Unicystic Ameloblastoma of The Mandible - A Case Report With Hemimandibulectomy.

Ameloblastoma is a true neoplasm of odontogenic epithelial origin. Its incidence, combined with its clinical behavior, makes ameloblastoma the most significant odontogenic neoplasm. Unicystic ameloblastoma refers to those cystic lesions that show clinical, radiographic or gross features of a jaw cyst but on histologic examination show a typical ameloblastomatous epithelium lining the cyst cavity, with or without luminal and/or mural tumor proliferation. As this tumor shows considerable similarities with dentigerous cysts, both clinically and radiographically the biologic behaviour of this tumor group was reviewed. Unicystic type has a considerably better overall prognosis and a much reduced incidence of recurrence compared with conventional ameloblastoma.

Acute ischemic stroke in aortic dissection: Case report and review of literature.

The estimated incidence of aortic dissection ranges from 5 to 30 cases per million per year. Nearly 38% of cases are missed at an initial presentation due to the wide range of clinical symptoms. We report a survivor of an inadvertent thrombolysis in acute ischemic stroke, secondary to aortic dissection.

Localization of impacted permanent maxillary canine using single panoramic radiograph.

Background and Objectives : The objective in localization is selection of a suitable technique which has minimal radiation dose, cost and maximum details. Panoramic radiograph, being a screening radiograph, can satisfy the above needs. Taking this into consideration, the present study was done to evaluate the reliability of panoramic radiograph in localization of impacted permanent maxillary canines by applying the criteria suggested by Chaushu et al. and by comparing it with Clark's rule. Materials and Methods : The study comprised of 114 subjects in the age group of 13-30 years of both the genders with 150 impacted canines visiting Department of Oral Medicine and Radiology during the study period. The study subjects were examined for clinically missing canine, and then confirmed with intra-oral peri-apical radiograph (IOPAR). Panoramic radiographs (for application of Chaushu et al. criteria) and IOPAR's (for application of Clark's rule) of the subjects were made and interpreted for parameters pertaining to the impacted canines. The data obtained was tabulated and subjected to statistical analysis using the statistical package for social sciences (SPSS) software. Results : Determination of the bucco-palatal position from panoramic radiographs, by applying Chaushu, et al. criteria, showed that localization in bucco-palatal position was possible for 96 of the 102 impacted canines placed in the middle and coronal zones. The remaining six impacted canines, three each in the middle and coronal zones, could not be localized as they showed overlapping in their range. By excluding them, the overall agreement worked out to be 94.11%. Localization was not possible for 48 impacted canines that lied in the apical zone. Conclusion : A single panoramic radiograph can serve as a reliable indicator for determining the bucco-palatal position of the impacted canines when they lie in the middle and coronal zones. When they lie in the apical zone it is recommended to explore their presence with other conventional or advanced imaging modalities.

Mapping of risk prone areas of kala-azar (Visceral leishmaniasis) in parts of Bihar State, India: an RS and GIS approach.

BACKGROUND & OBJECTIVES: The kala-azar fever (Visceral leishmaniasis) is continuing unabated in India for over a century, now being largely confined to the eastern part of India mainly in Bihar state and to some extent in its bordering states like West Bengal and Uttar Pradesh. Two study sites namely Patepur block in Vaishali district with high endemicity in northern part and Lohardagga block in Lohardagga district with absolute non-endemicity in southern part of Bihar were selected for the study with the following objectives : (i) to study the macro-ecosystem in relation to distribution of vector -Phlebotomus argentipes; (ii) to identify/map the risk prone areas or villages in a block for quick remedial measures; and (iii) to make use of satellite remote sensing and GIS to demonstrate the utility for rapid assessment of landuse/landcover and their relation with the incidence of kalaazar leading to the mapping of risk prone areas. METHODS: Indian Remote Sensing (IRS)-1D LISS III satellite data for the periods of March and November 2000 were analysed in Silicon graphic image processing system using ERDAS software. False color composites (FCC) were generated and landuse/landcover was assessed using Maximum likelihood supervised classification techniques based on ground truth training sets. During the study the GIS functions are used to quantify the remotely sensed landscape proportions of 5 km2 buffer surrounding each known group of villages of high occurrence of sandflies in endemic and nonendemic study sites. Instead of traditional ground based survey methods to vector surveillance, the present study used a combination of remote sensing (RS) and geographical information system (GIS) approach to develop landscape predictors of sandfly abundance-an indicator of human vector contact and as a measure of risk prone areas. RESULTS: Statistical analysis using the remotely sensed landscape variables showed that rural villages surrounded by higher proportion of transitional swamps with soft stemmed edible plants and banana, sugarcane plantations had higher sandfly abundance and would, therefore, be at higher risk prone areas for man-vector contact. INTERPRETATION & CONCLUSION: The present study clearly brought out the usefulness of satellite remote sensing technology in generating the crucial information on spatial distribution of landuse/landcover classes with special emphasis on indicator landcover classes thereby helping in prioritising the area to identify risk prone areas of kala-azar through GIS application tools.

Cytotoxic effect of 2,3-disubstituted chromanones in human cancer cell lines.

Four different synthetic compounds [3-aryl-2-(3-pyridyl)chromanones] were prepared and screened for cytotoxicity against a panel of 29 human cancer cell lines in five different concentrations separately. All compounds displayed cytotoxicity against cancer cell lines and one of them possessed cell type selectivity also.

Sublingual nifedipine and captopril in hypertensive urgencies and emergencies.

Fifty two patients of severe hypertension, diastolic blood pressure > or = 115 mmHg, with or without acute complications, were treated with sublingual nifedipine 10 mg or sublingual captopril 25 mg in a randomized prospective in patient study with careful clinical monitoring. Both the drugs were safe and effective in rapidly lowering blood pressure. Nifedipine appeared to be superior to captopril with earlier onset of action, greater magnitude of response and longer duration of action. No significant side effects were observed in either of the two groups.