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Novel Approaches in Cancer Study

Current Insights on the Prevalence, Clinical Diagnosis and Management of Pancreatic Cancer: A Comprehensive Review

Moses Adondua Abah1*, Nathan Rimamsanati Yohanna1, Esther Edesiri Ajoku2, Micheal Abimbola Oladosu3, Macdonald Uchenna Eke4, Naomi Ngozichukwuka Ajoniloju5,6, Njideka Obioma Nwanne4, Onyinye Ifeoma Ikedionwu7, Odusanya Kikunlore Elijah8, Jennifer Nnaemeka9 and Ekpenyong Utomobong Sunday10

1Department of Biochemistry, Faculty of Biosciences, Federal University Wukari, Nigeria

2Healthcare Management and Administration, University of New Orleans, USA

3Department of Biochemistry, Faculty of Basic Medical Sciences, University of Lagos, Nigeria

4Department of Medicine, College of Medicine, Imo State University, Nigeria

5Department of Pharmacology and Therapeutics, Faculty of Basic Clinical Sciences, Bowen University, Nigeria

6Department of Pharmacology and Therapeutics, Faculty of Basic Medical Sciences, University of Ibadan, Nigeria

7Department of Internal Medicine and Surgery, Faculty of Clinical Sciences, College of Medicine, University of Lagos, Nigeria

8Department of hematology and blood transfusion, Olabisi Onabanjo University Teaching hospital, Nigeria

9Department of Chemistry, Faculty of Arts and Sciences, Prairie View A&M University, USA

10Department of Internal Medicine, College of Medicine, University of Uyo Teaching Hospital, Nigeria

*Corresponding author:Moses Adondua Abah, Department of Biochemistry, Faculty of Biosciences, Federal University Wukari, Wukari, Taraba State, Nigeria

Submission: September 09, 2025;Published: November 13, 2025

DOI: 10.31031/NACS.2025.08.000689

ISSN:2637-773X
Volume8 Issue 2

Abstract

Pancreatic cancer is a highly aggressive malignancy with a poor prognosis, accounting for a significant number of cancer-related deaths worldwide. Despite its rising incidence, the five-year relative survival rate remains low at 13%, with adenocarcinoma having a survival rate of just 8%. Early detection and effective management of pancreatic cancer are crucial to improving patient outcomes. Recent advancements in diagnostic technologies, including liquid biopsies, molecular imaging, and artificial intelligence-driven approaches, have shown promise in improving early detection rates. Liquid biopsies, in particular, offer a non-invasive means of detecting circulating cells, DNA and exosomes in bodily fluids. Meanwhile, advancements in genomic science have led to the development of targeted therapies, such as KRAS inhibitors, and immunotherapies, including checkpoint inhibitors and cancer vaccines. The management of pancreatic cancer requires a multidisciplinary approach, incorporating surgery, chemotherapy and radiation therapy. Novel therapeutic strategies, including precision medicine approaches and nanoparticle-based drug delivery systems, are being explored to enhance treatment efficacy. Clinical trials are ongoing to evaluate the safety and efficacy of these emerging treatments. This review aimed at providing current insights into the prevalence, clinical diagnosis, and management of pancreatic cancer. The complexities of pancreatic cancer diagnosis and treatment, emphasizing the need for continued research and clinical trials to improve patient outcomes were also discussed in this review.

Keywords:Pancreatic cancer; Clinical diagnosis; Targeted therapies; KRAS inhibitors; Precision medicine

Introduction

Pancreatic cancer is a malignant disease that begins when abnormal cells in the pancreas grow uncontrollably and form a tumour. The pancreas is a gland located deep in the abdomen that produces enzymes for digestion and hormones for blood sugar regulation. Functionally, it has both exocrine components responsible for secreting digestive juices into the small intestine and endocrine components responsible for producing hormones such as insulin and glucagon. Most pancreatic cancers originate in the exocrine cells, which produce digestive juices and are classified as pancreatic ductal adenocarcinoma (PDAC), the most common and aggressive subtype [1,2]. Pancreatic cancer is one of the most aggressive and lethal malignancies globally, ranking as the seventh leading cause of cancer-related deaths. Despite accounting for only 3% of all cancers, it contributes disproportionately to cancer mortality due to its insidious onset, rapid progression and limited therapeutic options. According to recent global cancer statistics, the incidence of pancreatic cancer is rising, with over 495,000 new cases and 466,000 deaths reported worldwide in 2020 alone [3]. In many regions, including sub-Saharan Africa, underreporting and limited access to diagnostic tools may obscure the true burden of the disease, making accurate prevalence data a persistent challenge. The most common histological subtype, PDAC, comprises over 90% of cases and is characterized by its resistance to conventional therapies and early metastatic potential (American Cancer Society, 2024). Risk factors include age, smoking, chronic pancreatitis, diabetes mellitus, obesity and certain genetic syndromes. The disease often remains asymptomatic until it reaches an advanced stage, contributing to its poor prognosis. Symptoms such as jaundice, weight loss, abdominal pain, and anorexia typically emerge late, by which time curative treatment is rarely feasible. As a result, the five-year survival rate remains below 10%, and median survival for metastatic disease is less than six months.

