ABSTRACT
BACKGROUND/AIMS: The vast majority of serous cystic neoplasms of the pancreas are benign, and small, asymptomatic lesions, which are generally managed with observation. However, some of these tumors may attain a large size and occasionally metastasize. METHODS: In this study, we present a 78-year-old man with serous cystadenocarcinoma of the pancreas with liver metastases treated by distal pancreatectomy and liver ablation, who went on to develop new liver metastases 5 years after the initial operation. We perform a literature review to determine the number of these malignant neoplasms previously reported and to identify features associated with malignant lesions. RESULTS: Literature reveals that metastatic serous cystadenocarcinomas of the pancreas are rare tumors, occurring in less than 3% of cases of serous cystic neoplasms. All malignant cases reported have been in tumors >4 cm in size. CONCLUSIONS: Serous cystic neoplasms of the pancreas >4 cm have malignant potential and therefore should be considered for surgical management.
Subject(s)
Cystadenocarcinoma, Serous/secondary , Cystadenocarcinoma, Serous/surgery , Liver Neoplasms/surgery , Pancreatic Neoplasms/pathology , Pancreatic Neoplasms/surgery , Aged , Catheter Ablation , Cystadenocarcinoma, Serous/diagnostic imaging , Humans , Liver Neoplasms/diagnostic imaging , Liver Neoplasms/secondary , Male , Pancreatectomy , Pancreatic Neoplasms/diagnostic imaging , Tomography, X-Ray Computed , Tumor BurdenABSTRACT
Health and medical research has played an important role in improving the life of Australians since before the 20th century, with many Australian researchers contributing to important advances both locally and internationally. The establishment of the National Health and Medical Research Council (NHMRC) to support research and to work to achieve the benefits of research for the community was significant. The NHMRC has also provided guidance in research and health ethics. Australian research has broadened to include basic biomedical science, clinical medicine and science, public health and health services. In October 2002, the NHMRC adopted Indigenous health research as a strategic priority. In 2013, government expenditure through the NHMRC was $852.9 million. This article highlights some important milestones in the history of health and medical research in Australia.
Subject(s)
Biomedical Research/history , Health Services Research/history , Australia , History, 20th Century , History, 21st Century , HumansABSTRACT
The purpose of this paper is to present a simple new method for calculating the opening angle produced by a given residual stress field in a soft biological tissue. The method uses minimization of potential energy, and is therefore named the MPE method. The accuracy of the MPE method is evaluated by comparing the opening angle it predicts to results from a finite element model of the opening angle experiment. We show that the MPE method provides good predictions of the opening angle, and that it is significantly more accurate than two other methods previously used in the literature.
Subject(s)
Computer Simulation , Connective Tissue/physiology , Models, Biological , Animals , Arteries/physiology , Elasticity , Finite Element Analysis , Models, Cardiovascular , Nonlinear Dynamics , Rats , Reproducibility of Results , Sensitivity and Specificity , Stress, MechanicalABSTRACT
In Tari, Southern Highlands Province (SHP), Papua New Guinea (PNG), pneumococcal polysaccharide (Pnc PS) vaccine was offered to women at 28-38 weeks gestation. Blood samples were collected for measurement of pneumococcal antibody titres prior to immunization, from mother and cord at delivery and from their children at ages 1-3 and 4-6 months; samples were also collected in a subset of children before and 1 month after Pnc PS vaccine was given at age 8-9 months. Serum was collected from unimmunized women and their children at delivery and from children of unimmunized women at the same ages in infancy. There were no differences in neonatal or post-neonatal mortality rates or congenital abnormalities in the children of 235 immunized and 202 unimmunized women. There was a significant increase in antibody titres to pneumococcal serotypes 5, 14 and 23F in immunized women but not for serotype 7F. Geometric mean titres (GMTs) of antibodies for serotypes 5 and 23F were significantly higher in children of immunized women than in the unimmunized group up to age 2 months and for serotype 14 significantly higher to age 4 months. Maternal immunization did not significantly affect the children's capacity to make antibody responses to immunization with Pnc PS vaccine in infancy. The findings of this study and those in several other developing countries provide support for the concept of Pnc PS maternal immunization and justify the planning of large-scale efficacy trials.
