Pathology Quiz on Neoplasia and Tumors

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What characterizes a poorly differentiated neoplasm?

  • Displays high nuclear cytoplasmic ratio
  • Typically benign with a favorable prognosis
  • Resembles mature cells of the tissue of origin
  • Composed of primitive cells with little differentiation (correct)

Which of the following features is NOT associated with nuclear hyperchromasia?

  • Increased chromatin density
  • Loss of normal nuclear morphology
  • Reduced nucleolar prominence (correct)
  • Indication of malignant transformation

Which type of tumor arises from epithelial tissue?

  • Adenocarcinoma (correct)
  • Rhabdomyosarcoma
  • Chondrosarcoma
  • Sarcoma

What is the major difference between pleomorphic adenoma and fibroadenoma?

<p>Pleomorphic adenoma combines glands and fibromyxoid stroma (D)</p> Signup and view all the answers

What is the significance of the mitotic rate in tumor evaluation?

<p>Reflects the aggressiveness of a tumor (B)</p> Signup and view all the answers

What process involves the transformation of epithelial cells into mesenchymal cells?

<p>Epithelial-mesenchymal transition (EMT) (D)</p> Signup and view all the answers

Which term describes a mass of disorganized indigenous tissue?

<p>Hamartoma (C)</p> Signup and view all the answers

Which characteristic is NOT typically observed in benign tumors?

<p>High mitotic activity (B)</p> Signup and view all the answers

What is the characteristic feature of cervical intraepithelial neoplasia (CIN)?

<p>Dysplastic changes within an epithelium (C)</p> Signup and view all the answers

What occurs during anaplastic tumor formation?

<p>Loss of normal parent cell features (D)</p> Signup and view all the answers

What risk factors are associated with Human Papilloma Virus (HPV) in the context of cervical cancer?

<p>Early age at first intercourse (B)</p> Signup and view all the answers

Which term is used to describe the process in which some features of malignancy are present but do not constitute full malignancy?

<p>Dysplasia (A)</p> Signup and view all the answers

Which term describes variability in cell size and shape associated with malignancy?

<p>Pleomorphism (A)</p> Signup and view all the answers

What best describes the relationship between tumor differentiation and prognosis?

<p>Well differentiated tumors generally have a better prognosis than poorly differentiated ones (D)</p> Signup and view all the answers

What type of malignant tumor arises from blood vessels?

<p>Angiosarcoma (B)</p> Signup and view all the answers

How is dysplasia graded?

<p>As high-grade or low-grade (D)</p> Signup and view all the answers

Which type of cells are involved in the massas of epiblast cells during gastrulation in the African clawed frog?

<p>Epiblast cells (D)</p> Signup and view all the answers

What is a primary mechanism by which tumour cells and stromal cells communicate during the invasion process?

<p>Cytokine and enzyme exchange (A)</p> Signup and view all the answers

What role do fibroblasts play in the context of tumour invasion?

<p>They produce chemoattractants like SF/HGF (D)</p> Signup and view all the answers

What physiological change occurs in the extracellular matrix during tumour invasion?

<p>It experiences a breakdown of normal tissue boundaries (C)</p> Signup and view all the answers

Which receptor is stimulated by the chemoattractants produced by fibroblasts?

<p>Met receptor (c-Met) (D)</p> Signup and view all the answers

What is the outcome of MMPs and uPA being activated on the carcinoma invadopodia?

<p>Degradation of the ECM (B)</p> Signup and view all the answers

During gastrulation, which structure is specifically formed by the convergence and extension of epiblast cells in the African clawed frog?

<p>Notochord (C)</p> Signup and view all the answers

What factors do tumour cells produce that influence the behaviour of stromal vascular cells?

<p>VEGF and bFGF (B)</p> Signup and view all the answers

What role does ECM proteolysis play in carcinoma cells?

<p>It exposes cryptic RGD sites recognized by integrins. (A)</p> Signup and view all the answers

Which signaling pathways are involved in FAK phosphorylation?

<p>Met and integrin signaling (D)</p> Signup and view all the answers

What characterizes carcinoma cells that have undergone EMT?

<p>Loss of cell–cell adhesion and enhanced motility (A)</p> Signup and view all the answers

What is a potential outcome of reverse mesenchymal–epithelial transition (MET)?

<p>Re-acquisition of an epithelioid phenotype (A)</p> Signup and view all the answers

Which factors are associated with the repression of CDH1 during tumor progression?

