Context:Ameloblastoma is the second most common odontogenic tumor after odontoma which occurs exclusively in the jaws and very rarely in the sinonasal cavities.Aims:The aim of the study was to determine the demographic and histopathological variations of ameloblastoma in Eastern Indian population by retrospectively comparing and evaluating diagnosed cases of ameloblastoma using different parameters.Materials and Methods:Histopathologically diagnosed cases of ameloblastoma retrieved from past records of the Department of Oral Pathology were selected for the study. Totally, 148 cases were isolated from record of previous 7 years. The patients were divided according to (a) gender, (b) age group, (c) site of the lesion and (d) histopathological types. The findings of this study were compared with those available in literature.Statistical Analysis Used:This is a retrospective study, mean and standard deviation was calculated.Results:Among 148 patients, 88 (59.45%) were male and 60 (40.55%) were female. A maximum number of cases (101 of 148) of ameloblastoma were found in the second to fourth decades of life. Mandiblular posterior region was commonly involved (48.6%). Solid/multicystic variety was found in 63.1% followed by unicystic with 21.5%. We found one case each of extraosseous and desmoplastic ameloblastoma. It was difficult for panel of experienced oral pathologists to pinpoint the exact type in 15 (10%) cases, this was due to mixture of follicular and plexiform variety with equal presence of both types of architecture, without predominance of any variety in particular.Conclusions:These data may serve as baseline information on occurrence of various histopathological types of ameloblastoma in Eastern Indian population and helps comparing it with other similar studies conducted in different geographic population.

International Journal of Case Reports and Images (IJCRI) is an international, peer reviewed, monthly, open access, online journal, publishing high-quality, articles in all areas of basic medical sciences and clinical specialties.Aim of IJCRI is to encourage the publication of new information by providing a platform for reporting of unique, unusual and rare cases which enhance understanding of disease process, its diagnosis, management and clinico-pathologic correlations.IJCRI publishes Review Articles, Case Series, Case Reports, Case in Images, Clinical Images and Letters to Editor. Website: www.ijcasereportsandimages.com Osteosarcoma of mandible: A case reportGopal Chandra Halder, Santanu Patsa, Riteshkumar Baldevbhai Jadav, Jay Gopal Ray ABSTRACT Introduction: Osteosarcoma is common primary malignancy of bone that arises from the mesenchymal cells. It is commonly seen in younger patients having average age of 15 years. Generally, it involves long bones with fastest growth rate. The exact etiology for this tumor remains to be unknown but in some cases it runs in families. Osteosarcoma involving the jaw bones is relatively less frequently seen. Generally, osteosarcomas have diverse radiological and histopathological appearances. Case Report: A 31-year-old male presented with a small asymptomatic gingival growth in the lower right posterior region for a period of 20 days. The lesion extended both on the buccal and lingual aspect of 46 and 47 regions. Conclusion:The subtle and asymptomatic clinical and radiological features of this type of lesion as seen in the present case may delay early diagnosis and poor treatment outcome. The purpose of this study was to report an osteosarcoma involving the lower jaw which presented as a soft tissue mass, mimicking an inflammatory gingival lesion.

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