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Oncology (POS Term 2) > Oncology Basics > Flashcards

Flashcards in Oncology Basics Deck (11)
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1
Q

Define Neoplasia

A

Uncontrolled proliferation of cells that continues in absence of inciting cause from a single cell.

2
Q

What types of characteristics do benign tumours have?

A

Grow by expansion, low to moderate growth rate, no metastasis, tissue well organised, freely mobile on palpation, capsule, no haemorrhage or necrosis etc.

3
Q

What types of characteristics do malignant tumours have?

A

Grow by invasion, no capsule, not mobile, recurs after excision, internal necrosis and haemorrhage, metastasize, malignant markers.

4
Q

What is a malignant tumour of epithelial origin called?

A

A carcinoma

5
Q

What is a malignant tumour of mesenchymal origin called?

A

A sarcoma

6
Q

What is lymphoma? Benign or malignant?

A

A tumour of the lymphoid system, usually malignant.

7
Q

What is a melanoma? Benign or malignant?

A

A tumour of melanocytes. Some are benign, some are malignant.

8
Q

What is a mast cell tumour (mastocytoma)? Benign or malignant?

A

Tumour of mast cells. Vary in degree of malignancy.

9
Q

What is a Teratoma?

A

Germ cell tumour with elements of ectoderm, endoderm and mesoderm.

10
Q

What is a Sarcoid? What is it caused by?

A

Low grade fibrosarcoma commonly seen in the skin of horses. Caused by bovine papillomavirus infection.

11
Q

By what methods can a tumour be graded? Can you give an example of a tumour it might be used for?

A

Light microscopy (squamous cell carcinoma), Immunophenotyping (lymphoma), Detection of genetic mutations (lymphoma), Proliferation markers (MCT)