Basic notions on the main procedures and techniques used in pathology (histochemistry, immunohistochemistry, immunofluorescence and basic notions in molecular pathology. In addition, they will be exposed the morphological pictures of the major non-neoplastic and neoplastic pathologies (hyperplasia, metaplasia, dysplasia, hypertrophy, pre-neoplastic and neoplastic lesions) and concepts on tumor classification, grading and staging (TNM). They will be also discussed the basic notions on odontogenic pathology and the histopathological features of the major odontogenic lesions.