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The Other Face of Cancer by Dr Manu Kothari and Dr Lopa Mehta
Glossary
Terms have been defined with reference to
medicine in general and cancer in particular. An attempt
has been made to go beyond the mere dictionary meaning so
as to provide a wider perspective. Related words are
mentioned in parenthesis at the end of the explanation.
Adenocarcinoma.
Cancer arising in a gland
Allogenic.
Originating in a genetically different
individual, but from the same species.
Analgesic.
Pain-relieving drug, such as aspirin.
Anoci-Association.
An association based on the Hippocratic motto primum
non nocere, meaning that the least that a therapy
should do to a patient, is to do no harm.
Antigen.
A substance, that on introduction into the body,
excites a highly specific response in the form of
antibody ( a protein) and / or cells (lymphocytes). An
antigens specific reactivity with antibody/ cells
allows laboratory detection of its presence in blood or
tissue. Some cancers carry on their cells and / or
secrete into the blood antigens, of which the
carcinoembryonic antigen (CEA) is an example. CEA, found
most commonly with cancer of the gastrointestinal tract,
is detected in the laboratory by demonstrating its
reactivity with a specific antibody.
Aphthous ulcer.
Small, painful ulcer/s accompanying inflammation
of the mouth.
Arteriosclerosis.
Thickening and hardening of arteries, a common
accompaniment of aging.
Autochthonous.
Arising from an individuals own tissues;
not transplanted.
Benign.
Not threatening health or life; opposite of
malignant; non- cancerous. A benign tumour / lump has
microscopic features resembling a normal tissue.
Bronchial
cancer. A bronchus is a subdivision of the
air-passages beyond the trachea (windpipe). Cancer of the
lung usually starts in a large bronchus, and thus is
often referred to as bronchial cancer or bronchial
carcinoma.
Burkitts
tumour. A lymphoma with
characteristic microscopic picture, commoner at younger
age. Also called Burkitts lymphoma.
Cancerability.
It is the faculty of a normal cell to cancerate
and thus turn into a cancer cell.
Cancerogen.
A substance supposedly producing cancer. Also
called, carcinogen. A substance that assists a cancerogen
is called cocancerogen, and one that opposes its
action is called anticancerogen. Similarly, cocarcinogen
and anticarcinogen.
Cancerogenesis.
The production of cancer. Also called carcinogenesis.
Cancerologist.
The cancer specialist. Also called oncologist.
The speciality is called cancerology or
oncology.
Cancerotrophic.
An agent promoting the growth of cancer.
Cancerrealism.
An approach to cancer based on cancerologic,
cytologic and biologic facts. Such facts constitute cancerrealities.
Celluloma.
A lump or a mass made up of cells. - oma
as a suffix indicates swelling; hence, lipoma, fibroma,
astrocytoma, melanoma, etc.
Chemotherapy.
Thearpy by drugs.
Cholelithiasis.
Formation of stones in the biliary tract. Gall
stones.
Choriocarcinoma,
gestational. A cancer
arising from the chorionic covering of a foetus, and
growing in the uterus of the mother.
Chronic.
Any illness characterized by long duration, or
frequent recurrence over a long time, and often by slowly
progressing severity; opposite of acute.
Chronic
lymphocytic leukemia. Oftenabbreviated
as CLL. A type of slowly growing leukemia characterized
by the excessive proliferation of lymphocytes all over. A
disease mainly of the middle and old age.
Chronic myeloid
leukemia. Often abbreviated
as CML. A type of slowly progressing leukemia,
characterized by the excessive proliferation of granular
white blood cells, starting in the bone marrow and then
appearing in the blood and elsewhere. A disease mainly of
the middle and old age.
Cirrhosis. A
chronic disease characterized by progressive destruction
and hardening of the liver.
Collagen.
The fibrous protein that provides the scaffold
for the animal body, being one of the principal skeletal
substance binding cells and tissues together.
Colposcopy.
Examination of the vagina and cervix with an
instrument called colposcope that provides illumination
and magnification
Cytodifferentiation.
The process whereby a cell changes its character
to turn into another type of cell. Also called differentiation.
Cytokinetic.
Related to the process of cell division and
proliferation the science of which is called cytokinetics.
Cytologist.
One specializing in the study of cells.
(Cytology).
Cytotoxic.
Toxic or lethal to cells. X-rays and
anticancer drugs are cytotoxic agents, being
indiscriminately toxic to both normal and cancerour
cells.
Desenesce.
Rejuvenate.
Diabetes
mellitus. What is commonly
known as diabetes is medically termed as diabetes
mellitus (sweet diabetes) because of the patient passing
sugar in the urine. Such diabetes is to be distinguished
from diabetes insipidus, wherein the patient passes large
qualities of insipid urine.
