Published in:
10-10-2023 | Metastasis | Review
Pachymeningeal disease: a systematic review and metanalysis
Authors:
Enrique Gutiérrez-Valencia, Irving Sánchez, Adrián Valles, Omar Díaz, Tomás F. González, Ricardo Balderrama, Jesús Fuentes, Victor Ruiz, José Rodríguez, Carlos Saavedra, Lorena Velázquez-Pulido, Eduard Cadavid, Luis E. Ayala-Hernández, Alejandro Villalvazo, Luis H. Bayardo, Kurl Jamora, Aristotelis Kalyvas, Kaiyun Yang, Barbara-Ann Millar, David B. Shultz
Published in:
Journal of Neuro-Oncology
|
Issue 1/2023
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Abstract
Background
Pachymeningeal disease (PMD) is a newly recognized pattern of brain metastasis (BrM) failure that specifically occurs following surgery with adjuvant stereotactic radiosurgery (SRS) and has unique prognostic implications relative to leptomeningeal disease (LMD). Here, we report its prevalence, prognostic implications, and associated risk factors.
Methods
A literature search was performed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses on PUBMED and Cochrane from January 2000 to June 2023.
Results
We identified 12 studies that included a total of 3992 BrM patients, 659 (16.5%) of whom developed meningeal disease (MD) following surgery plus adjuvant SRS, including either PMD or LMD. The mean prevalence of MD across studies was 20.9% (7.9–38.0%), with PMD accounting for 54.6% of this prevalence and LMD comprising the remaining 45.4%. Mean of the median overall survivals following diagnosis of PMD and LMD was 10.6 months and 3.7 months p = 0.007, respectively, a significant difference. Only 2 risk factors for PMD were reported in ≥ 2 studies and also identified as statistically significant per our meta-analysis: infratentorial location and controlled systemic disease status.
Conclusion
While PMD has a superior prognosis to LMD, it is nevertheless a critical oncologic event associated with significant mortality and remains poorly recognized. PMD is predominantly observed in patients with controlled systemic disease status and infratentorial location. Future treatment strategies should focus on reducing surgical seeding and sterilizing surgical cavities.