Introduction
There are approximately 10 500 cases of pancreatic cancer diagnosed every year in the UK and the prognosis remains devastating, with only 25% and 5% of patients surviving 1 and 5 years, respectively.1 Despite numerous advancements in cancer therapeutics, the outlook has failed to improve significantly as compared with other malignancies, meaning pancreatic cancer is due to surpass breast cancer as the third leading cause of cancer death by 2025.2 The challenge in the management of pancreatic cancer is multifactorial, attributed to a combination of lack of effective screening, the heterogeneous genetic landscape giving rise to a high level of chemoresistance and late presentation of disease; with respect to the latter, patients unfortunately often present with locally advanced or metastatic disease, meaning potentially curative resection is only possible in 20% of cases.3 When making multidisciplinary decisions regarding patient management, a number of elements require consideration, which may be broken down into local and distant factors. Locally, accurate analysis of tumour involvement with adjacent vasculature and organs is imperative to determine whether an R0 (negative margin) surgical resection can be achieved, which is known to incur the optimal prognosis.4 Meanwhile, distant factors also necessitate close examination, most notably looking for the presence of metastases, such as the omentum, peritoneum and liver, which indicates the need for systemic anticancer therapy (SACT).
When considering non-metastatic cases of pancreatic cancer, classification of these tumours has typically fallen within three domains: resectable, borderline resectable and locally advanced.5 Resectable tumours are clearly away from local vasculature, and as such current recommendation is to proceed straight to resection. The optimal management of each of the other two subgroups remains a point of debate owing to the lack of high-quality evidence supporting which approach is best; however, current practice tends towards the use of upfront/neoadjuvant SACT in an attempt to downstage disease, while concomitantly testing tumour biology, prior to potential resection, with or without vessel resection.6
As part of the investigative work-up of these patients, in-depth cross-sectional imaging is imperative to assist in optimal decision-making within the multidisciplinary team (MDT). Numerous radiological modalities are used, most commonly CT, MRI and endoscopic ultrasound; however, a dedicated pancreatic protocol CT has established itself as the gold standard for the initial assessment of pancreatic tumour resectability.7
The radiological reporting of pancreatic cancer is currently delivered through free-text reports, with local and distant elements of disease reported using a variety of descriptive terminologies. More recently, the concept of structured reporting (SR) has gained traction, with a number of other tumour types adopting standardised reporting templates.8 9 SR is typically delivered in three separate tiers: first are simple headings, such as ‘indication’ or ‘overall impression’, and second ‘itemised reporting’ where specific organ/tumour detail is included in the examination findings subsection.10 The last and probably most important tier is the use of standardised language to deliver consistent reporting. This is particularly pertinent in pancreatic cancer with respect to vascular involvement, as a number of descriptive terms exist within published guidelines,5 11 12 with some uncertainty as to the difference between them. Some associations have moved towards quantifying vessel involvement12; however, this is often not documented in reports.
A structured and consistent reporting template for pancreatic cancer will provide innumerable benefits. SR will ensure all relevant data points are included and reported upon to assist in optimal decision-making and improve MDT efficiency. Surgeons and oncologists will have all the necessary information from the report to assist in operative planning and assessment of treatment response in line with published guidelines. SR is also highly beneficial with respect to national audit and research implementation, clinical trial design and in general working towards more optimal patient selection and personalised treatment regimens.
In 2019, the National Cancer Research Institute (NCRI) formulated the UK localised pancreatic cancer framework document, highlighting areas of need at all stages of pancreatic cancer, with a particular emphasis on adequate staging and standardised classification. Subsequently, and with the support of multiple national associations including the RCR (Royal College of Radiologists), BSGAR (British Society of Gastrointestinal and Abdominal Radiology), RCSEng (Royal College of Surgeons of England), Association of Upper Gastrointestinal Surgery, PSGBI (Pancreatic Society of Great Britain and Ireland) and PCUK (Pancreatic Cancer UK), a collaborative consensus project was instigated, with a multi-institutional group of experts in pancreatic cancer, including radiologists, surgeons, oncologists and pathologists, with the aim of producing a new radiological reporting template for pancreatic cancer with all the aforementioned benefits.