Download Malignant disease of the cervix

Malignant disease of the
cervix
Dr.Omar aldabbas
Assisstant-prof.,MUTA university
OBGYN specialist
Epidemiology
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This is a disease of sexually active women.
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There is increasing evidence that infection by certain
strains of human papilloma virus (HPV) is a factor.
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How frequent is this disease in nuns? “it is rarely seen in nuns”.
On the other hand, nuns have an increased risk of devloping
Endometrial cancer.
HPV 16, 18, and others
10-30% of sexually active women have HPV infection by
the age of 30 years.
The proportion increases if the women or her partner have
several sexual partners.
Epidemiology
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The strains HPV 16 and 18 are particularly implicated in the
development of cervical abnormality.
Smoking and immune suppression are added factors.
Incidence of cervical cancer is increasing or decreasing? Why?
After the introduction of cervical smear, the incidence of cervical
cancer is decreasing (It decreased by half or more than half!)
Now, it is the 3rd common genital cancer after endometrial and
ovarian cancer.
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The most common cancers in women differ from country to
another:
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Some countries: ovary> endometrium> cervix
Others, like the USA: Endometrium> ovary > cervix
Histological types
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The cancer is either:
1.
2.
3.
Squamous cell carcinoma (85-90%) (Because it
arises from the ectocervix)
Adenocarcinoma (arises from the endocervix)
Mixed carcinoma (adenosquamous)
The development of invasive disease
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If CIN is left untreated, after a variable length of time (may
extend over years), it may invade through the basement
membrane of the epithelium into the stroma beneath.
The estimated risk of invasion for CIN III is about 1.8 %
per year (~ 2% per year)
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Will all CIN progress to invasive cancer? No! She could have
CIN – 2% per year is the risk
Micro-invasive carcinoma of the cervix
(one type)
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Is a part of the spectrum of cervical neoplasia is a stage between CIN
and frankly invasive carcinoma.
This is considered to be a stage 1A of cervical cancer.
Dx: On histopathology, the lesion is less than 5 mm in depth and less
than 7 mm in width.
There is no vascular or lymphatic space involvement (cells have not
entered the vascular or lymphatic space).
Micro-invasive carcinoma of the cervix
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The risk of spread to local lymph nodes is very rare (nearly
nil to have LNs involvement).
The disease is usually asymptomatic.
On examination, the cervix looks normal.
The pap smear will show dysplastic cells.
The diagnosis can only be confirmed after a cone biopsy of
the cervix (not based on clinical or cytology) only a cone
biopsy
Micro-invasive carcinoma of the cervix: What is
the treatment in this condition?
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Cone excision is considered to be the only treatment needed if the
margins of the cone are free from any lesion.
If not free margins:
Total abdominal hysterectomy is indicated in those who are elderly
and completed their family.
All patients should be followed with periodic physical and Pap smear
examinations.
The 5-year survival rate following appropriate therapy is nearly
100%.
Invasive carcinoma of the cervix: anything
that is not
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The commonest symptoms are intermenstrual, post-coital
and post-menopausal bleeding.
Patients may complain of a profuse, offensive vaginal
discharge, which may be blood stained.
Pain is a late symptom of the disease
Some cases may present as bleeding during pregnancy (in
antepartum hemorrhage, local causes, one of them is
carcinoma of the cervix)
Invasive carcinoma of the cervix
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On inspection, in early stage, a small nodule or ulcer may be seen. It often
bleeds on contact\touching.
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In advanced cases, the tumor mass is larger ulcerated and friable.
As the tumor will spread locally, it may invade the upper vagina and the cervix
becomes fixed.
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The tissue of the lesion is very friable and may come to you in pieces on examination. Sometimes,
you will see local invasion to the upper vagina. Once you see such a lesion, then definitely, it is a
cancer of the cervix.
Blockage  accumulation of blood behind hemometra (Syn: Hematometra) If it
got infected  Pyometra: Large uterus palpable abdominally due to the collection of
blood and pus and obstructed outflow.
Occasionally pyometra occurs, causing uterine enlargement.
Rectal examination is needed to confirm direct spread.
