--- abstract: 'Olfactory neuroblastoma is an uncommon malignant tumor of sinonasal tract arising from the olfactory neuro epithelium. The olfactory neuroblastomas presenting with divergent histomorphologies like, epithelial appearance of cells, lacking a neuro fibrillary background and absence of rosettes are difficult to diagnose. Such cases require immunohistochemistry to establish the diagnosis. We describe the clinical features, pathological and immunohistochemical findings of grade IV Olfactory neuroblastoma in a 57 year old man' altloc: - http://www.ojhas.org/issue36/2010-4-18.htm chapter: ~ commentary: ~ commref: ~ confdates: ~ conference: ~ confloc: ~ contact_email: ~ creators_id: - ~ - ~ - ~ - vijayshankarpatho@gmail.com creators_name: - family: MN given: Vidya honourific: '' lineage: '' - family: Shivakumar given: Swarna honourific: '' lineage: '' - family: Biswas given: Siddhartha honourific: '' lineage: '' - family: S given: Vijay Shankar honourific: '' lineage: '' date: 2011-01-20 date_type: published datestamp: 2011-05-02 17:16:36 department: ~ dir: disk0/00/00/72/61 edit_lock_since: ~ edit_lock_until: 0 edit_lock_user: ~ editors_id: - BS Kakkilaya editors_name: - family: Kakkilaya given: Srinivas honourific: Dr lineage: '' eprint_status: archive eprintid: 7261 fileinfo: /style/images/fileicons/application_pdf.png;/7261/1/2010%2D4%2D18.pdf full_text_status: public importid: ~ institution: ~ isbn: ~ ispublished: pub issn: ~ item_issues_comment: [] item_issues_count: 0 item_issues_description: [] item_issues_id: [] item_issues_reported_by: [] item_issues_resolved_by: [] item_issues_status: [] item_issues_timestamp: [] item_issues_type: [] keywords: Olfactory neuroblastoma; Nasal cavity; Immunohistochemistry lastmod: 2011-05-02 17:16:36 latitude: ~ longitude: ~ metadata_visibility: show note: ~ number: 4 pagerange: ~ pubdom: TRUE publication: Online Journal of Health and Allied Sciences publisher: BS Kakkilaya refereed: TRUE referencetext: "1.\tChristopher DM Fletcher. Tumors of the upper respiratory tract. In Christopher DM Fletcher. Diagnostic histopathology of tumors. 3rd ed. Elsevier, 2007. pp 112-118.\r\n2.\tGhaffar, Shehzad, Salahuddin, et al. Olfactory neuroblastoma: a case report and review of the literature. Ear, Nose and Throat Journal. 2005 March;84(3):150-52.\r\n3.\tArafat Ayoub, Mohammed Ali Hiari. Olfactory neuroblastoma: A Case Report. Journal of Research in Medical Sciences. Dec 2005;12(2):48-50.\r\n4.\tRoasi J. Respiratory tract. In Rosai J, ed Ackerman’s Surgical Pathology. 9th ed. Elsevier 2004;Vol 1. pp 316-17.\r\n5.\tFrierson HF Jr, Ross GW, Mills SE,et al. Olfactory neuroblastoma. Additional immunohistochemical characterization. Am J Clin pathol. 1991 Jun;95(6):903. \r\n6.\tMills, Stacey EMD, Frierson, et al. Olfactory neuroblastoma: A clinicopathologic study of 21 cases. The Am J of Surg Pathol 1995;9:317-327." relation_type: [] relation_uri: [] reportno: ~ rev_number: 19 series: ~ source: ~ status_changed: 2011-05-02 17:16:36 subjects: - OJHAS succeeds: ~ suggestions: ~ sword_depositor: ~ sword_slug: ~ thesistype: ~ title: 'Olfactory Neuroblastoma: Diagnostic Difficulty' type: journale userid: 4338 volume: 9