A GP’s stepwise investigation of leg pain was found reasonable — even after the patient was later diagnosed with terminal lymphoma. What are the lessons for other doctors managing common symptoms?

The context

A patient in her early 50s saw her GP with worsening leg pain that interfered with her ability to walk.

During the consultation, the GP examined her and considered several possible explanations for the pain. Musculoskeletal causes appeared the most likely.

The GP arranged blood tests to investigate possible underlying causes, including iron deficiency, inflammation or muscle damage, and prescribed anti-inflammatory medication to manage the symptoms.

The blood test results arrived the following day and were within normal limits.

At that stage, no further investigations were arranged and there was no clearly documented plan for follow-up if symptoms persisted.

What happened next?

Over the following months, the patient visited the same medical practice on several more occasions. She consulted doctors at another clinic for unrelated health issues.

Clinical records from these consultations did not document complaints of leg pain.

Around 9 months later, the patient saw the original GP with worsening symptoms, including lower back and leg pain, as well as unexplained weight loss and lethargy.

The GP arranged further investigations, including imaging.

Tests revealed abnormalities in the bones of the pelvis and spine. Further scans and biopsies ultimately confirmed a diagnosis of non-Hodgkin’s lymphoma with skeletal involvement.

The patient underwent chemotherapy and initially achieved remission. However, the cancer later returned and her condition became terminal.

She subsequently brought a medical negligence claim against the original GP.

The legal claim

The patient alleged that the GP had failed to adequately investigate her symptoms during the initial consultation and should have taken further steps at that time, including:

• arranging imaging
• referring them to hospital or a specialist
• conducting further investigations
• ensuring appropriate follow-up

The patient argued that if these steps had been taken, the lymphoma would likely have been diagnosed earlier and treatment could have commenced sooner.

The GP denied negligence and maintained that his management of the initial consultation was reasonable based on the information available at the time.

How the court approached the case

When courts assess medical negligence claims, they do not judge a doctor’s actions with the benefit of hindsight. Instead, the key question is whether the doctor’s conduct fell short of the standard of care expected of a reasonable practitioner in the same circumstances at the time the service was provided.

What constitutes negligence?

Although each state and territory has its own civil liability legislation, the legal principles applied by courts are broadly similar. In general, negligence will only be established if:

• the risk of harm was foreseeable
• the risk was not insignificant
• a reasonable practitioner would have taken additional precautions in the circumstances

Courts will also consider factors such as the likelihood of the risk occurring and the burden involved in taking precautions to prevent it.

In this case, the risk of harm was that a delay in diagnosis would leave the lymphoma untreated and allow it to develop to a point where it was terminal.

Why the GP was not found negligent

The court accepted that the GP’s consultation could have been managed better in some respects. For example, the judge noted that it may have been preferable to arrange a follow-up appointment or provide clearer advice about returning if pain persisted.

However, the legal standard is reasonable care, not perfect practice.

Several factors influenced the court’s conclusion that the GP had not been negligent.

First, leg pain is a very common symptom and is usually caused by musculoskeletal problems that resolve on their own.

Second, the investigations that were arranged, including blood tests, were considered an appropriate first step in assessing the patient’s symptoms.

Third, expert evidence suggested that most cases of musculoskeletal pain improve without further intervention. Because of this, it was reasonable for the GP to expect that a patient experiencing ongoing pain would return for further review.

The court therefore accepted that the GP’s stepwise approach to investigation, sometimes described as a “wait and see” strategy, was within the range of reasonable clinical practice.

The issue of follow-up

One of the key themes in the case was the absence of a clear follow-up strategy.

The trial judge noted that it would have been better practice for the GP to clearly explain the purpose of the blood tests and to advise the patient to return if the pain persisted despite normal results.

The judge described these types of measures as a form of “safety net”.

However, the absence of such a safety net did not ultimately amount to negligence. The court accepted that a reasonable GP could assume that a patient experiencing ongoing significant pain would seek further medical attention if the symptoms continued.

Causation was also uncertain

Even if breach of duty had been established, the patient would still have needed to prove that earlier investigation would probably have resulted in an earlier diagnosis.

The court considered expert evidence about when the lymphoma would likely have become detectable.

There was disagreement between experts about whether the disease could have been identified at the time of the initial consultation or whether it only became detectable many months later.

Ultimately, the court concluded that it had not been established that earlier investigations would have changed the timing of the diagnosis.

Why this case matters

This decision highlights the realities of clinical practice, where doctors often need to make decisions in the face of diagnostic uncertainty.

Patients frequently present with symptoms that have multiple possible explanations, most of which are benign.

The law recognises that doctors are entitled to adopt a stepwise approach to investigation and that not every serious condition can be identified at its earliest stage.

At the same time, the case serves as a reminder of the importance of documenting clinical reasoning and clearly communicating follow-up advice to patients when symptoms remain unexplained.

The legal perspective

This case demonstrates the importance of considering the factual circumstances identified at the time of a consultation, in assessing whether a practitioner has exercised reasonable care. Further, the Court of Appeal distinguished between reasonable care and best practice.

The Court of Appeal cautioned against venturing into hindsight reasoning when considering the probability of harm and found that the GP had not acted unreasonably in relying on the patient to re-present if their pain had not resolved (the ‘wait and see’ approach).

The GP perspective

While the patient’s later diagnosis and outcome evoke deep empathy, the case is a stark reminder of the realities of frontline medicine. The GP was faced with a common presentation of nonspecific pain. We always consider serious differentials, but we investigate step by step, and sometimes that means watchful waiting. We also rely on patients to return if symptoms persist or escalate, because not every case can realistically be followed up in an overstretched practice. Too often we’re judged against a gold‑standard ideal, so it was reassuring to see the court recognise that reasonable care—not perfection—is the true standard.

Key takeaways

• Your actions and clinical decisions are assessed by courts based on what was known at the time of the consultation.
• A stepwise approach to investigation can be reasonable when patients present with common symptoms that are usually caused by benign conditions. It is important to document why you consider a stepwise approach should be followed.
• Failing to follow what may later appear to be best practice does not necessarily mean your care fell below the standard of reasonable clinical practice.
• Providing clear safety-netting advice helps ensure patients understand when they should return for review if symptoms persist or worsen.
• Careful documentation of your clinical reasoning, the advice you give to patients, and any plans for follow-up is important especially when the diagnosis remains uncertain.