was the most utilized approach for both isolated PFMs (51.9%) and PFMs with MFE (76.9%). Anterior approaches were used in 2/13 PFMs with MFE. Presence of MFE was strongly associated with decreased rates of GTR (RR= 0.1; p < 0.05). MFE wasn’t associated with longer LOS or rates of readmission within 30 days of discharge, but was associated with a significantly higher rate of overall mortality at last follow-up (RR=5.3; 95%; p < 0.05).

Conclusion: PFMs with MFE are easily identifiable and are associated with decreased rates of GTR and overall prognosis and may suggest the need for anterior or combined approaches.

Recommended Citation

Morgan, David; Ye, MD, Donald Y.; Baldassari, Michael P.; Khanna, MD, Omaditya; Mahtabfar, MD, Aria; Henry, Tyler; Wendt, Haley; Andrews, MD, David W.; Farrell, MD, Christopher J.; Evans, MD, James J.; and Judy, MD, Kevin D., "Middle Fossa Extension of Posterior Fossa Meningiomas is Associated with Poorer Clinical Outcomes" (2020). Phase 1. Paper 33.
https://jdc.jefferson.edu/si_ctr_2022_phase1/33

Language

English