Browsing by Author "Dutta, P."

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    Hollow viscus perforation with gas under diaphragm: a misnomer?
    (Medip Academy, 2023-07) Dutta, P.; Wadhawan, G.; Arora, R.; Sharma, S.
    Background: Hollow viscus perforation is suspected when radiographs show the presence of gas under diaphragm and is usually an indication for surgical abdominal exploration. This is significant because in cases of hollow viscous perforation, plain radiography may be used as the first line of diagnosis. Concerns regarding diagnosing those 30% cases of hollow viscus perforation which was not detected by the plain radiography. Methods: A bound prospective study of patients who were managed for perforated hollow abdominal viscus, when no abnormality was appreciated on radiographs, confirmation was done either on the basis of clinical examination, further investigations or by exploratory laparotomy performed on basis of selection of cases. Results: Based on the study, 15 patients were found with no gas under diaphragm on radiographs and perforation was confirmed on the grounds of clinical, physical examination, further investigations or by exploratory laparotomy on basis of cases. The results obtained in the present study shows male predominance, duodenal perforation being the most common perforation amongst hollow viscus perforations and age group of 20-40 years were affected mainly. Conclusions: It is important to note that not all the cases of pneumoperitoneum indicate perforated abdominal viscus or vice versa. This study highlights the difficulty in pre-operative diagnosing pneumoperitoneum with upright chest and abdominal X-rays provided its sensitivity varied from 50-98%.
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    Lymph node metastasis after neoadjuvant chemotherapy
    (Siddharth Health Research and Social Welfare Society, 2023-02) Dutta, P.; Wadhawan, G.
    Neoadjuvant therapy refers to the systemic treatment of breast cancer prior to definitive surgical from size reduction before conservation therapy. Response to neoadjuvant chemotherapy is evaluated by the change in tumor size from pretreatment clinical and or radiologic measurement to post-treatment status. The spectrum of response to neoadjuvant chemotherapy varies from complete response, partial response, to non-response. This concept is the same in breast tumors as well as axillary lymph nodes. The presented case is a known case of Triple Negative Invasive Ductal carcinoma with Axillary involvement Right Breast since November 2020 and had undergone NeoadjuvantChemotherapy till February 2021,followed by surgical intervention in October 2022.
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    Study on Shifting Cultivation Cycle (Jhum Cycle) in Mokokchung District of Northeast India Using Multi Temporal Satellite Data
    (Ms. M. B. Mondal, 2023-10) Kalita, H. C.; Baishya, S. K.; Dutta, P.; Borah, S.; Ram, Vishram
    Shifting cultivation has a long history that predates the development of agriculture as a whole. Locally known as jhum farming in Northeast India, this system's farmers are referred to as jhummias. The strategy is based on crop planting during the wet season and cutting and burning vegetation during the dry season. After growing crops for two to three years, the land is left fallow for a number of years before being further cultivated. The locations and area under various jhum cycles are currently inadequate. This was the first attempt to use GIS and remote sensing tools to generate data on various shifting cultivation fellow cycle periods in Mokokchung district of Northeast India between 1991 and 2012. To locate moving farmed areas, IRS sensor data for the year 2002, 2005, 2008 and 2012 were used. While for the years 1991, 1993, 1994, 1996, 1997, 1999, and 2000, Land-sat TM satellite imagery was used. ERDAS envision and Arc GIS 10.0 software tool were used to determine the area under different jhum cycles, namely 20, 10, and 5 years, and to create the map. For the purpose of determining the spatial extent of the current shifting agricultural areas over the course of 20 years, visual interpretation of the images has been carried out and verified with field checking. Our findings indicate that the Northeast Indian district of Mokokchung's jhum lands declined from 8.99% to 6.31% of its overall geographic area. The highest jhum area in the research region was likewise estimated to be under 20 years cycle (817.23 ha), followed by 5 years cycle (783.02 ha), 10 years cycle (591.9 ha), and 15 years cycle (684.55 ha). A correct fallow cycle of shifting agriculture may help to increase watershed conservation while maximizing crop productivity, according to the fundamental concept of our work.