Cystosopic examination is also needed to exclude invasion into the vase of the UB
The lesion is filling the whole cervix but haven’t yet invaded the wall of the vagina. So, it
can be considered stage IB
Staging of cervical cancer
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Stage 0: CIN III ( carcinoma in situ) (not really a cancer… noninvasive)
Stage 1A: micro-invasive carcinoma.
Stage 1B: invasive cancer limited to the cervix.
Stage IIA: invasion to the upper third of the vagina.
Stage IIB: invasion to the parametrium, but not to the lateral pelvic
wall.
Stage IIIA: invasion to the lower third of the vagina.
Stage IIIB: tumor reaching the lateral pelvic wall and/or obstructing
the ureter on IVU.
Stage IVA: involvement of the bladder or rectum (once they are
involved, then it is stage IVA) (Lesion is limited to the cervix, but
there is invasion of the rectum, what stage? IVA)
Stage IVB: extra pelvic spread, e.g. liver or lung metastasis.
Treatment
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Either by surgery, radiotherapy or combination of the two.
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Depends on how good a surgeon you have or how good a radiotherapy center
you has!
1B and IIA: Choice between surgery or radiotherapy. If you have a good
surgeon with low morbidity, then go to surgery. If you have a good
radiotherapy, then go to radiotherapy. Combined treatment carries a better
prognosis (preoperative radiotherapy then surgery or surgery then
radiotherapy)
All the stages after that, the answer is radiotherapy.
Surgery is by gynecologist oncologist (a gynecologist who took a subspecialty
in gynecological oncology)
In stage I and stage IIA, surgery or radiotherapy can be used, but
surgery offers lower morbidity.
In later stages, radiotherapy is the mainstay of treatment.
Surgery
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The standard surgery is Wertheim’s (VER-TIME -Ernst
Wertheim - Austrian gynecologist) hysterectomy.
This involves removal of the uterus, paracervical tissues,
upper vagina and pelvic lymphadenectomy.
This includes external iliac, internal iliac, common iliac,
obturator and presacral nodes.
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Omentum removed?
In young women, ovaries may be conserved.
Radiotherapy: either external or internal
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External beam therapy to the whole pelvis to shrink the
central tumor and to treat the possible sites of regional
metastasis.
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Internal sources placed in the upper vagina and within the
cervical canal to provide a very high dose to the central
tumor.
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The idea is reaching the invasions
If you are only aiming at the tumor itself
Addition of chemotherapy during radiotherapy increases
the cure rate by 10 %.
How to apply the internal
Point A: tumor mass
B: lateral pelvic wall
Internal: To radiate point
A
External radiation: To
radiate point B
Combined treatment
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Radiotherapy should be used after surgery if the lymph
nodes histopathology showed involvement of the lymph
nodes
Pre-operative radiotherapy can also be used in stage II to
reduce the size of the tumor prior to surgery
Chemotherapy can also be used prior to surgery
Cancer of cervix and pregnancy
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In early pregnancy (if discovered), treatment by external
radiotherapy\radiation should be started. Abortion of a
dead fetus will follow, then internal radiotherapy can be
used.
In late pregnancy, Hysterectomy or caesarean section
should be done, to be followed by appropriate treatment.
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You should never ever allow vaginal delivery. The best idea is to
perform CS then perform a hysterectomy.
Pelvic Exenteration
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This can be considered in recurrent pelvic disease or when the rectum or the bladder are
involved with no clinical evidence of distant metastases.
It is a major surgery which involve the removal of the bladder (anterior exenteration) or the
rectum ( posterior exenteration) or total exenteration.
The ureters are implanted in the ilium with terminal colostomy.
The mortality and morbidity in this operation is high.
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Palliative surgery in stage IV, the patient will have very heavy bleeding… The only way to
stop it is surgery to excise the mass. It is of 3 types, either anterior, remove uterus and
bladder, posterior, remove uterus and rectum. Total, remove bladder, rectum and uterus.
Ureter: go to small bowel..
Bowel: Colostomy
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Exenteration: Removal of internal organs and tissues, usually radical removal of the contents of a body cavity. Syn:
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evisceration(1).