Early and accurate diagnosis is critical to improving outcomes, yet remains challenging due to the pancreas’s deep anatomical location and the nonspecific nature of early symptoms. Imaging modalities play a central role in the diagnostic process. Computed Tomography (CT), particularly multiphasic contrast-enhanced scans, is the first-line tool for detecting pancreatic masses and assessing resectability. Magnetic Resonance Imaging (MRI) offers superior soft tissue contrast and is especially useful for characterizing indeterminate lesions and evaluating ductal anatomy via MRCP. Positron Emission Tomography–Computed Tomography (PET-CT) provides metabolic insights and is valuable for staging and detecting distant metastases. Endoscopic Ultrasound (EUS), with its high-resolution imaging and ability to guide fine-needle aspiration (FNA), is indispensable for tissue diagnosis and staging [4]. Together, these modalities form a comprehensive diagnostic framework that informs clinical decision-making.

Management of pancreatic cancer depends on the stage at diagnosis and the patient’s overall health. Surgical resection remains the only potentially curative option, typically reserved for localized tumours without major vascular involvement. The Whipple procedure (pancreaticoduodenectomy) is the most common surgical approach for tumours in the pancreatic head. However, only 15-20% of patients are eligible for surgery at the time of diagnosis. For unresectable or metastatic disease, systemic chemotherapy is the mainstay of treatment. Regimens such as FOLFIRINOX or gemcitabine with nab-paclitaxel have shown modest survival benefits. Radiation therapy may be used in select cases for local control or palliation. Emerging therapies, including immunotherapy, targeted agents, and personalized medicine approaches, are under investigation but have yet to yield transformative results (Tempero et al., 2023). Supportive care is also a vital component of management, addressing pain, nutritional challenges, and psychological distress. Multidisciplinary care involving oncologists, surgeons, radiologists, gastroenterologists, and palliative care specialists is essential for optimizing patient outcomes. In resource-limited settings, barriers such as delayed diagnosis, lack of specialized care and limited access to advanced imaging and treatment modalities further complicate management and contribute to poor survival rates. This study aimed at providing current insights into the prevalence, clinical diagnosis, and management of pancreatic cancer. By synthesizing recent data and highlighting advances in diagnostic imaging and therapeutic strategies, we seek to underscore the importance of early detection, multidisciplinary care, and ongoing research in improving outcomes for this devastating disease.

Epidemiology and Risk Factors of Pancreatic Cancer

As documented by world cancer research, pancreatic cancer accounts for over 510,000 new cases and approximately 467,000 deaths annually, making it the seventh leading cause of cancerrelated mortality [5]. Table 1 summarizes the age-standardized incidence rate (ASIR) that has steadily increased over the past three decades, rising from 5.47 per 100,000 in 1990 to 5.96 per 100,000 in 2021 [6]. This upward trend is particularly pronounced in highincome countries such as Japan, the United States and Germany, where lifestyle and aging populations contribute significantly to disease burden. The five-year survival rate for pancreatic cancer remains dismally low, hovering around 10-13% [7]. This is largely due to the asymptomatic nature of early-stage disease and the lack of effective screening tools for the general population. Most patients are diagnosed at stage III or IV, when curative surgical options are no longer viable. Consequently, mortality rates closely mirror incidence rates, underscoring the urgent need for improved early detection strategies.

Table 1:Incidence and mortality rate as a result of pancreatic cancer in some nations across the globe (country-specific data).


Table 2:Summary of lifestyle and environmental risk factors of pancreatic cancer.


Source: Zeng et al. [6].

