The stage of gastrointestinal cancer at the time of diagnosis is the main prognostic factor. While most early stage cancers can be cured, often with minimally invasive treatments, advanced or metastatic disease generally requires complex surgery, radiotherapy, and chemotherapy, and carries a significantly poorer prognosis.
Many cancers especially those in early stages are not associated with any symptoms and can progress silently for months or even years. Their prevention and early detection therefore rely on the individualized identification of factors that increase the risk of development and the implementation of targeted preventive measures.
El aparato digestivo incluye a una amplia variedad de órganos localizados en el tórax, el abdomen y la pelvis. Todos ellos pueden ser el origen de enfermedades neoplásicas.
Entre los más comunes destacan los listados:
Most cases arise in the segment adjacent to the junction with the stomach, or gastroesophageal junction, in cells with a columnar morphology, typically in the context of Barrett’s esophagus and gastroesophageal reflux.
A second type of tumor, known as squamous cell carcinoma, can occur in any segment of the esophagus and is more common in individuals with excessive tobacco or alcohol consumption.
It arises from the transformation of the mucosal cells lining the stomach. The most common type is the “well-differentiated” or intestinal type, but other variants exist, such as the “diffuse” or signet-ring cell type, as well as lymphomas.
Less commonly, the deeper layers of the stomach wall can give rise to neuroendocrine tumors and various types of mesenchymal tumors.
The most common type of liver cancer is metastasis, originating from tumors in other abdominal or pelvic organs.
However, primary liver cancer can also develop. Hepatocellular carcinoma, or liver cell cancer, usually arises in the context of untreated chronic inflammation resulting from liver diseases such as certain viral hepatitis infections, or cirrhosis secondary to metabolic disorders or excessive alcohol consumption.
It is the type of cancer whose incidence has increased most rapidly in recent decades. It usually develops in the cells lining the pancreatic ducts, in cells covering cystic lesions, and, less frequently, in the neuroendocrine cells of pancreatic tissue.
In many cases, preventive measures can be taken for individuals with a family history or hereditary risk.
Although less common than colorectal cancer, any segment of the small intestine can develop cancer, particularly in individuals with a family history or hereditary cancer syndromes, as well as in those with chronic inflammatory diseases or untreated celiac disease.
The membrane lining the abdominal cavity and all intra-abdominal organs, usually affected secondary to tumor spread from other abdominal or pelvic cancers, but which can exceptionally occur as a primary cancer.
It includes both colon and rectal cancer. It is the most common type of cancer diagnosed in Spain and other developed countries when men and women are considered together. It is the second leading cause of cancer death in men, after lung cancer, and the third leading cause of cancer death in women, after lung and breast cancers.
Its prevalence and severity have led all international scientific societies to recommend preventive measures and early detection for everyone over the age of 50.
It develops in the gallbladder, an organ that stores bile produced by the liver.
The symptoms associated with gastrointestinal cancer are highly variable, depending on the organ affected and, even within the same organ, on the specific segment involved.
In general, it is recommended to seek medical attention if symptoms are persistent, lasting for weeks, or progressively worsening.
Abdominal pain, nausea and vomiting, changes in bowel habits, bleeding with bowel movements, and unexplained weight loss all require a thorough medical evaluation.
Gastrointestinal cancer is a complex condition influenced by multiple factors. Its development usually results from intricate interactions between genetic predispositions and environmental influences.
In this context, certain lifestyle habits such as an unhealthy diet, excessive alcohol consumption, and smoking can contribute to the risk of developing gastrointestinal cancer. Chronic infections, a family history of cancer, the presence of preexisting medical conditions, and exposure to carcinogens can also play a crucial role in the initiation and progression of these cancers. Understanding these complex interrelationships is essential for prevention and early detection, enabling effective interventions to reduce risk and improve treatment outcomes.
El primer paso para el diagnóstico es siempre la elaboración de una historia clínica detallada. Las pruebas complementarias para su detección son muy variables dependiendo de la sospecha diagnóstica.
This procedure allows the physician to examine the inner lining of the colon and rectum for polyps or signs of colorectal cancer.
Gastroscopy, also known as upper digestive endoscopy, allows the physician to examine the inside of the esophagus, stomach, and the first portion of the small intestine.
These tests look for microscopic traces of blood in the stool, which are not visible to the naked eye, and may indicate the presence of polyps or cancer in the colon or rectum.
In some gastrointestinal cancers, tumor markers molecules present in the blood that signal the possible excessive growth of tumor cells are used.
Generally, their use is limited to monitoring cancer and they should not be relied upon as a tool for early diagnosis in asymptomatic individuals.
There is a wide range of imaging tests useful for diagnosing or assessing the extent of gastrointestinal tumors. These include ultrasounds, computed tomography (CT) scans, magnetic resonance imaging (MRI), and positron emission tomography (PET) scans, among others.
Prevention includes all measures aimed at avoiding the development of cancer. Maintaining a healthy lifestyle is always the first step. The measures that have proven most effective include:
Consume a diet rich in fruits, vegetables, and whole grains. Proteins from fish also provide high nutritional value. Limit the intake of red meats and processed meats, as well as foods high in saturated fats.
Maintain a healthy weight through a balanced diet and regular physical activity.
Engage in regular physical activity, aiming for at least 150 minutes of moderate exercise per week.
Limit alcohol consumption.
Excessive alcohol intake is associated with an increased risk of several types of digestive cancers.
Quitting smoking and avoiding exposure to tobacco smoke are essential for preventing cancer of the esophagus, stomach, pancreas, colon, as well as certain gynecological and urinary cancers.
If you are at risk for hepatitis B, consider vaccination, as these infections can increase the risk of liver cancer.
Diabetes mellitus is a risk factor for colorectal cancer, among others. Proper management that normalizes blood glucose levels and reduces metabolic stress can help lower this risk.