Tumor definition in medical literature
Pro Research Analysisby 
Searched over 200M research papers
Tumor Definition in Medical Literature
Tumor: Abnormal Cell Growth and Mass Formation
In medical literature, a tumor is defined as an abnormal mass of tissue that results from excessive and abnormal cell proliferation. This mass can be either solid or fluid-filled and is also referred to as a "neoplasm" 145. Tumors arise when cells in the body grow and divide uncontrollably, disregarding the normal regulatory mechanisms that keep cell growth in check 145.
Benign vs. Malignant Tumors: Key Differences
Tumors are generally classified into two main types: benign and malignant. Benign tumors are non-cancerous, meaning they remain localized to their site of origin and do not invade surrounding tissues or spread to other parts of the body. Their cells closely resemble normal cells in appearance and behavior 125. In contrast, malignant tumors are cancerous. These tumors are characterized by abnormal cells that grow rapidly, invade nearby tissues, and can spread (metastasize) to distant organs through the blood or lymphatic system 1235. The boundary between malignant tumor cells and normal tissue is often unclear, and these tumors can be life-threatening due to their aggressive nature 235.
Tumor Diagnosis and Classification
To determine whether a tumor is benign or malignant, a biopsy is often performed. In this procedure, a sample of the tumor cells is examined under a microscope by a pathologist . Modern classification systems, such as those used for brain tumors, now incorporate both traditional histopathological features and advanced molecular genetic data, allowing for more precise diagnosis and prognosis .
Tumor Symptoms and Clinical Presentation
Tumors may present with various symptoms depending on their location and type. Common signs include the appearance of a new lump, abnormal bleeding, unexplained weight loss, prolonged cough, or changes in bowel movements. However, these symptoms are not exclusive to tumors and may be caused by other medical conditions .
Advances in Tumor Detection and Research
Recent advances in technology, such as artificial intelligence algorithms, have improved the early detection and classification of tumors. These tools help in diagnosing tumor diseases more accurately and efficiently, which is crucial for timely treatment and better outcomes . Additionally, molecular and genetic research has deepened our understanding of tumor biology and is leading to more personalized treatment approaches, especially in complex cases like brain tumors .
Conclusion
In summary, a tumor is an abnormal mass of tissue caused by uncontrolled cell growth. Tumors can be benign (non-cancerous) or malignant (cancerous), with the latter having the potential to invade and spread throughout the body. Accurate diagnosis, classification, and early detection are essential for effective management and treatment of tumor diseases 12345.
Sources and full results
Most relevant research papers on this topic