n men, the only
cancer of reproductive health significance is cancer of the prostate. The
prostate is a gland the size of a small guava ("bubut") surrounding the urethra
immediately after it exits the urinary bladder. Its function is to contribute
secretions that contain nutrients for sperm cells as they are ejaculated to the
outside. For men who are no longer sexually active, the prostate is a
non-functional gland much like the appendix.
Unfortunately, the prostate is also the site of one of the
most common cancers of males over the age of 40. In 2006, in the United States
there were almost 220,000 new cases of prostate cancer with an estimated 27,000
deaths. During the last decade, the numbers of new cases detected have risen
sharply with the introduction of a new blood test that detects a substance known
as "prostate specific antigen" or PSA in the blood of men with prostate cancer.
For the majority of Filipino males, at about two thousand
pesos, the test is largely unaffordable. Further, the economics, epidemiology
and usual course of the disease makes publicly funded mass screening for PSA
unsound from a cost-benefit standpoint.
For one thing, an elevated PSA is non-specific since other
conditions such as urinary tract infection can cause such increases. Thus by
itself, it does not establish a diagnosis and it must be followed by ultrasound
guided needle biopsy and histological examination, a procedure that is even more
expensive.
When the diagnosis is established, treatment options vary
depending on the patient’s age. For men over the age of 65 with no other sign of
prostate disease, the preferred option is "watchful waiting" – i.e., no
intervention while monitoring PSA levels and other signs of prostate
dysfunction. For younger men, the two main options are radical surgery or the
less invasive radiotherapy modalities.
The good news is that prostate cancer generally runs a long
and indolent course. This means that very often other pre-existing conditions of
the elderly are the most likely causes of death in men who are over the age of
70.
***
Unfortunately for women, there are several cancers of
reproductive health significance that are associated with the female
reproductive system. The most common of these is breast cancer. The most
important public health intervention for cancer of the breast is early detection
and treatment. In all developed countries, mass screening by means of an x-ray
procedure known as mammography is the standard method of early detection.
Unfortunately, poor countries like the Philippines have not
made this screening available to the majority of their populations. The fact is
that the low technology intervention of choice is a good program for breast
self-examination. However, public health service providers must be truly
committed to this education-intensive method of early detection for it to be
truly beneficial to communities.
Cancer of the uterus, particularly that of the cervix (the
outermost, exposed part of the uterus), is the second most common cancer in
women especially in lower socio-economic groups. Early detection and treatment
is also the most effective public health intervention. The old reliable Pap
smear was deemed too expensive for poor countries, but with the advent of the
acetic acid smear which serves as a first screen, it may be possible for public
health providers to mount a major program of early detection.
In addition, there is now a new vaccine to prevent cancer of
the cervix. Immunization against the human papilloma virus (HPV) is known to
effectively protect against this cancer. There are two major barriers to
implementing an HPV immunization program. The first is cost – which can be
overcome with coordinated efforts between public health providers and the
suppliers of the vaccines. The second barrier is much more difficult to overcome
– puritanical religious zealots view programs to immunize young girls at puberty
as inducements to sexual promiscuity.
The other common cancer of the reproductive tract is ovarian
cancer. There is no accepted intervention designed for early detection and
treatment of this cancer. Thus these are usually diagnosed during annual
physical examinations (which should include a good pelvic examination) or when
there are symptoms of pain or a mass.
While there is no specific public health intervention for
early detection, there has recently been reported a possible preventive measure.
Researchers at Oxford University in the United Kingdom have reported a study
involving thousands of British women indicating that ovarian cancer could be
prevented by the use of the new low progesterone birth control pills. In
contrast to the anecdotal evidence usually cited by anti-birth control
extremists who claim that pills may be harmful, the evidence of protection
against ovarian cancer is solid enough for the editor of The Lancet to advocate
the promotion of their use specifically to prevent ovarian cancer.
***
Health care financing seems to have become a major issue in
the coming presidential elections in the United States. This is especially true
in the Democratic Party’s process for selecting its candidate. Observers have
pointed out that the recently withdrawn candidate, John Edwards, by his strong
advocacy of universal health care, has forced the other candidates to present
even more radical programs. John Edwards, as one American columnist put it, may
have lost the nomination but on health care he has won the argument.
***