A serious incident involving a surgeon in Wales has raised alarms within the National Health Service (NHS) regarding patient safety protocols after a healthy portion of a cancer patient’s bowel was mistakenly removed. This case occurred when the surgeon misidentified a tattoo on the patient’s body as a marker for a cancerous growth.
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The incident forms part of a troubling report from Betsi Cadwaladr University Health Board, which oversees NHS services in North Wales. Within the past year alone, the health board documented ten so-called “never events.” These events are defined as serious, preventable medical mistakes that should never transpire in any healthcare setting.

According to reports from the BBC and local news sources, the patient had undergone a laparoscopic-assisted extended right hemicolectomy due to a diagnosis of bowel cancer. In preparation for the operation, a tattoo had been applied distal to the site of the actual tumour. However, during the surgical procedure, the surgeon faced difficulty locating both the tumour and the tattoo, which supposedly indicated where the operation should focus.
The report detailed that the surgeon instead noticed a prominent tattoo situated a few centimetres proximal to where the cancerous mass was believed to be. Misled by this marking, the surgeon erroneously deduced that it signified the location of the tumour, prompting them to carry out an extended right hemicolectomy. Consequently, an unaffected segment of the bowel was excised instead of the cancerous tissue.
In light of this disastrous error, the patient is now undergoing additional investigations in preparation for further surgical procedures. The consequences of this blunder highlight the critical need for stringent verification protocols prior to surgical interventions, particularly in cases where identifying landmarks is essential for the preservation of patient health.
Out of the ten never events reported by Betsi Cadwaladr University Health Board in the last year, five were categorised as “wrong site” surgeries, while two pertained to incorrect medical implants. Additional incidents involved foreign objects being left inside patients, such as surgical swabs, and one case of medication being incorrectly administered.
In a related occurrence, a patient at Wrexham Maelor Hospital was subjected to extreme cold treatment aimed at addressing dermatological cancer cells during a one-stop clinic visit. However, following another minor procedure on the same day, the patient indicated to a nurse that the wrong area had been treated with the cold application. This revelation necessitated that the patient return for another operation on the same day, further compounding concerns regarding procedural oversight at the facility.
The statistics reflecting these never events reveal a concerning trend; between the years 2022 and 2023, five incidents were reported, which escalated to six between 2023 and 2024, and notably, the figure reached ten in 2025 to 2026. Meanwhile, only one incident has been reported thus far in the 2026-2027 period.
Health Board representatives have been approached for additional comments regarding these incidents, but broader discussions about protocols nationwide are expected to arise as this case progresses. Stakeholders and healthcare professionals alike are keenly aware of the implications such errors can have on patient safety and trust in the healthcare system, spurring calls for rigorous system reviews and enhanced training for surgical teams.
The events underscore the essential nature of effective communication and verification in healthcare settings to prevent avoidable tragedies that could significantly impact patients and their families. The community remains hopeful that the investigation will lead to improved safeguards to ensure that such mistakes become a relic of the past, thereby preserving the integrity of healthcare services across the region.
