title: Intrameningioma Metastasis: Clinical Manifestation of Occult Primary Lung Carcinoma.
abstract: We report a case of lung carcinoma metastasizing into a meningioma in a 68-year-old female, who presented with progressively worsening right-sided hemiparesis and multiple episodes of adult onset epilepsy. Magnetic resonance imaging revealed an oval-shaped extra-axial hypointense lesion with a central hyperintense nodule in the left frontal region favoring a most probable diagnosis of a meningioma. Left frontoparietal craniotomy and excision of the tumor were carried out and histopathology with hematoxylin and eosin stain revealed a meningioma with metastatic adenocarcinoma and was confirmed by immunohistochemistry. The origin of metastasis was presumed to be from the lungs. A computed tomography (CT) scan of the chest with contrast showed a 3.1 x 2.9 cm mass with spiculated margins in the left lower lobe. Fine needle aspiration cytology (FNAC) proved it to be adenocarcinoma.
authors: MBBS, FCPS, Department of Neurosurgery, Pakistan Institute of Medical Sciences, Islamabad, Pakistan.
authors: Muhammad
authors: M
authors: Nadeem
authors: Department of Neurology & Neurosurgery, Shifa Tameer-e-Millat University, Islamabad, Pakistan.
authors: Salman
authors: S
authors: Assad
authors: Department of Cardiology, Armed Forces Institute of Cardiology, Pakistan.
authors: Humaira
authors: H
authors: Nasir
authors: MBBS, FCPS Trainee, Department of Neurology, Shifa International Hospital, Islamabad, Pakistan.
authors: Salman
authors: S
authors: Mansoor
authors: MBBS, FRCS, Department of Neurosurgery, Shifa International Hospital, Islamabad, Pakistan.
authors: Innayatullah
authors: I
authors: Khan
authors: Department of Neurology, Shifa International Hospital, Islamabad, Pakistan.
authors: Hana
authors: H
authors: Manzoor
authors: Department of Neurology, Shifa International Hospital, Islamabad, Pakistan.
authors: Immad
authors: I
authors: Kiani
authors: Department of Orthopaedic Surgery, Shifa College Of Medicine, Islamabad, Pakistan.
authors: Avais
authors: A
authors: Raja
authors: Radiology, Shaukat Khanum Memorial Cancer Hospital and Research Center.
authors: Touqeer
authors: T
authors: Sulehria
keywords: lung metastases; meningioma; tumor