Disease.
The term is derived from old French desaise
(des - absence of, and aise - ease), and
really means dis-ease or lack of ease. The etymologic
emphasis has been lost in medical science so that the
word disease is freely used even though the so-called
disease - a cancerous mass in the prostate or the breast
- in no way dis-eases the owner.
Dysplasia.
Literally, abnormality of a tissue. In current
fashion, it implies cellular abnormalities of the lining
epithelium of the cervix of the uterus, that a
pathologist recognizes as abnormal, yet not to a degree
he is willing to call cancer.
E.coli.
Short form for Escherichia coli, a bacterium
normally found in billions in the human and animal
intestine.
Ectopic.
Out of the normal place. A hormone is normally
secreted by its special gland. When it is also secreted
elsewhere by another tissue, it is called ectopic
hormone.
EKGitis.
A term to describe the inordinate faith of the
doctor or the patient in the diagnostic and prognostic
usefulness of the electrocardiogram (ECG), sometimes
abbreviated as EKG.
Follow-up. The
medical practice of periodically reassessing and
recording the condition of a patient following diagnosis
and / or treatment.
Gaussian
distribution. A theoretical
frequency distribution that is bell shaped, symmmetrical
and of infinite extent. Also called normal
distribution. Many a biologic feature, related to
health or disease, exhibits gaussian distribution.
Gerontology.
Science of aging, and of the problems of the
aged.
Grading.
A mode of describing the severity of a cancer by
grading it as Grade 1 through 4. The severity of a cancer
is assumed to be directly proportional to the departure
of its cells from normality when seen through a
microscope. A cancer belongs to Grade 1 when most of-its
cells are near-normal in appearance and arrangement, and
to Grade 4 when most cells look abnormal in appearance
and arrangement.
Histological.
Related to the study of tissue - normal or
cancerous - with a microscope. (Histology, Histologist).
Hodgkins
disease. A form of lymphoma
with special microscopic features.
Hysterectomy.
Surgical removal of the uterus.
Iatrogenic.
Produced by a doctor. Also called iatral.
Immunological.
Related to the science of immunology that
studies the nature of antigen / antibody reactions and
cells that possibly mediate the immunity (defence
mechanisms) of the body against a disease. (Tumour
immunity/ immunology, Immunotherapy).
Intercurrent
disease. The occurrence of
an unrelated disease in a cancer patient.
Leukemia. Cancer
of the white blood cells.
Linear
accelerator. Specialized
machine for X-ray treatment of cancer. Such a machine, by
the tremendous acceleration it imparts to electrons,
produces high energy, X-ray beams, that allow a patient
to be treated in one or two minutes.
Lumpolytic.
An agent that causes dissolution, albeit
temporary, of a cancerous lump
Lymphoma.
Cancer arising in lymphoid tissues. Unlike in
leukemias, the involvement of the bone marrow by the
cancerous cells, and their presence in the blood stream
are uncommon.
Malignancy.
In cancerology, used as a synonym for cancer:
hence, malignant tumour or malignant lesion. In medicine
in general, malginant implies grave severity of a
disease: thus, malignant fever, malignant hypertension,
malignant malaria. A malignant tumour shows micro-copic
features supposedly characteristic of cancer. Opposite of
benign.
Mammography.
Study of the breast by X-rays.
Melanoma.
A skin cancer arising from its pigmented cells;
can also arise from the eye, mucous membrane, and other
tissues.
Metastasis.
Spread or transfer of disease (cancer,
infection) from its site of origin to another site nor
directly connected with it. Metastatic, Metastasize).
Multifactorial
inheritance. See Polygenic
inheritance.
Mitral stenosis.
Narrowing of the mitral valve of the heart.
Nasopharyngeal
carcinoma. Cancer of the
nasopharynx, the region of the throat behind the cavity
of the nose.
Nephritis.
Inflammation of the kidney.
Nephrosis.
Non-inflamatory, degenerative disorder of the
kidney.
Neoplastic
development. Development of
cancer. Neoplasm, literally meaning new (ly
formed) tissue connotes cancer, although such process
also occurs in inflammation, wound healing, etc.
Ontolysis.
Dissolution of ones own self.
Palliative.
Any therapeutic measure that affords relief, but
no freedom from the disease. (Palliation, Palliatable).
Pernicious
anaemia. A form of anaemia
which, before the discovery of its therapy with vitamin B12
was inexorably fatal.
