Publications by authors named "Rajappa S"

Choriocarcinoma is an uncommon, highly invasive malignancy arising from the placental trophoblastic tissue. Though staging is clinical, imaging has significant role in the diagnosis, staging, prognostic risk scoring, and management of choriocarcinomas. The purpose of this article is to review the role of multimodality imaging in the diagnosis, staging, and management of choriocarcinomas in correlation with clinicopathologic findings.

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Purpose: Biliary tract cancers (BTCs) are usually diagnosed in advanced stages, where treatment options are either palliative chemotherapy and/or best supportive care. The breakthrough results of the TOPAZ-1 trial demonstrated a 24% decrease in risk of death at 2 years with the addition of durvalumab to chemotherapy.

Materials And Methods: This was a multicenter retrospective cohort study conducted across 14 institutions in India.

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The pressing issue of food security amid climate change necessitates innovative agricultural practices, including advanced plant genetic engineering techniques. Efficient delivery of biomolecules such as DNA, RNA, and proteins into plant cells is essential for targeted crop improvements, yet traditional methods face significant barriers. This review discusses the multifaceted challenges of biomolecule delivery into plant cells, emphasizing the limitations of conventional methods.

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  • Tuberculosis (TB) can infect various body parts, including the musculoskeletal system, but its symptoms often resemble other conditions, making diagnosis challenging.
  • A study focused on four patients with TB in their upper extremities, highlighting the typical symptoms, diagnosis delays, and effective treatment options.
  • All patients received anti-TB drug combinations, splinting, and physiotherapy, resulting in complete recovery; timely biopsy for diagnosis was emphasized to improve treatment outcomes.
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 There is no normative study of transregional grip strength data available from India. Hence, a multicenter study is designed to obtain reference value.  This is a prospective observational study conducted as a part of the Indian normative data project of the Indian Society for Surgery of the Hand.

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 The absence of the palmaris longus (PL) varies with race. The presence of a functional flexor digitorum superficialis (FDS) of the little finger also varies widely. The aim of this study is to determine the prevalence of the absence of the PL and functional FDS of the little finger in the Indian population.

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Background: Despite genetic testing being recommended by international guidelines for the selection of targeted therapy for prostate cancer (PCa), limited data are available on genetic testing for PCa in India.

Objectives: The objective is to understand the current genetic testing practice pattern for PCa in India.

Materials And Methods: A panel of 9 experts developed and validated a premeeting online questionnaire comprising 12 objective questions.

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The global demographic and epidemiological transition have led to a rapidly increasing burden of cancer, particularly among older adults. There are scant data on the prevalence and demographic pattern of cancer in older Indian persons. This was a multicentric observational study conducted between January 2019 and December 2020.

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  • * A comprehensive literature search from 2010 onwards will be conducted across multiple databases, and studies will be selected using Rayyan software, following PRISMA guidelines and evaluated for quality with Joanna Briggs Institute tools.
  • * The findings will offer important information for healthcare providers and policymakers to develop screening guidelines for BRCA mutations in breast and ovarian cancer cases.
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A key mechanism employed by plants to adapt to salinity stress involves maintaining ion homeostasis via the actions of ion transporters. While the function of cation transporters in maintaining ion homeostasis in plants has been extensively studied, little is known about the roles of their anion counterparts in this process. Here, we describe a mechanism of salt adaptation in plants.

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Hand-foot syndrome (HFS) emerges as one of the common dermatological side effects associated with anticancer medications such as 5-fluorouracil (5-FU), capecitabine and docetaxel. This condition can be notably debilitating, exerting a predominant impact on the clinical, functional and psychosocial domains of health. With prevalence rates of HFS, ranging from 43% to 71%, there exists an unmet need among palliative care physicians to comprehend this syndrome in addressing physical, psychological dimensions and its integrated management within healthcare.

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Post-traumatic wrist flexor contracture is most commonly seen in major trauma affecting the hand, wrist, and forearm. It produces debilitating complications affecting the quality of life, often requiring multiple staged surgeries, and prolonged rehabilitation with physiotherapy to yield functional improvement. Wrist flexion contracture correction is the first surgery performed to reduce the deformity and improve the functional status of the hand.

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Purpose: Immune checkpoint inhibitors (ICIs) is the initial line of management in advanced hepatocellular carcinoma (HCC), but survivals in the real world are not known.

Materials And Methods: A retrospective study of patients with advanced HCC receiving ICIs (as first-line therapy or as later lines of therapy) across 11 Indian institutions was conducted. Patients were divided into either cohort 1 (trial-like receiving ICI as first-line therapy), with a Child Pugh score (CTP) of ≤6, an Eastern Cooperative Oncology Group performance status (ECOG PS) of 0/1, and no VP4 (main portal vein thrombosis [MPVT]) or cohort 2 (trial unlike) who did not satisfy at least one of the above criteria.

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Many Low and middle-income countries face challenges in delivering chemotherapy services due to limitations in infrastructure, inadequate healthcare facilities, and a shortage of trained medical professionals. High-income countries often have well-developed healthcare systems and advanced technology.

