An inquest heard how Victoria Harrison, who was 17, died in Kettering General Hospital following routine surgery that went wrong.
Recording a narrative verdict the coroner said there had been a catalogue of fatal errors.
The family of Victoria say it's been a harrowing couple of days - hearing evidence into the inquest of her death.
Click below to see a full report from ITV Anglia's Dani Crawshaw:
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An inquest has heard how a 14-year-old girl from Norfolk took her own life after she feared a text message had ended a friendship.