<p>SNAI1 and Snail (B)</p> Signup and view all the answers

What role does hypoxia play in the process of EMT?

<p>Facilitates the orchestration of CDH1 repressors (D)</p> Signup and view all the answers

Which element is considered an early marker of EMT?

<p>Snail (C)</p> Signup and view all the answers

Which of the following statements about SNAI2, ZEB1, and ZEB2 is true?

<p>They are associated with maintaining migratory behaviors. (C)</p> Signup and view all the answers

Flashcards

Cytologic Atypia

Abnormal cell characteristics indicating potential malignancy, such as enlarged nuclei and irregular shapes.

Nuclear Enlargement

Increase in the size of the cell nucleus, often indicating a problem with the cell.

Nuclear Pleomorphism

Variation in the size and shape of the cell nuclei, often seen in cancerous cells.

Nuclear Hyperchromasia

Increased staining intensity of the nucleus, suggestive of genetic abnormality or malignancy.

Signup and view all the flashcards

Metastasis

The spread of cancer cells from the original tumor to other parts of the body.

Signup and view all the flashcards

Anaplasia

Loss of differentiation in cancer cells, making them primitive and less like mature cells.

Signup and view all the flashcards

Epithelial-Mesenchymal Transition (EMT)

The process where epithelial cells gain migratory and invasive properties, becoming mesenchymal cells.

Signup and view all the flashcards

Differentiation of Tumors

How much tumor cells resemble their tissue of origin; well-differentiated cells are more like normal cells than poorly differentiated ones.

Signup and view all the flashcards

Gastrulation

The process during embryonic development where cells rearrange to form layers.

Signup and view all the flashcards

EMT

Epithelial-Mesenchymal Transition; a process where epithelial cells gain migratory properties.

Signup and view all the flashcards

Xenopus laevis

A species of frog known for its unique gastrulation process.

Signup and view all the flashcards

Involution

A type of gastrulation where a mass of cells folds inward.

Signup and view all the flashcards

Stromal cells

Supportive cells in a tissue that aid in structure and function.

Signup and view all the flashcards

Cytokine exchange

The process by which signaling proteins facilitate communication between cells.

Signup and view all the flashcards

VEGF

Vascular Endothelial Growth Factor; a signal protein that promotes blood vessel growth.

Signup and view all the flashcards

MMPs

Matrix Metalloproteinases; enzymes that degrade components of the extracellular matrix.

Signup and view all the flashcards

Growth Factors

Molecules like TGF- and EGF that promote cell growth and healing.

Signup and view all the flashcards

Proteolysis

The breakdown of proteins into smaller peptides or amino acids, often exposing binding sites.

Signup and view all the flashcards

Integrins

Proteins that facilitate cell-ECM adhesion, recognizing RGD sites exposed by ECM degradation.

Signup and view all the flashcards

Extracellular Matrix (ECM)

A network of proteins and molecules providing structural support in tissues.

Signup and view all the flashcards

Epithelial–Mesenchymal Transition (EMT)

Process where epithelial cells lose their adhesion and gain migratory properties.

Signup and view all the flashcards

Receptor Activation

Binding of growth factors to their corresponding receptors activates signaling pathways.

Signup and view all the flashcards

Cytoskeletal Remodeling

Changes in the cell's structure that facilitate movement and shape changes during EMT.

Signup and view all the flashcards

Transcription Factors in EMT

Proteins like Snail and ZEB that regulate gene expression during EMT, promoting migration.

Signup and view all the flashcards

Thyroid adenoma

A benign tumor of the thyroid gland.

Signup and view all the flashcards

Carcinoma

A malignant tumor that arises in epithelial tissue.

Signup and view all the flashcards

Adenocarcinoma

A malignant tumor originating from glandular cells.

Signup and view all the flashcards

Dysplasia

Abnormal cell growth that may progress to cancer.

Signup and view all the flashcards

Intraepithelial neoplasia

Premalignant changes occurring within an epithelium.

Signup and view all the flashcards

Cervical intraepithelial neoplasia (CIN)

Spectrum of abnormal cell changes in the cervix.

Signup and view all the flashcards

HPV (Human Papilloma Virus)

A virus linked to the development of cervical cancer.

Signup and view all the flashcards

Pleomorphic adenoma

A mixed tumor with both glandular and stroma components.

Signup and view all the flashcards

Related Documents

Neoplasia Outline PDF

More Like This

Use Quizgecko on...
Browser
Browser