Cancer Diagnosis Errors May Cause ‘Harm’
10/17/2005 Pittsburgh, PA Miranda Hitti WebMDHealth (mywebmd.com) The process of diagnosing cancer can be tricky, and when it goes wrong, it could impact patients, a new study shows. The report, published in Cancer, examines cancer diagnosis data from four unnamed U.S. institutions. The vast majority of cancer diagnoses had no errors. However, some errors in cancer diagnosis did show up, and experts had different opinions about how those errors might have affected patients. The researchers included Stephen Raab, MD. He works in the pathology department of the University of Pittsburgh's medical school. Diagnostic Errors The frequency of cancer diagnosis errors varied between the institutions, Raab's team notes. Errors were rare across the board. For gynecological cases, error frequency ranged from less than 2% to about 9%. For nongynecological cases, the range was nearly 5% to 12%, the researchers write. All four institutions showed a "relatively high number" of nongynecological errors from specimens taken from the urinary tract and lung, the researchers note. The Big Picture The researchers estimated how common diagnostic errors might be in the U.S., assuming similar figures nationwide. Take the Pap test, for example. The Pap test can screen for cancerous or precancerous abnormalities of the cervix, which is part of women's reproductive system. If 50 million U.S. women get Pap tests in a year, at least 150,000 of them would have a diagnostic error in their test's results, write the researchers. Or, let's say 5 million people got a nongynecological test, such as one from the [...]