Clear cells can be encountered in a variety of physiological and pathological states in the oral and maxillofacial region. Sometimes their presence can worsen the prognosis of a lesion and therefore an extensive knowledge about their histopathological appearance, clinical behavior and diagnosis can help detecting and improving their prognosis.This book gives a complete classification, details on histopathological and immunohistochemical staining procedures and clinical behavior of all the clear cell lesions encountered in oral and maxillofacial region.