Neoplasm Nomenclature and Principles Flashcards
What tissue are most cancers derived from?
Epithelium (85% of all tumors)
What is neoplasia?
New growth that is autonomous and beyond normal physiological constraints
What is a neoplasm?
Solid mass or tumor of new growth
What is a tumor?
An unspecified mass that may or may not be neoplastic
All tumors are neoplasms (TRUE/FALSE)?
FALSE
(all neoplasms are tumors)
What is oncology?
The study of masses (cancer, tumors)
What is a benign neoplasm?
- A mass that does not have the ability to invade tissue and become malignant
- Localized and well differentiated with clear borders
What is a malignant neoplasm?
- Cancer, a mass that has the capability to invade tissues
- Poorly differentiated with unclear borders, invasive with the ability to metastasize
What is differentiation in regards to cancer?
- The degree of resemblance of a tissue to the tissue of origin
- The process of becoming different by modification
- To change from relatively generalized to specialized as in development
What does the suffix “oma” imply?
Benign growth
What does the suffix “sarcoma” imply?
Malignant growth of mesencyhmal origin
What does the suffix “carcinoma” imply?
Malignant growth of epithelial origin
What are examples of tissues that develop a “carcinoma”?
Liver, squamous cells, bronchi, trachea
What does the prefix “adeno” imply?
Neoplastic growth of glandular epithelium
What are examples of tissues that develop an “adenocarcinoma”?
Stomach, esophagus, thyroid, breast, pancreas
Differentiation of tissue involves going from _______________ to ________________?
General, specific
What is a well-differentiated neoplasm?
A neoplasm that looks similar to the tissue of origin with which it arose from
What is a poorly-differentiated neoplasm?
A neoplasm that is bizarre, disorderly, and unrecognizable compared to the tissue of origin
What does an undifferentiated neoplasm indicate about the behaviour of the neoplasm?
A neoplasm that is malignant and invasive
Patients with a well-differentiated neoplasm are (More/Less) likely to survive for a longer period of time?
More
Patients with an anaplastic neoplasm are (More/Less) likely to survive for a longer period of time?
Less
What is anaplasia?
Lack of or loss of cell differentiation in a tissue; undifferentiated
A benign neoplasm tends to be ________ differentiated?
Well
A malignant neoplasm tends to be ____________ differentiated or ____________?
Poorly, anaplastic
What is hyperchromatism?
Darkening of nuclei with chromatin clumping and large nucleoli indicative of rapid division
What is pleomorphism?
Variation in the size and shape of cells and their nuclei
What is the most important evidence of malignancy?
Invasion through the primary site
What is invasion?
Growth of a primary tumor into surrounding host tissue of origin
What are the two basic components of tumors?
- Parenchyma of proliferating neoplastic cells
- Supportive stroma of CT and blood vessels
What is desmoplasia?
Formation of abundant dense CT stroma in a cancerous tissue with a “hard and stony” feel
A nine year old girl hits the proximal part of her elbow and a bump forms. A radiograph is taken at the metaphysial region of the elbow where the bump has formed. A biopsy is taken and the bump closely resembles hyaline cartilage. The bump is easy to move upon palpation. What is the likely diagnosis?
Chondroma
What nomenclature describes a benign non-glandular epithelial tissue?
Epithelioma or papilloma
What nomenclature describes a malignant non-glandular epithelial tissue?
Carcinoma
What nomenclature describes a benign glandular epithelial tissue?
Adenoma
What nomenclature describes a malignant glandular epithelial tissue?
Adenocarcinoma
What nomenclature describes a benign fibrous tissue?
Fibroma
What nomenclature describes a malignant fibrous tissue?
Fibrosarcoma
What nomenclature describes a benign fat tissue?
Lipoma