Mucosal Lesions: Mucosal Lumps and Bumps with Smooth Surfaces -- Papillary Lesions -- Oral Ulcers -- White and Red Macules and Patches.-Gingival Lesions -- Pigmented Lesions. Mucosal Manifestations of Systemic Disease, Habits, and Abuses: Mucosal Manifestations of Gastrointestinal Disease -- Mucosal Manifestations of Nutritional Deficiencies -- Mucosal Manifestations of Immunosuppression -- Oral Soft Tissue Manifestations of Hematologic Abnormalities and Diseases -- Oral Manifestations of Habits and Abuses. Intraosseous lesions: Cysts and Psuedocysts -- Odontogenic tumors -- Non-Odontogenic Lesions -- Osseous Manifestations of Systemic Diseases.