Osteosarcoma (OS) is a primary malignant bone tumor producing osteoid or bone. It occurs less frequently in the jaws and in maxilla occurrence is rare. Jaws are less affected compared to long bones (4-13%). The mean age of occurrence is third to fourth decade. The histopathologic features of OS are highly variable. Herein, we report a rare case of a 72 year old female patient with a swelling in right posterior maxilla, whose clinical, radiographic findings were non-specific, An initial incisional biopsy confirmed neurofibroma. Later, a wide surgical excision was done as there was a spontaneous exacerbation of the growth, and histopathology report came as chondroblastic osteosarcoma.

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Introduction:Odontogenic cysts and tumors arise from the structures and remnants associated with tooth development. Cysts and tumors derived from the odontogenic tissues constitute an unusually diverse group of lesions. This diversity reflects the complex development of the dental structures, since all these lesions originate through some alteration from the normal pattern of odontogenesis. Cytokeratin (CK) 14 is the typical intermediary filament of odontogenic epithelium, CK 18 is the major components of the intermediate filaments of simple or single layered epithelial tissue; it is not expressed in stratified squamous epithelium. The present study was undertaken to understand the expression pattern of these cytokeratins in dentigerous cyst, dental follicular tissue, adenomatoid odontogenic tumor (AOT) and unicystic ameloblastoma.Materials and Methods:The present study consists of 60 specimens consisting of 20 samples of Dentigerous cyst, 20 samples of Reduced enamel epithelium/dental follicles, 10 samples of Follicular type of AOT, 10 samples of unicystic ameloblastoma. The sections of these specimens were stained for CK 14 and CK 18. The number of cells positive for CK 14 and CK 18 was counted per 100 cells. The cells were counted in four randomly selected high-power fields and the mean was calculated. Scoring of cytokeratin 14 expressions was done using Remmele score.Results:The highest expression of cytokeratin 14 was noted in AOT, least was seen in dental follicle/Reduced enamel epithelium (REE). CK18 was negative in all the cases included in the present study.Conclusion:In the present study, the expression of CK14 was noted in AOT, Dentigerous cyst (DC), Unicystic Ameloblastoma (UCA) and Dental follicle/REE. The expressions between these lesions were compared. These expression pattern may provide an insight to the histogenesis of AOT.

ABSTRACT:Bilateral ovarian torsion is a rare event with only a few cases reported in literature in women using ovarian stimulation drugs and in pre-menarchal age group with synchronous and asynchronous ovarian tumors. We hereby present a case of bilateral ovarian torsion in a 16 year old girl who presented as an acute pain abdomen and was diagnosed intra operatively.

An infected urachal cyst is one among the spectrum of presentations of urachal pathology, which are rare in adulthood. It occurs in a 2: 1 male to female ratio with an incidence of about 2% in adults. Patients with infected urachal cysts can present with a wide range of symptoms, most commonly abdominal pain, fever, umbilical discharge and the feeling of a midline mass Treatment is initiated with intravenous antibiotics followed by complete excision of the umbilicovesical tract including a cuff of bladder.