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Search Results: 1 - 10 of 141 matches for " Inuganti Renuka "
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Amyloidogenic Pituitary Prolactinoma  [PDF]
Pidakala Premalatha, Inuganti Venkata Renuka, Thumma Rayapa Reddy, Akula Meghana
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2016, DOI: 10.4236/ijohns.2016.53024
Abstract: Prolactinomas are the most common benign pituitary neoplasms and the common cause of hyperprolactinemia. Most of them arise in women of reproductive age. In men, they are often functionally silent, but present with manifestations secondary to pressure effects when they become macro adenomas. We present a case of prolactinoma in a 54-year old male patient who presented with pressure effects because of the tumor, as head ache and bi-temporal hemianopsia. MRI Brain scan was done to identify the tumor. The patient underwent trans-sphenoidal resection of the pituitary macro adenoma. Histological examination revealed spheroid amyloid deposits, almost replacing the adenoma. No medical treatment was given but the tumor recurred after 6 months and a repeat surgery was done for total excision.
Metastatic myxoid liposarcoma of lung and mediastinum diagnosed by fine needle aspiration
Inuganti Renuka,Bala Saila,Bharathi Krishna
Journal of Cytology , 2011,
Abstract: Myxoid liposarcomas metastatic to lungs and mediastinum are infrequent lung neoplasms. The tumor has an aggressive course and needs to be recognized cytologically. A 60-year-old male smoker presented with gradually progressive left-sided chest pain, cough, and expectoration for the past one month. Chest radiograph and computed tomography of thorax revealed a lung mass in left apical region extending into the posterior mediastinum, which was subjected to ultrasound-guided fine needle aspiration (FNA). Smears showed a cellular tumor with ovoid to spindle shaped tumor cells in a myxoid background having a rich vascular network. The possibility of a myxoid liposarcoma metastatic to lung and mediastinum was suggested and confirmed by histopathology. A previous history of excision of a tumor in the thigh one and half years ago was present. The importance of recognizing the cytological picture by FNA is discussed.
Benign Mucinous Tumor of Ovary with a Sarcoma-Like Mural Nodule: A Case Report
Sailabala Garikaparthi,Renuka Inuganti Venkata,Krishna Bharathi Yarlagadda,Annapurna Parvatala
Case Reports in Oncological Medicine , 2012, DOI: 10.1155/2012/213765
Abstract: Sarcoma-like mural nodules occur predominantly in middle-aged women. Distinction of these lesions from true sarcomatous nodules and foci of anaplastic carcinoma is important because of the worse prognosis of these tumors in comparison with the favorable behavior of sarcoma-like mural nodules. In this report we describe the case of a 35-year-old woman with a mucinous ovarian tumor having a mural nodule in the wall.
Benign Mucinous Tumor of Ovary with a Sarcoma-Like Mural Nodule: A Case Report
Sailabala Garikaparthi,Renuka Inuganti Venkata,Krishna Bharathi Yarlagadda,Annapurna Parvatala
Case Reports in Oncological Medicine , 2012, DOI: 10.1155/2012/213765
Abstract: Sarcoma-like mural nodules occur predominantly in middle-aged women. Distinction of these lesions from true sarcomatous nodules and foci of anaplastic carcinoma is important because of the worse prognosis of these tumors in comparison with the favorable behavior of sarcoma-like mural nodules. In this report we describe the case of a 35-year-old woman with a mucinous ovarian tumor having a mural nodule in the wall. 1. Introduction Mucinous cystic tumors of ovary whether benign or malignant may be associated with sarcoma-like mural nodules (SLMNs). These nodules resemble a gingival epulis or giant cell tumor of bone and are reactive rather than neoplastic. Their distinction from true sarcomatous mural nodules and foci of anaplastic carcinoma is extremely important since each of these lesions carries a different prognosis [1]. We describe a benign ovarian mucinous tumor with SLMN. The value of immunohistochemistry (IHC) in the differential diagnosis of these lesions is discussed. 2. Case Details A 35-year-old female patient presented with lower abdominal pain for six months. On examination a swelling of 15 to 18?cms was detected. Ultrasonography revealed a right ovarian mass, and ovarian cystectomy was performed. Grossly the ovarian cyst measured with an attached tube of 3?cms. The outer surface was whitish and smooth, with an elevation of 2?cms diameter (Figure 1). On cut section the cyst was unilocular with mucinous material and a gray-brown nodule. Microscopic examination showed features of a mucinous cystadenoma, surface epithelium being papillary and lined by tall columnar mucinous epithelium. Sections from the gray-brown nodule showed increased cellularity in the stroma with spindle- and polygonal-shaped cells, and plenty of osteoclastic type of giant cells (Figure 2). The stromal cells were monomorphic with no nuclear atypia, and minimal mitotic activity (1–5/10HPF) was seen. The giant cells were similar to osteoclastic giant cells of bone (Figure 3). Immunohistochemistry for Vimentin was positive, and pancytokeratin was only focally positive. Figure 1: Ovarian tumor with mural nodule. Figure 2: Microphotograph showing cyst lining and cellular mural nodule inset: SLMN with spindle-shaped stromal cells and giant cells (H and E ×100). Figure 3: Osteoclastic type of giant cells and cellular stroma (H and E ×400). 3. Discussion Various types of mural nodules are found in the walls of mucinous ovarian tumors. They include anaplastic carcinoma, carcinosarcoma, and sarcoma-like nodules, mixed nodules, and leiomyomas [2]. We describe a benign ovarian tumor
Synthesis of C-8 alkyl xanthines by pentaamminecobalt(III) complex  [PDF]
Renuka Suravajhala
Advances in Biological Chemistry (ABC) , 2013, DOI: 10.4236/abc.2013.36058
Abstract:

