Abstract
Introduction We report 30 cases of nonmeningothelial dural-based lesions encountered during a
3-year study period.
Materials and Methods We retrospectively reviewed pathology records of patients operated for extra-axial,
dural-based lesions during the years 2016 to 2018 and included nonmeningothelial lesions
as a part of this study.
Results Among the 3,243 neurosurgical specimens for histopathologic examination, only 30
(0.93%) were “nonmeningothelial dural-based lesions.” Six (20%) patients were in the
pediatric age group. Pathologic assessment identified 13 cases of solitary fibrous
tumor/hemangiopericytoma (43.3%) and 7 cases of Ewing's sarcoma/primitive neuroectodermal
tumor (23.3%). Two cases (6.7%) were of metastasis. Other lesions included a single
case each of non-Hodgkin's lymphoma, undifferentiated sarcoma, solitary plasmacytoma,
and granulocytic sarcoma. Nonneoplastic lesions included two cases each of Rosai–Dorfman
disease and nonspecific inflammatory lesions.
Conclusion Nonmeningothelial dural-based lesions being rare, thorough examination of morphological
features is a must by the pathologist, to arrive at the accurate diagnosis. Ancillary
tests, if required, should be employed in the context of the morphologic picture.
Keywords
dura - extra-axial - infectious - neoplastic - nonmeningothelial
