10.1055/b-0034-91560 Conditions Simulating Neoplasia and Granulomatous Disorders : Part II Sinonasal Tuberculosis Definition and Etiology Infection of the nose and sinuses by Mycobacterium tuberculosis. Incidence Apart from lupus vulgaris, tuberculosis…
10.1055/b-0034-91559 Conditions Simulating Neoplasia and Granulomatous Disorders : Part I There is a range of conditions, inflammatory or infective, that may affect the sinonasal region and produce clinical features and…
10.1055/b-0034-91547 Vasoform Neoplasms and Other Lesions : Part I Hemangioma and Vascular Malformations Despite the fact that a sensible biological classification system based on studies correlating physical findings, natural history,…
10.1055/b-0034-91556 Neuroectodermal Lesions : Part III Mucosal Malignant Melanoma Definition (ICD-O code 8720/3) Mucosal malignant melanomas (MMMs) are aggressive tumors arising from melanin producing cells (melanocytes), derived from neural crest…
10.1055/b-0034-91546 Mesenchymal Neoplasms and Other Lesions Eosinophilic Angiocentric Fibrosis Definition A rare benign cause of submucosal thickening and fibrosis within the upper respiratory tract. Etiology The etiology is unknown. It…
10.1055/b-0034-91558 Metastases to the Nasal Cavity and Paranasal Sinuses Definition A malignant deposit emanating from a site outside the nose and paranasal sinuses. The majority derive from below the clavicle….
10.1055/b-0034-91557 Germ Cell Tumors Germ cell tumors are rare in the head and neck, and histologically are almost identical to those that arise in the gonads (Table 16.1). Immature Teratoma…
10.1055/b-0034-91552 Tumors and Other Lesions of Bone This section includes the following conditions: Fibrous dysplasia; no ICD-O code Ossifying fibroma; no ICD-O code Osteoma; ICD-O 9180 Osteoblastoma; ICD-O 9200/0 Osteoid…
10.1055/b-0034-91554 Neuroectodermal Lesions : Part I Primary neurogenic lesions presenting in the nose and sinuses are relatively rare but they increasingly come within the ambit of the ENT surgeon who…
10.1055/b-0034-91555 Neuroectodermal Lesions : Part II Neuroendocrine Carcinoma Carcinoid (well-differentiated neuroendocrine carcinoma) (ICD-O code 8240/3) Atypical carcinoid (moderately differentiated neuroendocrine carcinoma) (ICD-O code 8249/3) Small cell carcinoma (poorly or undifferentiated…
