Читать книгу Shear's Cysts of the Oral and Maxillofacial Regions - Paul M. Speight - Страница 26

  Pathogenesis of Cysts

  The Cyst–Tumour Interface

  An Approach to the Diagnosis of Cysts of the Jaws Radiology of Cysts of the Jaws Histopathological Examination of Cysts Immunohistochemistry and Molecular Pathology

Cysts of the oral and maxillofacial regions are common and represent about 20% of all lesions encountered in an oral and maxillofacial pathology department (Jones and Franklin 2006a ,b ; discussed in Chapter 1). Clinicians are often therefore called upon to make an informed diagnosis and implement correct management. Of all the cysts discussed, those within the jaw bones are the most challenging to diagnose. Overall the most common jaw cyst is the radicular cyst, which presents as a periapical radiolucency and is probably the most common cause of a bony swelling in the tooth‐bearing areas of the jaws. The challenge is to accurately make a diagnosis and exclude other possible causes of a swelling or of a radiolucency. In most cases, a final diagnosis usually requires histological examination of the cyst, and it is the histopathologist who often takes responsibility for bringing together the clinical, radiological, and histological features and reporting the final diagnosis to the surgeon. Each cyst type has characteristic features and these are discussed and illustrated in each chapter of this book. In this chapter we consider general issues that help inform a careful and accurate approach to the diagnosis of cysts, and we summarise specific radiological and histological features that have diagnostic utility in the diagnosis of different cyst types.