title: Fine-needle aspiration cytology of orbital meningiomas.
abstract: Meningiomas are benign tumors derived from arachnoid cells. Most commonly they arise within the cranial cavity, but they may arise extracranially in various anatomic sites. We present four cases of orbital meningiomas diagnosed on fine-needle aspiration cytology (FNAC) and confirmed on histopathology. All the cases are presented with orbital mass. FNAC smears showed classical whorling and syncytial pattern of cells, with round to oval nucleus, inconspicuous nucleoli and one each case showed intranuclear inclusion and psammoma bodies. FNAC diagnosis of such lesions is difficult, because cytological features may mimic other soft tissue lesions located in orbital region. Awareness of this entity and its cytological appearance is important to allow correct diagnosis.
authors.affiliation: Department of Cytopathology and Gynecological Pathology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, India.
authors.forename: Pallavi
authors.initials: P
authors.lastname: Agrawal
authors.forename: Pranab
authors.initials: P
authors.lastname: Dey
authors.forename: Uma Nahar
authors.initials: UN
authors.lastname: Saikia
authors.forename: Nalini
authors.initials: N
authors.lastname: Gupta
authors.forename: Srinivasan
authors.initials: S
authors.lastname: Radhika
authors.forename: Raje
authors.initials: R
authors.lastname: Nijhawan
authors.forename: Arvind
authors.initials: A
authors.lastname: Rajwanshi
mesh_terms: D044963:Biopsy, Fine-Needle / Q000379:methods*; D002467:Cell Nucleus / Q000473:pathology; D053144:Cell Nucleus Shape; D002648:Child; D003593:Cytoplasm / Q000473:pathology; D005260:Female; D015726:Giant Cells / Q000473:pathology; D006801:Humans; D008297:Male; D008577:Meningeal Neoplasms / Q000175:diagnosis*; D008579:Meningioma / Q000175:diagnosis*; D008875:Middle Aged; D009915:Orbit / Q000473:pathology; D009918:Orbital Neoplasms / Q000175:diagnosis*; D055815:Young Adult