Webster's New World Medical Dictionary

cancer, breast
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cancer, lung
A malignant tumor of the lung, the
major organ of respiration. Lung cancer kills more
men and women than any other form of cancer.
Eight out of 10 lung cancers are due to damage
caused by tobacco smoke. Persistent cough and
bloody sputum can be symptoms of lung cancer.
Diagnosis of lung cancer can be based on examina-
tion of sputum or on tissue examination with biopsy,
using bronchoscopy, a needle through the chest
wall, or surgical excision.
cancer, male breast
See 
breast cancer, male.
cancer, melanoma
A skin cancer that begins in
cells called melanocytes, which normally grow
together to form benign (noncancerous) moles. A
change in size, shape, or color of a mole can be a
sign of melanoma. Melanoma can be cured if it is
detected early. If it is not detected early, however, it
may spread to other areas of the body, and that can
cause death. Diagnosis is confirmed with a biopsy of
the abnormal skin. Sun exposure can cause skin
damage, which can in turn lead to melanoma. See
also 
melanoma.
cancer, multiple myeloma
See 
multiple
myeloma.
cancer, myeloma
See 
multiple myeloma.
cancer, non-Hodgkin’s lymphoma
See 
lym-
phoma, non-Hodgkin’s.
cancer, oral
A malignant tumor of the mouth
area. A sore in the mouth that does not heal can be
a warning sign of oral cancer. A biopsy is the only
way to determine whether an abnormal area in the
oral cavity is cancerous. Oral cancer is almost
always caused by tobacco (smoking and chewing)
or alcohol use. Surgery to remove the tumor in the
mouth is the usual treatment.
cancer, ovarian
A malignant tumor of the ovary,
the egg sac in a female. Women who have a family
history of ovarian cancer are at an increased risk of
developing ovarian cancer. Hereditary ovarian can-
cer makes up a small percentage of all cases of
ovarian cancer. Three hereditary patterns have been
identified: ovarian cancer alone, ovarian and breast
cancers, and ovarian and colon cancers. Ovarian
cancer is difficult to detect early because there usu-
ally are no symptoms and the symptoms that do
occur tend to be vague. Detection involves physical
examination (including pelvic exam), ultrasound,
X-ray tests, CA 125 test, and biopsy of the ovary.
Most ovarian growths in women under age 30 are
benign (noncancerous), fluid-filled cysts.