Deck 4: Neoplasia

Question 1

Which of the following physical carcinogens is the cause of most skin cancers in humans?

A) Ultraviolet light
B) Infrared light
C) X-rays
D) Radon
E) Gamma rays

Answer 1

Ultraviolet light

Question 2

Carcinoma of the stomach has the highest incidence in:

A) England
B) Japan
C) United States
D) Israel
E) France

Answer 2

Japan

Question 3

Tumors composed of malignant glands or ducts are known as:

A) Adenocarcinoma
B) Carcinoma
C) Cystadenomas
D) Liposarcoma
E) Fibrosarcoma

Answer 3

Adenocarcinoma

Question 4

Human papillomavirus (HPV)has been implicated in the pathogenesis of carcinoma of the:

A) Lips
B) Cervix of the uterus
C) Liver
D) Ovaries
E) Pancreas

Question 5

The most important risk factor(s)for breast and colon cancer is (are):

A) Hormonal imbalance and advanced age
B) Smoking and promiscuity
C) Sun exposure and family history
D) Smoking
E) Family history of cancer in those locations

Question 6

The most important source of chemical carcinogens in the human habitat is:

A) Cigarette smoke
B) Asbestos
C) Air pollution
D) Food additives
E) Pesticides in the food

Question 7

Alpha-fetoprotein is a tumor marker for malignant tumors originating in the:

A) Brain
B) Lung
C) Liver
D) Uterus
E) Thyroid

Question 8

Malignant tumors composed of embryonic cells are often called:

A) Malignant islet cell tumors
B) Gliomas
C) Lymphomas
D) Blastomas
E) Teratomas

Question 9

The most common autosomal dominant disease,which affects more than 3 million Americans,presents with numerous subcutaneous neural sheath tumors and is known as:

A) Neurofibromas
B) Meningiomas
C) Neurofibromatosis type I
D) Neurofibromatosis type II
E) Wilms' tumor

Question 10

The cancer of chimney sweeps identified in the eighteenth century in England was related to a component of tar that is chemically classified as:

A) Polycyclic hydrocarbons
B) Aflatoxin B1
C) Azo-dyes
D) Naphthylamine
E) Arsenic

Question 11

Which of the following conditions is characterized by a defect of a DNA repair enzyme?

A) Neurofibromatosis
B) Hereditary polyposis coli
C) Xeroderma pigmentosum
D) Wilms' tumor
E) Hodgkin's lymphoma

Question 12

Retinoblastoma gene (RB1)is classified as a(n):

A) Oncogene
B) Tumor suppressor gene
C) Point mutation
D) Gene amplification
E) Viral oncogene inserted into the human genome

Question 13

The incidence of which cancer has been rising in the United States during the past 20 years?

A) Carcinoma of the lung
B) Carcinoma of the liver
C) Carcinoma of the stomach
D) Carcinoma of the thyroid
E) Malignant brain tumors

Question 14

Researchers who deal with neoplasia in the human populations and also study the environmental causes of tumors are known as:

A) Clinical oncologists
B) Experimental oncologists
C) Cancer oncologists
D) Cancer epidemiologists
E) Clinical epidemiologists

Question 15

A lung tumor that has spread to the brain has metastasized via:

A) Lymphatics
B) Nerves
C) Blood vessels
D) Cerebrospinal fluid
E) Pleural fluid

Question 16

Teratomas originate from:

A) Germ cells of the ovary
B) Brain cells
C) Thyroid cells
D) Endocrine cells of the pancreas
E) Fallopian tubes

Question 17

Workers employed in the chemical industry and exposed to high levels of aniline dyes are at increased risk of developing cancer of the:

A) Brain
B) Lung
C) Stomach
D) Urinary bladder
E) Testis

Question 18

Many tumors secrete their own growth factors.This form of stimulation is called:

A) Autocrine
B) Heterocrine
C) Paracrine
D) Endocrine
E) Exocrine

Question 19

Hodgkin's lymphoma is a neoplasm that typically involves the:

A) Brain
B) Lungs
C) Heart
D) Liver
E) Lymph nodes

Question 20

Benign protuberant tumors found on the skin,mouth,or larynx are called:

A) Tubular adenomas
B) Villous adenomas
C) Polyps
D) Papillomas
E) Cystadenomas