Non-Hodgkin's Lymphoma is the commonest among all forms of Lymphomas. It may manifest with nodal and extranodal involvement. Salivary glands, waldeyer's ring, paranasal sinuses are the common sites of extranodal involvement in the head and neck region. Gingiva, buccal mucosa and palate are the intraoral sites of extranodal involvement. Oral manifestations include painful and mobile teeth, gingival or mucosal swellings which may mimic odontogenic pathologies. Intraoral and orbital presentation of Non-Hodgkin's Lymphoma is a sign of aggressive behavior and poor prognosis. Lymphomas have a possibility of relatively early diagnosis with systematic examination of oral tissues and the head and neck region, and timely histopathological and radiological investigations.

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Osteoma is a benign osteogenic, mostly asymptomatic tumour characterized by proliferation of cancellous/compact bone. It is one of the rare entity with 0.01-0.4% prevalence, and 2.9% of all tumors; 12.1% of all benign tumors. This could be Central, Peripheral, or Extra-skeletal in location mostly occurring in the Cranio-facial bones. Peripheral osteomas are rare to occur in the jaws with predilection to mandibular lingual aspect of body, angle, and inferior border. We here report a case of 15 year boy with swelling in front of left ear. Clinical and radiographic examination brought us to a working diagnosis as Osteoma in the buccal aspect of left ramus of mandible, which is huge in size. Thorough examination is done to rule out any syndromes associated with it, such as Gardner's Syndrome. Following which surgical excision is done under general anesthesia, and an 8 months regular follow-up reveals no recurrence.