Sydney College of the Arts handbook

2006 handbook for Sydney College of the Art

Data Set for the Reporting of Malignant Odontogenic Tumors Explanations and Recommendations of the Guidelines From the International Collaboration on Cancer Reporting

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Het verborgene onthuld

Contains fulltext : 27014.pdf (publisher's version ) (Open Access)18 p

Complex head and neck specimens and neck dissections. How to handle them.

Item does not contain fulltextDissecting surgical specimens from the upper aerodigestive tract is often difficult because of their complicated anatomy. The local environment dictates the routes of tumour spread and surgical margins at risk, and these features differ for various subsites within this part of the body. The examination of surgical specimens of the upper aerodigestive tract should disclose whether postoperative adjuvant treatment is needed and allow the evaluation of preoperatively performed diagnostic imaging. The aim of this article is to provide a concise guideline for the dissection of specimens from this part of the body

Juvenile trabecular ossifying fibroma: an update

Item does not contain fulltextFibro-osseous lesions are characterized by the presence of bone marrow that has changed into fibrous tissue and that contains mineralized material of varying appearances. Because of overlapping clinical, radiological, and histopathological features, their classification has evoked much discussion. The current classification recognizes fibrous dysplasia, ossifying fibroma, and osseous dysplasia. Juvenile trabecular ossifying fibroma is a rare variant of ossifying fibroma that is clinically characterized by rapid growth that may suggest malignancy. A series of 15 cases is reported with emphasis on a hitherto unnoticed histological feature that may be helpful in recognizing this lesion

Lesions of the jaws.

Item does not contain fulltextThe jaws differ in various aspects from all other bones in the skeleton. Embryologically, they are for the major part derived from migrating cells of the cranial neural crest, the so-called ectomesenchyme, and not merely from mesoderm, and they contain teeth. This latter point, especially, results in the presence of lesions that are not found in other bones, a broad variety of odontogenic cysts and tumours. They will be the major topic of this review. Other lesions, not strictly odontogenic but also mainly confined to the jaw bones, are giant cell lesions, fibro-osseous lesions, and the melanotic neuro-ectodermal tumour of infancy. They also will be included in this overview

[Dissertation 25 years later, part 2. Development of teeth and odontogenic tumors, now and then]

Item does not contain fulltextProcesses playing a role in normal odontogenesis may also occur in development of odontogenic tumours. Studying odontogenesis may shed new light on the pathogenesis of odontogenic tumours and studying odontogenic tumours may do the same for understanding normal odontogenesis. An overview is given on the developments in this field since the last 25 years. Analysis of protein and gene expression have deepened the understanding of mechanisms playing a role in odontogenesis but thus far has not contributed very much to the knowledge on the pathogenesis of odontogenic tumours

Head and Neck Pathology: SY13-1 HOW TO HANDLE LARYNGEAL SPECIMENS?

Laryngohypopharyngectomies encompass the larynx with a dorsal covering of the mucosa of the hypopharynx subdivided in left and right piriform sinus and the median postcricoid area. Cranially, the specimen may include parts of the base of the tongue and caudally a varying number of tracheal rings.Endolaryngeally, one discerns between (1) supraglottic, (2) glottis, and (3) subglottic tumors. For examination of endolaryngeal tumor position and extension, the larynx has to be opened through a median vertical dorsal incision. For hypopharyngeal cancers, the larynx should not be opened to avoid compromising assessment of tumor margins in this area.For gross sampling, specimens are cut in horizontal slices. Margin assessment depends on location: base of the tongue for supraglottis, trachea for endolarynx and postcricoid region for hypopharynx. Postcricoid cancers may extend into the adjacent cervical oesophagus. Piriform sinus cancers may extend cranially into the oropharynx or craniomedially into the supraglottic larynx, thereby crossing the aryepiglottic fold.Issues of special interest are perforation of laryngeal cartilages with extralaryngeal soft tissue spread, endolaryngeal extension of a hypopharyngeal tumor that may involve the tracheal margin and hypopharyngeal cancers growing submucosally into the caudal surgical margin through the postcricoid area. Glottic cancers may spread dorsally into the submucosal soft tissues of the postcricoid area