title: Hyperplastic intradiploic meningothelial tissue in the orbital roof mimicking metastatic disease.
abstract: Osteolytic lesions are highly suggestive of metastatic disease or in rare instances may result from primary extradural meningiomas. Herein, we describe a rare case of a patient who presented with a large area of osteolysis on the right orbital roof. An excisional biopsy revealed that the lesion was associated with the presence of hyperplastic intra-osseous meningothelial tissue. To our best knowledge, this is the first evidence that ectopic nonneoplastic meningothelial cells may induce osteolysis on the orbital walls.
authors: Department of Ophthalmology, School of Medicine of Ribeirão Preto, University of São Paulo, São Paulo, Brazil. aavecruz@fmrp.usp.br
authors: Antonio A V
authors: AA
authors: Cruz
authors: Laura M
authors: LM
authors: Rota
authors: Fernanda P
authors: FP
authors: Trevenzol
authors: Fernando
authors: F
authors: Chahud
authors: Gyl E
authors: GE
authors: Barros
authors: Murilo
authors: M
authors: Bicudo
mesh_terms: D000328:Adult; D001706:Biopsy; D002294:Carcinoma, Squamous Cell / Q000473:pathology; D002828:Choristoma / Q000175:diagnosis* / Q000601:surgery; D003230:Conjunctival Neoplasms / Q000473:pathology; D003937:Diagnosis, Differential; D005260:Female; D005624:Frontal Bone / Q000473:pathology*; D006801:Humans; D006965:Hyperplasia; D008279:Magnetic Resonance Imaging; D008577:Meningeal Neoplasms / Q000175:diagnosis*; D008578:Meninges / Q000473:pathology*; D008579:Meningioma / Q000175:diagnosis*; D009916:Orbital Diseases / Q000175:diagnosis* / Q000601:surgery; D010014:Osteolysis