Basics of Neoplasia Flashcards

1
Q

Which species can get cancer?

A

Any multicellular species
ie. plants, sharks, etc

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2
Q

What is neoplasia?

A

New growth

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3
Q

What is neoplasm?

A

Solid new growth

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4
Q

What is a tumor?

A

Any nonspecific mass

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5
Q

What is oncology?

A

Study of tumors/masses

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6
Q

What is a benign neoplasm?

A

Not cancer; cannot invade

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7
Q

What is a malignant neoplasm?

A

Always cancer; can invade

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8
Q

What is differentiation?

A

Degree of resemblance of a tissue to the tissue of origin

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9
Q

Describe well-differentiated neoplasm

A

Kind of looks normal and tends to be benign

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10
Q

Describe poorly-differentiated neoplasm

A

Doesn’t look normal

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11
Q

Describe undifferentiated/anaplastic neoplasm

A

Looks totally different, acts different, tends to be malignant

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12
Q

Pathologists employ the concept of differentiation to…

A

develop a prognosis once a tentative diagnosis of neoplastic disease has been made

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13
Q

Patients with a well-differentiated neoplasm are more likely to…

A

survive for a longer period of time or may be completely cured with treatment

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14
Q

Patients with an anaplastic neoplasm are more likely to…

A

experience a lower survival rate and/or increased risk of mortality

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15
Q

What are the features of anaplasia?

A
  • Cellular pleomorphism and/or tumor giant cells
  • Hyperchromatism of nuclei
  • Prominent nucleolus
  • Frequency of mitoses
  • Disorientation of cells/loss of architecture
  • Metastasis
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16
Q

All neoplasms have which two components?

A
  • Parenchyma
  • Stroma
17
Q

What is parenchyma?

A

The proliferating neoplastic cells (by which the tumor is named)

18
Q

What is stroma?

A

Fibrous connective tissue and blood vessels

19
Q

If stromal component is minimal, the neoplasm will be…

A

soft and fleshy

20
Q

If there is an abundance of stroma, neoplasm will be…

A

dense and hard

21
Q

What is desmoplasia?

A

Abundant stroma in neoplasm making it dense and hard

22
Q

Which type of cells are the most common to proliferate into cancer?

A

Epithelial cells (especially linings)

23
Q

Give examples of epithelial linings that normally proliferate under normal conditions

A
  • Respiratory epithelium
  • Gastro-intestinal linings
  • Genito-urinary tract
  • Skin
24
Q

Glandular linings are also epithelium
Give an example of glandular lining that normally proliferates under normal conditions

A

Mammary gland

25
Q

Do ovaries and testes normally proliferate under normal conditions?

A

Yes, they’re always kind of dividing

26
Q

Does bone marrow normally proliferate under normal conditions?

A

Yes

27
Q

Activity of myoblasts, organ hypertrophy, and fetal tissue growth are all examples of…

A

tissues normally proliferating under normal conditions

28
Q

Explain the proliferation of wound healing and possibility of mutation

A

Wound healing must recruit and proliferate cells
Increased turnover leads to increased mutation