Polygenic
inheritance. The occurrence
of cancer in an individual is governed by many
unidentifiable genes (hence called polygenic /
multi-factorial inheritance) which in coordination with
the genes of the entire herd, determine whether or not
cancer would occur. And such genetic governance in an
individual is quantitative and not qualifative. All
humans can develop cancer; only some do,
for in them the quantitative gene effect is sufficient
enough to carry them beyond a certain genetic threshold
Polygenic inheritance has been invoked to explain the
occurrence of a wide variety of diseases ranging from
congenital malformations like cleft plata to common
diseases like peptic ulcer, heart attack, diabetes, or
hypertension.
Primary.
In cancerology, it refers to the site where the
cancer first originates; hence, primary site, primary
cancer, primary growth, and so on. When a cancer, taking
off from the primary site, establishes itself at other
additional site/s physically discontinuous from the
primary, it is said to have formed secondary or
metastatic cancer. From the secondary site, the whole
process of metastasis can be repeated.
Probability.
Etymologically and simply, it means likelihood.
Epistemologically, it implies a state of knowledge that
is less than certainly but greater than ignorance.
Epidemiologically, it means certainty at the herd, level
which, being numerically smaller than the number forming
the herd, must of necessity be a matter of chance,
likelihood or probability when expressed at an individual
level. Such measurement or quantitation of uncertainty is
called probability.
The epidemiologic concept of probability can be best
amplified by acute lymphoblastic leukemia, a form of
blood cancer. Globally, it occurs at the rate of 2 to 3
cases per 100,000 population per year with little
variation from country to country. Here, the certainty is
2 to 3 cases per 100,000 people; who will get it is the
quantified uncertainty or probability viz., 1 in 50,000
or 1 in 33,333.
Prognosis.
The act or art of foretelling the course of a
disease; also, it means the prospect of survival and
recovery from a disease. Prophylactic. A
preventive or protective measure against a disease.
(Prophylaxis).
Radical
therapy. Drastic and supposedly thorough
treatment for a cancer. Usually applied to surgery, but
also to other modes of therapy and to therapeutic
combinations. Supraradical therapy represents the
extreme of therapeutic radicalism.
Radiotherapy.
Treatment of cancer(or any other disease) by
X-rays.
Recombinant
E.coli. A type of bacterium
with a new combination of DNA assembled in the laboratory
through the recently developed technics of genetic
engineering.
Recruitment.
When a normal cell cancerates to join the
already existing cancer, it is called recruitment or
neocanceration.
Remission.
A temporary abatement of the symptoms of a
disease.
Sarcoma.
Cancer arising in the connective tissue -
especially bone, cartilage, muscle, and fascia. Sarcoma
differs from carcinoma in that the latter arising from
the cells lining the skin and internal organs, or the
cells forming glands such as the liver, thyroid,
pituitary, etc. The term cancer encompasses both
carcinoma and sarcoma, and is freely used, e.g., bone
cancer, breast cancer, stomach caner, and so on.
Senesce. Grow
old; wither.
Smegma.
The cheesy, sebaceous matter that collects
between the glans penis and foreskin in a male, or around
the clitoris and labia minora in a female.
Spontaneous.
Not induced, as by a cancerogen.
Stage.
Staging is the clinical practice of assessing
and expressing the evolution and the spread of cancer in
a patient. Stages are expressed in numbers and / or
letters, e.g., O, I,II, III, IV for cervical or vaginal
cancer, or O,A, B1 ,B2 , C, D1
, D2 , for bladder cancer. Stage O
indicates minimal cancer; IV/D2 indicates most
advanced cancer. Staging is to be distinguished from
grading, a judgement passed on the microscopic features
of a cancer.
Stricture.
Abnormal narrowing of the lumen of a tubular
organ (gullet, intestine, windpipe), by various causes
such as inflammation, cancer, etc.
Syndrome.
A set of symptoms and signs that occur together
in disease, a symptom complex.
Thanatologists.
Specialists in thanatology, the science
of death and dying.
Thermography.
The technique of converting the temperature
pattern in an organ into a photographic image, as an aid
to diagnosis.
Thrombophlebitis,
migrating. Also called thrombophlebitis
migrans. It means the occurrence of inflammation and
thrombosis of veins at multiple sites and of a shifting
nature; occurs uncommonly in cancers as of the stomach or
pancreas.
Trigeminal
nerve. The nerve carrying
sensations from the head and face region, and innervating
muscles of mastication.
Tumour.
A lump, swelling, or a protuberance. Often used
as connotative with cancer.
Tumour systems.
Cells from a cancer that arose once upon a time
in an animal are cultured over the years, by being
serially bred in test tubes and animals. Such cells when
inoculated in specially prepared animals form masses that
are called transplanted cancer. Such
cancers constitute tumour systems against
which drugs are tested.
Xerography. Also
called xeroradiography. Study of breast by
obtaining its image by a technique similar to that
operating in a XEROX machine.
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