Researchers studying prostate cancer discovered three cases of biopsy sample misidentification over two years, according to a 2011 research paper.

Cassandra Barksdale alleges that a tissue sample was mishandled by Kaiser Permanent after she sought help with abnormal bleeding, leading to the removal of her uterus and ovaries.

A Georgia woman says she was wrongly diagnosed with aggressive cancer due to a labeling error and underwent an unneeded hysterectomy