You asked: Which of the following best defines a tumor?

What is a tumor defined as?

(TOO-mer) An abnormal mass of tissue that forms when cells grow and divide more than they should or do not die when they should. Tumors may be benign (not cancer) or malignant (cancer).

What is a well defined tumor?

If the cells of the tumor and the organization of the tumor’s tissue are close to those of normal cells and tissue, the tumor is called “well-differentiated .” These tumors tend to grow and spread at a slower rate than tumors that are “undifferentiated” or “poorly differentiated,” which have abnormal-looking cells and …

How do you classify a tumor?

Tumors are traditionally classified four ways: (I) broadly, by tissue, organ, and system; then by (II) specific type, and (III) grade according to WHO classifications; and (IV) finally by spread according to the Tumor Node Metastasis (TNM) system.

What is the classification of Tumour?

Tumours are classified according to the most differentiated cells with the exception of carcinomas where a few tumour cells show neuroendocrine differentiation. In this case these cells are regarded as redifferentiated tumour cells, and the tumour is not classified as neuroendocrine.

How does a tumor feel like?

Most commonly, soft tissue sarcomas feel like masses or bumps, which may be painful. If the tumor is in the abdomen, it may produce nausea or a sensation of fullness as well as pain, he says.

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Are Cancerous tumors well defined?

A round lump with a well-defined outline is, in most cases, benign. However, in 10 to 20% of all cases, a round and well-defined lump may correspond to a cancer.

What are the five classes of chemotherapy drugs?

Cancer chemotherapy agents are classified according to their chemical nature and function. Some of the well known classes of cancer chemotherapy agents include alkylating agents, plant alkaloids, antimetabolites, anthracyclines, topoisomerase inhibitors and corticosteroids.

What are mixed type cancers?

Mixed types: Mixed cancers develop in two different types of cell from one category or multiple categories. Myeloma: Often occurring in the bone marrow, this type originates in plasma cells that circulate as part of the blood.