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What Is Malignant And Benign Tumors?

Referencing Styles : Harvard | Pages : 1
  • University: Monash University
  • Country: AU

1.What is benign tumour?

A benign tumour is a type of tumour, which does not invade its surrounding tissues or get spread to the other parts of the body. Benign does not carry onco genes or cancer cells within it and it could be cured with the help of operation or medicines. A benign tumour is a mass of numerous cells, which lack the core capability of invading the neighbouring tissue or metastasize. However, these distinctive cells could be extremely large at times. Whenever these cells are being removed, the benign tumours generally do not grow back, however the malignant cells have the tendency to grow immensely. Benign tumours in any part of the body is curable and not life threatening, however, the scenario is different for brain tumours. Brain benign tumours are extremely life threatening and could be risky for the human being if not cured on time. These tumours have a slow rate of growth than the malignant tumours and these tumour cells are generally more differentiated or they comprise of normal characteristics.

These cells are eventually surrounded by the outer surface or a fibrous sheath of connective tissues and remain with the skin epithelium. The most common examples of benign tumours are uterine fibroids and moles. In spite of the fact that the benign tumours would not metastasize or locally invade the tissues, few distinctive kinds of tumours might produce negative health effects. A growth of thee benign tumours substantially produce a mass effect, which could compress the tissues and might even cause nerve damages, death of tissues, damage to the organ and reduction of blood to any particular body part. The major health effects of this tumour might be quite prominent when the tumour is in an enclosed space like the sinus, respiratory tract, and cranium or even inside the bones. The tumours of endocrine tissues might also over produce certain hormones, majorly when these cells are well separated. The examples of these benign tumour include adrenocortical adenomas and thyroid adenomas.

2. What is malignant tumour?

The malignancy is a tendency of a specific medical condition for becoming progressively worse. This malignancy is mostly familiar with the characterization of a cancer. A malignant tumour mainly contrasts with a non cancerous benign tumour, within which the malignancy is not limited to the growth. It has the core capability to invade into the adjacent tissues and might even be capable to spread to the distant tissues. On the other hand, a benign tumour does not comprise of any of these properties. Malignancy in the cancers is being characterized by metastasis, invasiveness and anaplasia. These malignant tumours are even characterized by the instability of genome, so that cancer is being assessed by the entire genome sequencing. There are almost ten thousand to one lakh mutations frequently within the complete genomes. The cancer cells generally show heterogeneity of tumours that comprise of multiple sub clones.

These cells even have decreased the DNA repairing enzyme expression for the epigenetic methylation of the DNA or even altering the micro RNAs for controlling the expression of DNA repair genes. The malignant tumours are distinctive cancerous tumours, which could potentially result into the death of the human being. Unlike the benign tumours, the malignant tumours grow quite quickly and could even spread to the new territory within a procedure called metastasis. There are several abnormal cells, which form a malignant tumour and they multiply as an extremely fast rate. Before becoming malignant, the tumour is termed as pre malignant. In this particular stage, the tumour is not cancerous, however it appears to be growing or developing certain distinctive properties of cancer. A malignant tumour can also be treated if it is being identified in the first phase. Chemo therapy is the most common treatment of cancer and it helps in burning the cancer cells and stopping them from getting spread any further. However, there are cases, in which no treatment can work and chemo therapy fails completely. Another common case is when the cancer cells grow back in some other parts of the body few years after the first treatment.

3. What are some common distinctions between malignant and benign tumours?

There are two major classifications of tumours. One of them is termed as benign and the second classification is malignant. The benign tumour is the type of tumour, which does not invade its respective surrounding tissues and does not spread around the entire body. However, a malignant tumour is the type of tumour, which might invade its surrounding tissue and then get spread in the entire body. An important distinction between them is that both of the types are tumours and have earlier same symptoms. The time to grow a tumour (both malignant and benign) is around 2 months and the respective human being cannot feel any pain or irritation due to its presence. It is simply a swollen area, where the nerves do not provide any sensation. The second distinction is that both of them could be life threatening at times.

4. What are the macroscopic differences between benign and malignant tumour?

There are few macroscopic differences between benign and malignant tumours. The benign tumours generally grow very slowly, however the malignant tumours grow at an excessive high rate. It is even noted that the malignant tumours have grown within few weeks. The benign tumours are more likely to be moved freely within the specific tissue, on which they are residing, however, the malignant tumours could be extremely difficult in moving around for the invasion of local tissues. Another difference is that the benign tumours have the tendency in being extremely well circumscribed whenever looked at grossly. After MRI, it is being observed that the edges of this tumour is proper. However, the case is different for malignant tumour. After MRI, it is checked that the malignant tumours have irregular shapes and it might be extremely difficult in identifying where exactly the tumour is starting and ending. Moreover, benign tumours do not change colours, which is extremely common in malignant tumours.


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