Around 18,000 cancer patients have their medical files lost every year in hospitals, according to Macmillan Cancer Support.
A poll for the charity found 11 percent of cancer patients admitted to English hospitals every year have their medical file lost by a doctor or nurse.
The charity estimates around 18,000 of the 170,000 patients admitted to hospital have their file lost, which could impact on treatment.
More top news
The group of Adelie penguins dwindled from 160,000 to 10,000 after an iceberg got stuck near their colony, scientists have found.
At least 10 people have been injured after more than 50 cars were involved in a pile-up on a busy highway in Pennsylvania.
A teenager who grew an incredible 10cm overnight after an operation to correct a curve in her spine has been given the all clear by doctors.