title: Metastasis of an occult pulmonary carcinoma into meningioma: a case report.
abstract: Tumour-to-tumour metastasis is an infrequent pathological phenomenon. Meningioma is the most common intracranial tumour where metastatic deposits may be found, the majority of which arise from breast and lung cancers. We describe an unusual case of occult pulmonary carcinoma metastasis into the intracranial meningioma. A 77-year old lady presented with acutely deteriorating hemiparesis. Her previous medical history was unremarkable. Radiological imaging revealed an expansive lesion, classified as meningioma, which was located parasagittally in the right premotor area. A well-capsulated tumour attached to the dura was removed surgically. The pathological examination demonstrated a mixture of angiomatous meningioma and pulmonary adenocarcinoma. Possible explanations for the development of a composite tumour and pathophysiology are described.
authors.affiliation: Department of Neurosurgery, University Medical Centre Maribor, Ljubljanska 5, 2000, Maribor, Slovenia. jravnik@ukc.mb.si.
authors.forename: Janez
authors.initials: J
authors.lastname: Ravnik
authors.affiliation: Department of Oncology, University Medical Centre Maribor, Ljubljanska 5, 2000, Maribor, Slovenia. mravnik@ukc.mb.si.
authors.forename: Maja
authors.initials: M
authors.lastname: Ravnik
authors.affiliation: Department of Neurosurgery, University Medical Centre Maribor, Ljubljanska 5, 2000, Maribor, Slovenia. gbunc@ukc.mb.si.
authors.forename: Gorazd
authors.initials: G
authors.lastname: Bunc
authors.affiliation: Department of Pathology, University Medical Centre Maribor, Ljubljanska 5, 2000, Maribor, Slovenia. iglumbic@ukc.mb.si.
authors.forename: Ivana
authors.initials: I
authors.lastname: Glumbic
authors.affiliation: Department of Neurology, General Hospital Murska Sobota, 9000, Murska Sobota, Slovenia. tobiveres@sb.si.
authors.forename: Erzebet
authors.initials: E
authors.lastname: Tobi-Veres
authors.affiliation: Department of Oncology, University Medical Centre Maribor, Ljubljanska 5, 2000, Maribor, Slovenia. tvelnar@hotmail.com.
authors.forename: Tomaz
authors.initials: T
authors.lastname: Velnar
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000077192:Adenocarcinoma of Lung; D000368:Aged; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000473:pathology*; D008577:Meningeal Neoplasms / Q000175:diagnosis / Q000556:secondary* / Q000628:therapy; D008579:Meningioma / Q000175:diagnosis / Q000556:secondary* / Q000628:therapy