Lopes, G. de A., Silva, L. de M., Guimarães, A.B., de Freitas, P.A., Cavalcante, L.B., Stamm, A.E.C. and Vellutini, E. de A.S. 2026. Pneumosinus Dilatans: A Case Report and Bone Analysis of a Rare Observation of its Relationship with Meningioma. Brazilian Journal of Case Reports. 6, 1 (Jul. 2026), bjcr209. DOI:https://doi.org/10.52600/2763-583X.bjcr.2026.6.1.bjcr209.