title: Cellular schwannoma masquerading as malignant peripheral nerve sheath tumour: a diagnostic dilemma.
abstract: We present a case of a 15-year-old girl with a pulsatile, rapidly enlarging mass at the root of the nose suspected to be malignant. Excisional biopsy showed worrisome histological features; however, a final diagnosis of cellular schwannoma was reached excluding the possibility of malignant peripheral nerve sheath tumour by histological and immunohistochemical attributes. Cellular schwannoma, a pseudosarcomatous entity, is a rare benign neoplasm that may cause bone erosion and may be mistaken for a malignancy, clinically and histologically. Diagnosis of cellular schwannoma is essential to prevent mismanagement as it never metastasises and responds to local excision as opposed to aggressive treatment required by a malignant neoplasm.
authors.affiliation: Department of Pathology, JN Medical College, Aligarh, Uttar Pradesh, India.
authors.forename: Kiran
authors.initials: K
authors.lastname: Alam
authors.forename: Anshu
authors.initials: A
authors.lastname: Jain
authors.forename: Aroonima
authors.initials: A
authors.lastname: Misra
authors.forename: A H
authors.initials: AH
authors.lastname: Khan
mesh_terms: D000293:Adolescent; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D018317:Nerve Sheath Neoplasms / Q000175:diagnosis* / Q000473:pathology; D009442:Neurilemmoma / Q000175:diagnosis* / Q000473:pathology; D009669:Nose Neoplasms / Q000175:diagnosis* / Q000473:pathology; D010524:Peripheral Nervous System Neoplasms / Q000175:diagnosis* / Q000473:pathology