Many practitioner researchers strive to understand which assessment practices have the best impact on learning, but in authentic educational settings, it can be difficult to determine whether one intervention, for example the introduction of an online quiz to a course studied by diverse students, is responsible for the observed effect. This paper uses examples to highlight some of the difficult...

Il s'agit d'un patient de 59 ans, qui présentait de multiples lésions génitales évoluant depuis 2 ans. L'examen a objectivé 2 tumeurs verruqueuses superficielles, à bordure pigmentée et à surface végétante, siégeant respectivement au niveau sus-pubien et sur le pli inguinal droit; une macule pigmentée hétérogène au niveau hypogastrique, et de multiples plaques noirâtres homogènes à surface verr...

The anonymous text Ventorum situs et nomina, once held to be by Aristotle himself, gives the local names of 10 topic winds as well their directions. It is not an elaboration wind-rose that Aristotle, for example, describes in Meteor. 2.5, though many scholars have assumed this, but a presentation weather-map inhabited world (οἰκουμένη). What seems important author collecting under so much direc...

Linear porokeratosis is a genodermatosis, caused by a clonal proliferation of keratinocytes along the lines of Blaschko. This type of porokeratosis is particularly susceptible to malignant degeneration e.g. to Bowen disease, a squamous cell carcinoma (SCC) in situ with the potential for significant lateral spread. Here we report a case of linear porokeratosis on the left leg of a 56-year-old ma...

Chris Dede Graduate School of Education George Mason University Fairfax, VA 22030 (703) 993-2019 [email protected] Marilyn C. Salzman Human Factors and Applied Cognitive Psychology George Mason University Fairfax, VA 22030 (703) 352-8375 [email protected] R. Bowen Loftin Virtual Environment Technology Lab University of Houston Houston, TX 77023 (713) 743-1006 [email protected] Debra Sprague Graduate Scho...

background : seborrheic keratosis is a common, benign skin tumor. numerous reports have shown its possibility of malignant transformation. this study was designed to demonstrate the occurrence of concomitant seborrheic keratosis and skin cancers. methods : data was retrospectively reviewed from all patients with a diagnosis of seborrheic keratosis in pathology department of alzahra hospital and...

Merkel cell carcinoma (MCC) is a rare, aggressive cutaneous malignancy of the elderly and immunocompromised patients. It is occasionally found coexisting with other diseases, such as squamous cell carcinoma, basal cell carcinoma, actinic keratosis, miscellaneous adnexal tumors, and rarely Bowen disease. A 75-year-old woman presented with a 6-month history of an irregularly shaped erythematous p...

Chris Dede Graduate School of Education George Mason University Fairfax, VA 22030 (703) 993-2019 [email protected] Marilyn Salzman Department of Psychology George Mason University Fairfax, VA 22030 (703) 352-8375 [email protected] R. Bowen Loftin Virtual Environment Technology Lab University of Houston Houston, TX 77023 (713) 743-1006 [email protected] Katy Ash Department of Psychology George Mason Unive...

Extramammary Paget's disease (EMPD) is an uncommon intraepithelial adenocarcinoma, primarily affecting the apocrine-bearing skin. Bowen disease is an intraepithelial squamous cell carcinoma having the potential to become invasive carcinoma. The histopathological concomitant features between EMPD and Bowen disease have been described. One theory is that primary EMPD arises multicentrically, with...