Polyp Resection - Controversial Practices and Unanswered Questions

Polyp Resection - Controversial Practices and Unanswered Questions

Detection and complete removal of precancerous neoplastic polyps are central to effective colorectal cancer screening. The prevalence of neoplastic polyps in the screening population in the United States is likely >50%. However, most persons with neoplastic polyps are never destined to develop cancer, and do not benefit for finding and removing polyps, and may only be harmed by the procedure. F...

E-Learning: some unanswered questions

Yoga: Some Unanswered Questions

Grover et al (1994) have provided an excellent and thought provoking analysis of the usefulness of yoga in treating neurotic disorders. Some questions however remain. One criticism of psychotherapy is that the criteria for the selection of suitable candidates usually identify patients with good prognostic features-patients who may improve even without any therapeutic intervention. Another criti...

Pregnancy- Some Unanswered Questions

The definition of pregnancy as the state of a female in the time interval between fertilization of her ova and the expulsion of the foetuses at term, lays focus on the maternal organism and casual thinking tends to emphasize maternal physiology and welfare. In part, this is due to the fact that the maternal organism is reasonably accessible for day to day observations and measurements which do ...

Unanswered Questions in HIV Hematology

1Division of Hematology, St. Paul’s Hospital and the University of British Columbia, 440-1144 Burrard Street, Vancouver, BC, Canada V6Z 2A5 2Centre for Lymphoma, Massachusetts General Hospital Cancer Centre and Harvard Medical School, Boston, MA 02114, USA 3Division of Hematology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, ON, Canada M4N 3M5 4Division of Hematology, St. ...