Difference Between a Tumour and a Cancer

Tumour and Cancer: What’s the Difference?

Most people mistakenly think that a tumour and cancer are the same thing, but in reality, both of them are completely different conditions. Tumours are abnormal growths of cells and tissues, also known as neoplasms.

What are the Differences Between Tumour and Cancer?

The following table describes the major differences between a tumour and a cancer.

What are the Types of Tumours?

A proper knowledge of the different types of tumours is important for accurate diagnosis and adequate treatment. Here are some of the common types of tumours:

Benign (Non-cancerous)

Benign or non-cancerous tumours do not invade nearby tissues or metastasise to other organs and remain asymptomatic within the body. These have fewer health complications and have a slower growth rate than malignant tumours.

Malignant (Cancerous)

Experts describe these tumours as cancerous, as they possess uncontrolled growth and invade other tissues. These tumours cause serious health risks and can interfere with the normal functioning of the tissues. Genetic and environmental factors are responsible for the occurrence of malignant tumours.  

Precancerous

These tumours are also known as pre-neoplastic lesions, as they tend to become cancerous if left untreated. They exhibit atypical cellular changes, which suggest a progression towards malignancy. Early detection and monitoring of precancerous tumours help prevent invasive cancer development.

What are the Different Types of Cancers?

Cancer has many unique characteristics depending on the category and individuals. Here we will discuss the types of cancers prevalent in the medical sector:

Sarcoma

Sarcomas are a special type of cancer that develops in connective tissues, such as muscles, fat, and bones. These are less prevalent than carcinomas. The most common types of sarcomas are liposarcoma(fat), osteosarcoma (bone), and leiomyosarcoma (smooth muscle).  

Carcinoma

It is the most common type of cancer across the globe. It begins in the epithelial tissues that line body surfaces and organs. Subcategories of this cancer include squamous carcinoma (skin, lungs, and oesophagus), adenocarcinoma (glandular tissues), and basal carcinoma(skin).

Leukemia

This cancer develops in the blood-forming tissues, such as the lymphatic system and bone marrow. It shows characteristics of abnormal growth of white blood cells within these areas. The most common types include chronic lymphocytic leukaemia and chronic myeloid leukaemia.   

Melanoma

Melanomas are a type of cancer that originates in melanocytes, which are the cells that produce melanin. These are highly prone to metastasis and can become aggressive if there is no early detection.  

Understanding the proper types and categories of cancer and tumours can help doctors give proper treatment. Cancers are diseases that occur due to the uncontrolled growth and angiogenesis of abnormal cells. Indeed, not all tumours are cancerous, but some tumours can lead to cancer.