Publications by authors named "Sahana Somasegar"

Since ovarian cancer typically spreads intraperitoneally or via lymphatics, a retroperitoneal duodenal obstruction is a rare presentation of ovarian cancer. Such upper gastrointestinal obstruction in a young patient is diagnostically challenging and surgically difficult to address. In this case report, we describe that in an interdisciplinary approach a Whipple pancreaticoduodenectomy could be safely implemented into the interval debulking surgery to achieve complete cytoreduction.

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Cancer outcomes are largely measured in terms of disease-free survival or overall survival, which is highly dependent on timely diagnosis and access to treatment methods available within the country's existing health care system. Although cancer survival rates have markedly led in the past few decades, any improvement in the 5-year survival of gynecologic cancers has been modest, as in the case of ovarian and cervical cancers, or has declined, as in the case of endometrial cancer. The lack of effective screening options contributes to many women presenting with advanced-stage disease and the need for radical approaches to treatment.

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• Gastric-type endocervical adenocarcinomas (GEA) are rare, aggressive cancers with limited therapeutic options. • Although therapeutic effects of PARP-inhibitors in non-BRCA-associated cancers might be limited, clinical data is sparse. • Given limited treatment options and poor prognosis of GEA, somatic mutation testing, and PARP-inhibitor maintenance can be considered.

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Article Synopsis
  • The study focused on analyzing trends in the incidence and mortality rates of ovarian, fallopian tube, and primary peritoneal cancers from 2000 to 2019 using the US SEER 17 database.
  • Overall, the findings revealed a decline in both incidence and mortality rates for these cancers during the study period, particularly for epithelial cancers.
  • The decrease was significant for high-grade and low-grade epithelial cancers, while rates for ovarian stromal and germ cell cancers remained unchanged.
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Article Synopsis
  • The study analyzed uterine cancer mortality trends in the U.S. from 1969 to 2018, focusing on age and race/ethnicity factors.
  • Uterine cancer deaths initially decreased until 1997 but saw a rise from 1997 to 2018, impacting all age groups—particularly older individuals and non-Hispanic Black women, who faced significantly higher mortality rates.
  • In recent years, the most alarming increases in mortality rates were among young non-Hispanic Black and Hispanic women, suggesting urgent attention is needed for these demographic groups.
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Purpose: The COVID-19 pandemic has created new challenges for ovarian cancer survivors. This study aims to evaluate the psychologic morbidity and alterations in medical care caused by the pandemic.

Methods: Advanced-stage ovarian cancer survivors at our institution were contacted for participation in a cross-sectional telephone-based quantitative survey study assessing pandemic-related psychologic morbidity.

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Most low-grade, early-stage endometrial endometrioid carcinomas (EEC) have an excellent prognosis; however, recurrences occur in a small subset with several studies reporting an increase in CTNNB1 exon 3 mutations in this population. Herein we evaluated 10 recurrent low-grade (FIGO 1 or 2), early-stage (FIGO IA) EECs matched to 10 nonrecurrent EECs to further characterize their clinicopathologic features and molecular phenotype. Cases were matched to controls based on size, grade, and depth of invasion.

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Objective: Molecular tumor profiling and next-generation sequencing are being increasingly utilized, but there are limited data on the therapeutic implications and potential benefits of targeted treatments. We aim to characterize gynecologic oncology patients referred for somatic tumor genetic mutation testing and assess survival outcomes, efficacy, and toxicities of those receiving targeted therapy.

Methods: We conducted a retrospective chart review of gynecologic oncology patients referred for somatic tumor testing by next generation sequencing between 1/1/2012-8/23/2019.

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Objective: Routine genetic testing for ovarian cancer and identification of germline mutations can help improve early detection of cancer as well as guide treatment. Knowledge of genetic counseling and referral rates for genetic testing has been lower for Black patients, compared to White patients. We aimed to describe the demographics and presence of germline mutations in Black individuals with ovarian, fallopian tube or peritoneal carcinoma at two large academic institutions.

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Cowden syndrome is a rare hereditary cancer syndrome characterized by a germline mutation which results in an increased risk of developing breast, thyroid, and endometrial carcinoma, as well as widespread benign hamartomas. Phyllodes tumor (PT) is a rare fibroepithelial tumor that accounts for less than 1% of all breast tumors. As mammary-type glands can be found in the anogenital region, PTs can rarely arise in this location.

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Background: Most value-based care educational interventions teach knowledge of cost but fail to recognize the interrelatedness of the Accreditation Council for Graduate Medical Education (ACGME) competencies of medical knowledge, patient care, practice-based learning and improvement, and systems-based practice.

Objective: We analyzed the impact on clinical decision-making of an educational curriculum that incorporated the spectrum of ACGME competencies.

Methods: Five didactic sessions for a gynecologic oncology fellowship were modified to incorporate cost- and value-based care considerations for each clinical topic addressed.

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Purpose: Clinical changes are best evaluated with standardized, validated outcomes, including both patient-reported outcome measures and surgeon-reported outcome measures (PROMs and SROMs). The purpose of this study was to describe the spectrum of outcome measures used in pediatric orthopaedic publications over the past 10 years and to determine the proportion that are in fact age-appropriate, validated, and appropriately applied in terms of condition and population.

Methods: The Journal of Bone and Joint Surgery, The Bone and Joint Journal, Journal of Pediatric Orthopaedics A and B, and Journal of Children's Orthopaedics were systematically searched for studies including children aged 18 and below, over a 10-year period from January 2005 to December 2014.

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Tumor microvasculature tends to be malformed, more permeable, and more tortuous than vessels in healthy tissue, effects that have been largely attributed to up-regulated VEGF expression. However, tumor tissue tends to stiffen during solid tumor progression, and tissue stiffness is known to alter cell behaviors including proliferation, migration, and cell-cell adhesion, which are all requisite for angiogenesis. Using in vitro, in vivo, and ex ovo models, we investigated the effects of matrix stiffness on vessel growth and integrity during angiogenesis.

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Histological tumor grade is a well-established marker of breast tumor aggressiveness and prognosis. A number of reproductive factors, including parity and age at first birth, have been shown to be related to breast cancer risk, but few studies have examined the association of these variables with breast cancer aggressiveness. In this study, 813 newly diagnosed breast cancer patients were surveyed for demographic and lifestyle characteristics.

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As cancer progresses, cells must adapt to a new and stiffer environment, which can ultimately alter how normal cells within the tumor behave. In turn, these cells are known to further aid tumor progression. Therefore, there is potentially a unique avenue to better understand metastatic potential through single-cell biophysical assays performed on patient-derived cells.

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Tumor cell invasion through the stromal extracellular matrix (ECM) is a key feature of cancer metastasis, and understanding the cellular mechanisms of invasive migration is critical to the development of effective diagnostic and therapeutic strategies. Since cancer cell migration is highly adaptable to physiochemical properties of the ECM, it is critical to define these migration mechanisms in a context-specific manner. Although extensive work has characterized cancer cell migration in two- and three-dimensional (3D) matrix environments, the migration program employed by cells to move through native and cell-derived microtracks within the stromal ECM remains unclear.

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