An unusual case of Oral submucous fibrosis and concomitant occurrence of oral lichen planus in a 18 year old male patient is presented. These conditions are defined and the clinical features on histopathology are discussed.

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Histoplasmosis is a granulomatous fungal disease caused by the dimorphic fungus Histoplasma Capsulatum, which was first described by Samuel Darling of Panama in 1905. The clinical presentation of Histoplasmosis is varied, ranging from the more common asymptomatic form to the rare and potentially fatal disseminated form. The disseminated form usually occurs in infants, elderly and immunocompromised individuals including those infected with HIV Oral lesions of Histoplasmosis are quite rare. When encountered, they are usually found in association with the disseminated form of the disease. However cases of isolated Oral Histoplasmosis without systemic or pulmonary involvement have also been reported. Here we report one such case of isolated Oral Histoplasmosis occuring in a 28 year old HIV infected male who visited the Department of Oral Medicine & Radiology, J.S.S. Dental College & Hospital, Mysore.

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Tuberculous lesions of oral cavity had become so infrequent that it was virtually a forgotten disease entity but now due to increased prevalence of immunodefiency, incidence of tuberculous lesion has also increased. We report two cases, primary and secondary tuberculosis of oral mucosa presenting with history and clinical findings. We emphasize on early detection of and treatment of the same.

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Epulis (localised gingival growth) is a common occurrence in the oral cavity. Since the complete gingival mucosa is a seat for trauma and/or irritation, no area in the oral cavity is immune to the occurence of epulides. This article presents a case of epulis in a 27 years old male, which appeared as a smooth gingival swelling clinically, but showed histopathological features of a well differentiated squamous cell carcinoma.

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Ameloblastic carcinoma is a rare odontogenic tumor in which there is histological evidence of malignancy in the primary or recurrent tumour, regardless of whether it has metastasized. The accurate diagnosis of this tumour is important as it resembles clinically and histologically a host of other entities. We present a case of ameloblastic carcinoma occuring in 65 years old male and discuss other lesions which may mimic ameloblastic carcinoma.

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Lipoma is a benign, slowly growing encapsulated neoplasm, composed of matured fat cells that occurs with relatively rare frequency in oral cavity. According to the reported cases, the involved sites in order of frequency are buccal mucosa, tongue, floor of the mouth, huccal sulcus & vestibule, lips, palate & gingiva. Clinically, it appears as a pedunculated or sessile and usually as a solitary tumor with overlying mucosa normal. Its consistency varies from soft to firm and in some cases so firm that pseudofluctuancy can be elicited. Histologically it is composed predominantly of matured adipocytes admixed with collagenic streaks and is often well demarcated from surrounding tissue. A case of Lipoma of left buccal vestibule is presented in a 40 years male patient. Clinically, it was presented with a painless, dome shaped, small swelling with normal overlying mucosa. Fluctuation was elicited in this case. The lesion was completely excised under local anesthesia and histopathological examination was done. Thus a case of oral lipoma involving buccal vestibule is presented which can be included as a rare possibility in the differential diagnosis of various swellings of buccal vestibule.

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Lung is by far the most common site for distant metastases from head and neck cancer, accounting for 2.98%` in clinical settings to 37.2%S0 at autopsy. Since, pulmonary metastases produces very few signs and symptoms,(Sun D.X 1992) 6G such metastases influence the treatment and prognosis of the disease process. In life, the detection of pulmonary metastases depends largely on radiographic examination. Routine chest radiographs are the most common way of detecting metastatic disease (Crow 1981) 53. This study attempts to find the clinical prevalence of lung metastases from head and neck cancer in general and oral cavity in particular, using chest radiographs and review the selected related literature.

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MRI is the most recent imaging modality since 1984 that has been shown to posess a good capability for diagnosing the Tempero Mandibular Joint disc, its derangement and other structural changes of the joint. MRI is unique since there is no associated radiologic risk. The purpose and aim of this study is to determine whether it is possible to improve image quality by setting the scanning plane in oblique sagittal and coronal instead of in the orthogonal planes and to identify the position of the discs in symptomatic and asymptomaticTMJ. MRI was performed on symptomatic and asymptomatic individuals using B'lscint 0.5 tesla MRI machine. Pairs of oblique and orthogonal images were obtained and evaluated. Finding of this study showed superior image quality in oblique scanning planes of TMJ compare to orthogonal planes. Conclusion of this study showed improved diagnostic quality of the images of TMJ obtained in oblique scanning planes.

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