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Purpose: With the advent of taxanes and targeted agents in neoadjuvant chemotherapy (NACT) for breast cancer, the rates for pathologic complete response (pCR) have been steadily increasing. Surgery in these women serves as a biopsy to confirm or negate a pCR.

Methods: All newly diagnosed patients with nonmetastatic breast cancer, planned for NACT, were screened.

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Background: Precise prognostication is the key to optimum and effective treatment planning for early-stage hormone receptor (HR) positive, HER2/neu negative breast cancer patients. Differences in the breast cancer incidence and tumor anatomical features at diagnosis, pharmacogenomics data between Western and Indian women along with the vast diversity in the economic status and differences in insurance policies of these regions; suggest recommendations put forward for Western women might not be applicable to Indian/Asian women. Opinions from oncologists through a voting survey on various prognostic factors/tools to be considered for planning adjuvant therapy are consolidated in this report for the benefit of oncologists of the sub-continent, SAARC and Asia's LMIC (low and middle-income countries).

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Objective: As Asian countries transition socially and economically to higher Human Development Index (HDI) levels, cancer trends are expected to shift to those seen in the Western World. A strong correlation also exists between HDI levels and age-standardized rates (ASR) for the incidence and mortality of cancer. However, there are very few reports on the trends in Asian countries, particularly in Low and Middle-Income Countries (LMICs).

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Breast cancer is the most common cancer in urban Indian women and the second most common cancer in all Indian women. The epidemiology as well as biology of this cancer seems to be different in the Indian subcontinent when compared with the West. The lack of population-based breast cancer screening programs and delay in seeking a medical consult due to financial and social reasons, including lack of awareness and fear related to a cancer diagnosis, results in delayed diagnosis.

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Tumor profiling and targeted therapy revolutionized the treatment strategies of metastatic colorectal cancer (mCRC) in the last decade. The heterogeneity of CRC tumors plays a critical role in the development of treatment resistance, which underscores the need to understand the molecular mechanism involved in CRC to develop novel targeted therapeutic strategies. This review provides an overview of the signaling pathways driving CRC, the existing targeted agents, their limitations, and future trends.

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Introduction: Giant cell tumors of tendon sheath (GCTTS) are benign soft-tissue lesions commonly affecting the digits, which occasionally cause pressure atrophy of an adjoining bone; but perforating the cortex to expand into the medullary canal is quite uncommon. We report such a case of suspected recurrent ganglion cyst with eventually manifested as a GCTTS with an intra-osseous involvement of the capitate and hamate bone.

Case Presentation: A 28-year-old lady had been diagnosed as a case of recurrent ganglion cyst of the dorsum of the left wrist - 6 years ago and 4 years ago - both of which were confirmed histopathologically and were surgically excised.

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  • Acquired RET fusions in EGFR-mutant non-small cell lung cancer (NSCLC) can lead to resistance to EGFR inhibitors like osimertinib, and this study examines the combination treatment of osimertinib and selpercatinib for such cases.
  • A multicenter analysis included 14 patients who had advanced EGFR-mutant NSCLC with RET fusions, showing a 50% response rate and an 83% disease control rate with a median treatment duration of 7.9 months.
  • The resistance mechanisms were complex, involving various mutations and alterations, but the combination treatment was deemed feasible and beneficial, warranting further evaluation.
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Purpose: To study the demographic profile, contributing and precipitating factors, the severity of striate keratopathy and its relation with endothelial cell count, and evaluate the final treatment outcome of striate keratopathy.

Methods: This Observational: analytical cohort study was conducted on 75 patients developing striate keratopathy after MSICS in the immediate postoperative period. Demographic profile, preoperative risk factors, and intraoperative complications were evaluated retrospectively.

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Nucleophosmin (NPM1) mutation is one of the most common recurring genetic abnormalities seen in acute myeloid leukemia (AML). Immunohistochemistry serves as a cost effective and simple surrogate testing method for detection of NPM1 mutation. This study was conducted to evaluate the frequency of aberrant cytoplasmic nucleophosmin 1 expression in leukemic blast cells on formalin fixed bone marrow trephine biopsy (BMB) sections and also to correlate this data with the reference molecular method (reverse transcriptase-polymerase chain reaction; RT-PCR and gene sequencing), where available.

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  • - Surgical resection after chemotherapy is crucial for treating residual masses in metastatic testicular germ cell tumors (GCT), as leaving teratoma can lead to complications like growing teratoma syndrome.
  • - A study involving 62 testicular GCT cases examined the effectiveness of post-chemotherapy surgeries, categorizing patients based on the type of surgical procedures they underwent (group 1 and group 2).
  • - Results showed different percentages of viable tumors, necrosis, and teratoma in each group, with group 1 demonstrating better outcomes in terms of relapse-free survival compared to group 2.
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Hepatocellular carcinoma (HCC) is the most frequently diagnosed primary tumor of the liver and is usually detected as advanced disease. It is an aggressive disease that often progresses rapidly when it fails to respond to treatment. As such, patients have limited opportunities to try different subsequent-line treatment regimens.

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