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Why must women preserve their ovaries?
A hysterectomy (removal of the uterus) and bilateral
oophorectomy (the removal of both ovaries) are the mainstays of therapy for
the management of endometriosis following the failure of medical treatment.
The ovaries are removed with the view to remove oestrogen milieu (produced
by the ovaries). This is done due to the fact that the oestrogen helps
endometriosis grow. However, when a hysterectomy and oophorectomy are
undertaken, the endometriosis itself is not removed.
If the
endometriosis itself is completely removed, there is no need for the ovaries
to be removed.
Post menopausal
ovaries until the age of 80 years produce up to 50% of male hormones
(testosterone and androstenedione) which are converted in body fat, muscles
and skin into the female hormone Oestrogen. Both male and female hormones
are important for the body in terms of long term survival and the quality of
life of women.
The life
expectancy of women is now 78 years and so long term health issues are
important.
The removal of
the both ovaries may not relieve all the symptoms of endometriosis
(Ref: Clayton 1999; Metzger DA et al 1991;
Redwine DB 1994; O’Connor DT 1987).
Moreover, the removal of both ovaries has adverse effects on the body which
are listed below.
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Loss of hormones due to removal of both
ovaries (surgical menopausal) results in menopausal symptoms which are
abrupt and dramatic (hot flushes, night sweats ,lack of sleep, vaginal
dryness resulting in painful sex, depressed mood, lethargy/irritability,
impaired body self image).
-
Male hormones (androgens) are critical for
the maintenance of optimal levels of sexual functioning in
postmenopausal women. The loss of the ovaries results in decreased
sexual drive, decreased general sense of well being, adverse changes in
libido (desire for sex) and orgasmic response.
(Barbara B, et al. 1987. Psychosomatic Medicine),
(Sands R. 1995. Am J Med)
-
Loss of hormone Androgen (increases bone
formation) and Oestrogen (inhibits bone resorption) due to removal of
both ovaries (Surgical menopausal) results in Increased risk of bone
fracture resulting in increased morbidity and Mortality.
(Davidson B J. 1982. J Clin Endocrinol
Metab) (Cummings SR. 1998. NEJM, (Melton LJ. 2003. J Bone Miner Res
),(Graham S Keens,et al. 1993. BMJ)
-
Loss of hormones due to removal of both
ovaries (surgical menopausal) increases the risk of cardiovascular
(heart) disease, the major cause for death for women. (Wuest
JH, 1953. Circulation), (Colditz GA,et al. 1987. NEJM), ( (GA Colditz,et
al. 1987. NEJM), ( Stoney CM. 1997. Health Psychol), , (Hasia J,et al.
WHI. 2003.Am J Cardiol) Kalantaridou SN, et al. 2004. Clin Endocrinol
Metab)
-
Women have to go on to long term HRT
(Hormone Replacement Treatment) if both ovaries are removed (Surgical
menopausal) especially at a young age. Long term use of HRT increases
risk of breast cancer, deep vein thrombosis (DVT - clots in the legs)
resulting in pulmonary embolism (clots migrating to the lungs), strokes
and coronary heart disease. In addition there are issues of cost and
patient compliance. (WHI (Women
Health Initiative), HERS study (Heart & Estrogen / Progesterone
replacement study), A Million women study)
-
There are increased risks of recurrence of
endometriosis with prolonged use of HRT. The recurrent disease may be
more severe than the original disease with a greater chance that the
ureters (tubes carrying urine to the bladder from the kidney) will be
affected. In those patients where ureter has been affected, as many as
25% sustain irreversible kidney damage due to delay in diagnosis.
(Moore JG. 1979, Am J Obstet Gynecol),
(Lam AM. 1992, Aust NZ Obstet Gynaecol), ( Matorras R. 2002, Fertil
Steril),
-
There have been more than 30 cases
reported in literature where patients developed cancer in the residual
endometriosis after prolonged unopposed Oestrogen (HRT).
(Soliman NF et al. 2006. Climacteric)
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