Alkyl xanthines underwent selective homolytic aromatic substitution at C-8 position with alkyl groups of pentaamminecobalt(III) complex. In this process of synthesis, we used monoalkyl hydrazines as the radical source in aqueous ammonia solution. Evidence supporting coordination of the alkyl hydrazine to pentaamminecobalt(III) complex by radical trapping was in good agreement with literature. The products were characterized using GC-MS and 1H, 14N and 59Co NMR spectroscopy.

 

Sinonasal Undifferentiated Carcinoma—A Case Report  [PDF]
C. Aparna, I. V. Renuka
International Journal of Otolaryngology and Head & Neck Surgery (IJOHNS) , 2014, DOI: 10.4236/ijohns.2014.36068
Abstract: Sinonasal tumors with neuroendocrine differentiation are uncommon. They arise from schneiderian epithelium. The authors reported a case in a fifty-six years old female patient who came with complaints of headache and epistaxis. Differential diagnosis and review of literature are presented in detail. This case is presented in view of its rarity.
Mathematics, Devan, and project work
Renuka Vithal
South African Journal of Education , 2004,
Abstract: I analyse the efforts of one learner, Devan, and a student teacher, Sumaiya Desai, in whose class he participated, as she attempted to realise what may be referred to as a social, cultural, political approach to the school mathematics curriculum through the practice of project work. The focus is specifically on the actions and reflections of Devan as he participated in the project work experience and overturned his casting as a "failing" mathematics learner in a Grade 6 mathematics classroom. I theorise the practice of project work through the data related to Devan and the conceptual tools of project work: problem-orientation; participant-directed; inter-disciplinarity; and exemplarity, and use this framework to organise the structure of this paper. Through this conceptual framing, the challenges and possibilities that such classrooms pose, for learners like Devan but also for the theoretical ideas and associated practice, are made visible and I discuss the potentiality that remained unexplored. South African Journal of Education Vol.24(3) 2004: 225-232
Mathematics education, democracy and development: Exploring connections
Renuka Vithal
Pythagoras , 2012,
Abstract: Mathematics education and its links to democracy and development are explored in this article, with specific reference to the case of South Africa. This is done by engaging four key questions. Firstly, the question of whether mathematics education can be a preparation for democracy and include a concern for development, is discussed by drawing on conceptual tools of critical mathematics education and allied areas in a development context. Secondly, the question of how mathematics education is distributed in society and participates in shaping educational possibilities in addressing its development needs and goals is used to examine the issues emerging from mathematics performance in international studies and the national Grade 12 examination; the latter is explored specifically in respect of the South African mathematics curriculum reforms and teacher education challenges. Thirdly, the question of whether a mathematics classroom can be a space for democratic living and learning that equally recognises the importance of issues of development in contexts like South Africa, as a post-conflict society still healing from its apartheid wounds, continuing inequality and poverty, is explored through pedagogies of conflict, dialogue and forgiveness. Finally the question of whether democracy and development can have anything to do with mathematics content matters, is discussed by appropriating, as a metaphor, South Africa’s Truth and Reconciliation Commission’s framework of multiple ‘truths’, to seek links within and across the various forms and movements in mathematics and mathematics education that have emerged in the past few decades.
Developing Mathematical Literacy through project work: A teacher/teaching perspective
Renuka Vithal
Pythagoras , 2011, DOI: 10.4102/pythagoras.v0i64.97
Abstract: The implementation of the new Mathematical Literacy curriculum in South Africa is assuming several different conceptions of mathematics and therefore also being realised through a range of different pedagogies. In this paper I begin from a particular privileging of a critical perspective in mathematics education, which I argue is one (among others) of the forces shaping the new South African curriculum reforms, particularly the Mathematical Literacy curriculum. If so, then the case for a specific pedagogy, that of project work, can be shown to support the development of a mathematical literacy from a critical perspective. In this paper a particular set of conceptual tools, principles and practices associated with project work, as developed in the Scandanavian context but researched in South Africa, are elaborated from the perspective of teachers/teaching of mathematical literacy.
Towards a Number Theoretic Discrete Hilbert Transform
Renuka Kandregula
Computer Science , 2009,
Abstract: This paper presents an approach for the development of a number theoretic discrete Hilbert transform. The forward transformation has been applied by taking the odd reciprocals that occur in the DHT matrix with respect to a power of 2. Specifically, the expression for a 16-point transform is provided and results of a few representative signals are provided. The inverse transform is the inverse of the forward 16-point matrix. But at this time the inverse transform is not identical to the forward transform and, therefore, our proposed number theoretic transform must be taken as a provisional result.
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