Factual and Procedural Background
The Plaintiff brought a clinical negligence claim against the Defendant for an alleged delayed diagnosis of breast cancer. The Plaintiff initially discovered a small, hard lump in her right breast in February 2011 and was referred by her GP to a breast clinic at The Hospital. She underwent clinical examination, mammogram, and ultrasound in March 2011 but no biopsy, and was reassured and discharged. By November 2013, further changes led to a re-referral and diagnosis of a large Grade II ductal carcinoma in the same breast area. The parties agreed on damages quantum, leaving breach of duty, causation, and contributory negligence to be determined at trial.
Shortly before trial, the Plaintiff applied to amend her Particulars of Claim to reflect a revised expert opinion and to add an allegation regarding failure to carry out further tissue analysis if an initial biopsy had missed the cancer. The court granted permission to amend. The Defendant denied breach of duty and causation, asserting adherence to national guidelines, and contended contributory negligence, which was later not pursued.
The trial involved evidence from the Plaintiff, the Defendant’s consultant breast surgeon, and two expert witnesses. The court heard detailed factual and expert evidence concerning the clinical findings, application of diagnostic guidelines, and the likelihood that a biopsy would have detected the cancer in 2011.
Legal Issues Presented
- Whether the Defendant breached the duty of care by failing to perform a core biopsy in March 2011.
- Whether the Plaintiff proved causation on the balance of probabilities—that is, that the delayed biopsy caused or materially contributed to harm.
- Whether the Plaintiff was contributorily negligent by delaying re-referral to the breast clinic.
- Whether the proposed amendment to the Particulars of Claim regarding further tissue analysis was permissible and relevant.
Arguments of the Parties
Plaintiff's Arguments
- The Plaintiff contended that a core biopsy should have been performed in March 2011, which would have detected the cancer at an early stage.
- The Plaintiff’s expert argued that discordance between clinical findings (a palpable lump) and imaging (which did not identify a cyst) mandated a biopsy under the national guidelines.
- The Plaintiff sought to amend the claim to include an allegation that, if an initial biopsy had missed the cancer, further tissue analysis was required to avoid diagnostic delay.
- Contributory negligence was denied, asserting the Plaintiff acted reasonably in monitoring her condition and seeking medical advice.
Defendant's Arguments
- The Defendant relied on expert evidence that no biopsy was mandated given the clinical and imaging findings and that the Defendant’s management complied with national guidelines.
- The Defendant’s expert disputed the Plaintiff’s hypothesis that the lump contained the cancer, suggesting the lump was benign fibrocystic change and that the cancer was not detectable by biopsy at that time due to its small size.
- The Defendant initially raised contributory negligence but did not press the issue at trial.
- The Defendant did not object to the amendment of the Particulars of Claim and was prepared to meet the revised case.
Table of Precedents Cited
| Precedent |
Rule or Principle Cited For |
Application by the Court |
| Bolam v Friern Management Committee [1957] 1 WLR 582 |
Establishes that a medical professional is not negligent if acting in accordance with a responsible body of medical opinion. |
The court applied the Bolam test to determine whether the Defendant’s clinical decision not to biopsy was supported by a responsible body of medical opinion. |
| Bolitho v City and Hackney Health Authority [1998] AC 232 |
Allows the court to reject expert medical opinion if it is not capable of withstanding logical analysis. |
The court considered whether the Defendant’s expert opinion was logically defensible and concluded it was, thus upholding the clinical decision not to biopsy. |
Court's Reasoning and Analysis
The court examined the factual evidence, expert opinions, and the national "Best practice diagnostic guidelines" based on the Multidisciplinary Triple Diagnostic Method involving clinical assessment, imaging, and needle biopsy. The Defendant’s expert and the treating surgeon interpreted the guidelines as not requiring biopsy given the benign clinical (P2) and imaging scores, and the absence of discordance between clinical and imaging findings. The Plaintiff’s expert argued the opposite, highlighting discordance and the need for biopsy.
The court found the Defendant’s expert and surgeon’s evidence to be more persuasive, balanced, and consistent with the guidelines and clinical practice. The court emphasized that the Plaintiff’s expert’s opinion appeared influenced by hindsight, knowing the cancer diagnosis, and that the Plaintiff’s expert failed to demonstrate that the opposing medical opinion was illogical or unreasonable.
Regarding causation, the court was not persuaded on the balance of probabilities that a biopsy in 2011 would have detected the cancer, given the small size of the tumour and the limitations of a blind biopsy. The court also found no breach of duty in the failure to perform a repeat biopsy if the initial biopsy were negative.
On contributory negligence, the court found the Plaintiff acted reasonably in monitoring symptoms and seeking medical advice, rejecting any suggestion of contributory fault.
The court granted the amendment to the Particulars of Claim as it clarified the Plaintiff’s case without prejudice to the Defendant and was consistent with the evidence to be explored at trial.
Holding and Implications
The court’s final ruling was DISMISSED.
The Plaintiff failed to establish breach of duty or causation on the balance of probabilities. The Defendant’s management was consistent with a responsible body of medical opinion and national guidelines. The Plaintiff was found blameless regarding the delay in diagnosis. There are no broader legal implications or new precedents set by this decision. The direct effect is that the claim for clinical negligence is unsuccessful.