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Radiologist Resigns; 3,500 Scans Being Reread

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Trillium Health of Ontario, Canada, has alerted 3,500 CT and mammography patients that it is reviewing their scans because of possible misreadings by a radiologist.

The radiologist, Ivo Slezic, MD, was trained at the University of Zagreb in Croatia and has worked at Trillium hospitals for 33 years, according to the Toronto Star. In its announcement Tuesday that Dr. Slezic’s work would be reviewed, Trillium said he had worked at Queensway Health Centre in Toronto and Mississauga Hospital in nearby Mississauga, but not Trillium’s other hospital, Credit Valley Hospital in Mississauga.

Michelle DiEmanuele, Trillium’s president and chief executive officer, told the Star:

We understand the news will be of concern for patients.

Dante Morra, MD, Trillium’s chief of staff, said Trillium’s chief of radiology found problems during a routine quality-assurance review in March. Trillium stopped Dr. Slezic from reading scans on April 1 and rescinded his privileges on May 30, Dr. Morra said. Dr. Slezic has since resigned, Dr. Morra said.

An internal review found “interpretive errors” on three CT scans, Dr. Morra said. One error caused a “clinically significant problem” that affected the patient’s treatment, he said. He declined to elaborate.

Trillium is reviewing 3,500 scans read by Dr. Slezic from April 1, 2012, through March 31, 2013. To lead a team of more than 20 radiologists doing the review, it has hired Brian Yemen, MD, chief of diagnostic imaging at Juravinski Hospital and McMaster University Medical Centre in Hamilton, Ontario.

Depending on the findings, Dr. Morra said, earlier scans read by Dr. Slezic may get a second look. The team is examining only CT scans and mammograms, Dr. Morra said, because the chief of radiology found no problems with Dr. Slezic’s interpretation of other types of images.

The Star talked to one of the affected patients, William Gavel, 66, of Mississauga. He came to Mississauga Hospital on March 7 because he was having trouble breathing. He underwent a CT lung scan, and Dr. Slezic’s report diagnosed bronchiolitis. However, after another test, a respirologist (pulmonologist) at the hospital diagnosed lung cancer. A surgeon removed the tumor, which had not metasticized.

Gavel said he didn’t know whether Dr. Slezic missed the tumor or it simply didn’t show up on the scan. His wife, Mary, a retiree who has worked in patient relations and risk management at hospitals, said, “Our concern is for other patients who might be lacking a diagnosis. They could have cancer; they could have a tumor.”

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2 Responses to “Radiologist Resigns; 3,500 Scans Being Reread”

  1. Radiology Daily»AlertArchive » Radiologist Misses 28-Year-Old’s Tumor on September 17th, 2013 at 1:52 pm

    […] had worked at hospitals owned by Trillium Health Partners of Ontario, Canada, for 33 years. As we reported Thursday, Trillium suspended Dr. Slezic on April 1 and rescinded his privileges on May 30 after a routine […]

  2. Radiology Daily»AlertArchive » Radiology Peer Review Spreads In Canada on December 4th, 2013 at 1:19 pm

    […] that it was reviewing their scans because of possible misreadings by radiologist Ivo Slezic, MD. As we reported at the time, Trillium found the problems during a routine quality-assurance […]