Cancer Information and Courses from MediaLab, Inc.
These are the MediaLab courses that cover Cancer and links to relevant pages within the course.
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| Unexpected positive reactions encountered during forward ABO typing may be due to: | View Page |
| Estrogen and progesterone markers are most commonly used to provide prognostic information about: | View Page |
| Tumor markers are especially valuable when used to: | View Page |
| Tumor markers are general most valuable when used to: | View Page |
| An increase in CEA levels is most closely associated with which of the following organs: | View Page |
| What best describes the cells seen in this illustration: | View Page |
| Review 1 Rocourt J. Jacquet C. Reilly A.:
Epidemiology of human listeriosis and seafoods.
International Journal of Food Microbiology. 62:197-209, 2000While rarely diagnosed prior to 1960, more than 10,000 cases of listeriosis were recorded in the medical literature between 1960 and 1982, and thousands more have been reported annually world-wide. This widespread increase in reporting is most likely due to demographic trends and changes in food production, processing and storage, especially the extended cold food chain and the ability of Listeria monocytogenes to grow at low temperaturesL. monocytogenes is a bacterium responsible for opportunistic infections, preferentially affecting individuals whose immune system is perturbed, including pregnant women, newborns, people over 65 years, immunocompromised patients, such as cancer victims, transplant recipients, people on hemodialysis and AIDS patients.Thus, the increasing lifespan and medical progress allowing immunodeficient individuals to survive, partially explains the increasing incidence of listeriosis. Moreover, L. monocytogenes is ubiquitous and can grow at temperatures as low as 0 degrees C. At this temperature growth is very slow.The expansion of the agro-food industry, the widespread use of systems of cold storage and changes in consumers demands have led to a large increase in the pool of Listeria that can cause food-borne infections. | View Page |
| What happens after HBV infection? After the initial infecting incident, HBV enters an incubation period lasting an average of 60 to 90 days.Following this period is the onset of acute hepatitis, which inflames the liver and causes prolonged illness, often progressing to jaundice.Most infected individuals recover completely, but about 10% get chronic hepatitis, which lasts for years.
Chronic hepatitis may result in cirrhosis or liver cancer. Both are potentially fatal. | View Page |
| When is TDM Not Useful? TDM is not useful for these drugs or in these specific situations: Intracelluar drugs that need to be converted to active forms (like AZT) Drugs in which the effects last much longer than the serum concentrations of the drugs; examples include antineoplastics (cancer chemotherapies) and warfarin Narcotic pain medications where continued use can lead to tolerance such that the levels needed for pain relief in one person would be toxic to another person | View Page |
| Leukoerythroblastosis Illustrated in this field is a normoblast and a myelocyte, representing leukoerythroblastosis, a term associated with the release of immature cells from a disrupted marrow. Metastatic disease in the bone marrow, particularly in patients with primary breast or prostate cancer, is usually the culprit. Leukoerythroblastosis in the absence of anemia or thrombocytopenia is a signal to search for cancer metastic to the marrow. Nucleated RBCs were not identified on the blood smear seen here but were detected by an automated analyzer.The mortality rate of elderly patients with increased NRBCs, especially following accidents or general surgery, is greater. | View Page |
| Renal Epithelial Fragments Renal epithelial fragments of collecting duct origin are composed of three or more cuboidal cells. These fragments indicate a more severe form of renal tubule injury with basement membrane disruption. Proximal and distal convoluted tubule renal epithelial cells are not found in fragment form. In addition to the indication of severe tubule damage, proper identification of these fragments is important to avoid a false positive diagnosis of low-grade transitional cell carcinoma. Transitional cell carcinoma is a type of cancer seen in 71% of cases of malignant tumors of the ureter. | View Page |
| Match the letter representing the cell type with the condition in which increased numbers of the cell may be found in the peripheral smear. | View Page |
| A peripheral blood smear illustrated by this photograph is highly suggestive of metastatic carcinoma. | View Page |