Benign

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Benign Malignant Tumours of Oral Cavity
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Definitions

• Neoplasia
• Difference between Hyperplasia Tumour
• Tumour is an abnormal mass of tissue, the growth
  of which exceeds and is uncoordinated with that
  of normal tissues and persists in the same
  excessive manner after cessation of stimuli which
  evoked the change. - Willis

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• Hamartoma An abnormal proliferation of tissues,
  native to that part. It is a focal malformation
  which resembles a neoplasm, grossly
  Microscopically

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• Teratoma A neoplasm composed of tissues not
  normally found in the organ, in which it arises.
  Derivatives of all three germ layers are seen.

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• Choriostoma A mass formed by maldevelopment of
  tissue, of a type not native to that site.

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• Heteroplasia Development of cytologic and
  histologic elements not native to the part.
• Metaplasia Change in tissue type after its full
  differentiation normally

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Classification of Non Odontogenic Tumours

• Epithelial
• Benign
• Papilloma
• Squamous Acanthoma
• Keratoacanthoma
• Pigmented Cell Nevus
• Premalignant
• Leukoplakia
• Leukoedema
• Intraepithelial Carcinoma or Carcinoma in situ
• Erythroplakia
• Oral Sub Mucous Fibrosis

• Malignant
• Basal Cell Carcinoma
• Epidermoid carcinoma or Squamous cell carcinoma
• Verrucous Carcinoma
• Spindle Cell Carcinoma
• Adenoid Squamous cell Carcinoma
• Lmphoepithelioma and Transitional cell carcinoma
• Malignant Melanoma

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Classification of Non Odontogenic Tumours..

• Connective Tissue
• Benign
• Fibroma
• Giant Cell Fibroma
• Peripheral Ossifying Fibroma
• Central Ossifying Fibroma
• Peripheral Giant cell Granuloma
• Central GCG
• Aneursmal Bone Cyst
• Myxoma

• Malignant
• Fibrosarcoma
• Adipose tissue
• Benign
• Lipoma
• Verruciform Xanthoma
• Malignant
• Liposarcoma

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Classification of Non Odontogenic Tumours

• Vascular Tissue
• Benign
• Hemangioma
• Hereditary Haemorrhagic Talengiectasia
• Encephalo-trigeminal Angiomatosis
• Nasopharyngeal Angiofibroma
• Lmphangioma

• Malignant
• Haemangioendothelioma
• Haemangiopericytoma
• Kaposis Sarcoma
• Cartilage tissue
• Benign
• Chondroma
• Benign Chondroblastoma
• Chondromyxoid Fibroma
• Malignant
• Chondrosarcoma

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Classification of Non Odontogenic Tumours

• Bone tissue
• Benign
• Osteoma
• Osteoid Osteoma
• Benign Osteoblastoma
• Malignant
• Osteosarcoma
• Muscle tissue
• Benign
• Leiomyoma
• Angiomyoma
• Rhabdomyoma
• Malignant
• Leiomosarcoma
• Rhabdomyosarcoma

• Lymphoid Tissue
• Malignant
• Malignant Lymphoma
• Non-Hodgkins Lymphoma
• Reticular Cell Sarcoma
• Burkitts Lymphoma
• Hodgkins Disease
• Leukaemias
• Ewings Sarcoma
• Plasma Cell Tumours
• Multiple Myeloma
• Plasmacytoma

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Classification of Non Odontogenic Tumours

• Nerve Tissue
• Benign
• Neurofibroma
• Neurolemmoma
• Malignant
• Malignant Schannoma
• Tumour Like Lesions
• Peripheral Giant Cell Granuloma
• CGCG
• Exostoses
• Pyogenic Granuloma
• Anurysmal Bone Cyst
• Traumatic Neuroma

• Tumours of Disputed Origin
• Granular Cell Myoblastoma
• Congenital Epulis
• Alveolar Soft Part Sarcoma
• Melanotic Neuroectodermal tumour of infancy
• Kaposis Sarcoma
• Ewings Sarcoma