Pancreatic cancer is multifactorial, with both genetic predispositions and environmental exposures playing critical roles. Approximately 10% of cases are attributed to hereditary factors, including mutations in genes such as BRCA1, BRCA2, PALB2, ATM, and CDKN2A [8]. Individuals with these mutations often have a significantly elevated lifetime risk, particularly when combined with a family history of pancreatic or related cancers. As summarized in Table 2 lifestyle factors also contribute substantially to disease risk. Cigarette smoking is one of the most well-established modifiable risk factors, accounting for nearly 25% of pancreatic cancer cases and doubling the risk compared to non-smokers [9]. Obesity, particularly with a body mass index (BMI) over 30, has been linked to a 20% increase in risk, while chronic alcohol consumption and type 2 diabetes are associated with both direct and indirect pathways of carcinogenesis [6]. Diets low in fruits and vegetables and high in processed meats may further exacerbate risk, though evidence remains mixed. Environmental exposures, such as prolonged contact with industrial chemicals used in dry cleaning and metalworking, have also been implicated. These exposures may induce chronic inflammation or DNA damage, contributing to malignant transformation in pancreatic tissue [9].

Identifying individuals at elevated risk is crucial for implementing targeted screening and prevention strategies. High-risk populations include those with a strong family history of pancreatic cancer, defined as having two or more first-degree relatives affected. Familial pancreatic cancer (FPC) accounts for a significant subset of cases, even in the absence of known genetic syndromes (UpToDate, 2023). Several hereditary syndromes are associated with markedly increased risk. For example, individuals with hereditary breast and ovarian cancer syndrome (HBOC) due to BRCA mutations, Lynch syndrome (MLH1/MSH2), Peutz-Jeghers syndrome (STK11), and familial atypical multiple mole melanoma (CDKN2A) are all considered high-risk [8]. These syndromes often present with early-onset disease and may benefit from surveillance programs such as endoscopic ultrasound or MRI-based screening.

Clinical Presentation and Diagnosis of Pancreatic Cancer

Pancreatic cancer is among the deadliest malignancies, often diagnosed at an advanced stage due to its subtle and non-specific symptoms. Despite technological advances, the five-year survival rate remains dismally low, emphasizing the need for earlier detection and improved diagnostic strategies [10]. The pancreas, located deep in the abdomen behind the stomach, plays a crucial role in digestion and blood sugar regulation. Its hidden location contributes to the vague nature of early symptoms, which are often mistaken for benign gastrointestinal issues.

Figure 1:Anatomical location of the pancreas and its proximity to vital structures in the body. Source: Mayo Clinic [11].


Patients frequently report abdominal pain or back discomfort, especially when tumours press against surrounding nerves. Figure 1 below illustrates the anatomical location of the pancreas and its proximity to vital structures such as the bile duct and duodenum.

This helps explain why tumours in the pancreatic head often cause jaundice, a yellowing of the skin and eyes due to bile duct obstruction [11]. Pancreatic ductal adenocarcinoma develops in the pancreas most commonly in the head where tumour growth and ductal obstruction cause early symptoms such as jaundice, dark urine, pale stools and pruritus due to impaired bile flow. As the tumour enlarges or occurs in the body/tail, it compresses nearby nerves and organs, producing deep epigastric or back pain. Tumour-induced pancreatic insufficiency leads to steatorrhea, malabsorption and weight loss, while systemic inflammatory and metabolic effects contribute to anorexia, fatigue and cachexia. Venous invasion or hypercoagulability from tumour-secreted procoagulants may cause migratory thrombophlebitis (Trousseau’s sign). Advanced disease often spreads to the liver, lungs, or peritoneum, worsening abdominal distension and causing ascites. These symptoms reflect both the pancreas’s central digestive role and the tumour’s aggressive, infiltrative nature (Eloubeidi et al., 2004).

Diagnosing pancreatic cancer is notoriously difficult. The disease often mimics benign conditions such as gallstones or gastritis, leading to misdiagnosis and delayed treatment. Figure 2 below highlights the diagnostic journey many patients face, often involving multiple consultations before reaching a definitive diagnosis [12].

Figure 2:Challenges encountered in diagnostic procedure of pancreatic cancer. Source: Primavesi [13].


The absence of specific early symptoms and lack of effective screening tools further complicate diagnosis. Most cases are identified at stage III or IV, when curative surgery is no longer viable [13]. Even when symptoms are present, they are frequently dismissed or attributed to aging or lifestyle factors [14]. Imaging is central to the diagnosis, staging and management of pancreatic cancer. Each modality offers unique strengths depending on the clinical context.

Computed Tomography (CT)

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© 2025. Moses Adondua Abah. This is an open access article distributed under the terms of the Creative Commons Attribution License , which permits unrestricted use, distribution, and build upon your work non-commercially.

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