360 likes | 704 Views
Diseases of the Vagina Azza AlYamani Prof. Obstet. & Gynecol. Anatomy of the vagina * it is a flattened muscular tube extending from the hymenal ring at the introitus up to the fornices . It is about 8 cm in length. * the posterior fornix ( Douglus pouch ) allows
E N D
Anatomy of the vagina * it is a flattened muscular tube extending from the hymenal ring at the introitus up to the fornices . It is about 8 cm in length. * the posterior fornix (Douglus pouch) allows easy access to the peritoneal cavity from the the vagina by culdocentesis or colpotomy. * its epithelium is non-keratinized squamousin type normally devoid of mucous glands and hair follicles.
Structural and Benign Neoplastic Conditions : (1)Urethral diverticula * small sac-like projections in the anterior vaginal wall along the posterior urethra, it may or may not communicate with the urethra. it can cause : = recurrent urinary tract infections. =dyspareunia. *treatment : *urethral dilatation or *surgical excision of the diverticulum.
(2) Bartholin’s cyst * it is the most common vulvo vaginal mass. It presents as swelling postrolateral in the introitus usually unilateral , 3cm in diameter. It is not infected but can be symptomatic. * after 40 y. it is necessary to palpate the base of the cyst to rule out carcinoma. *teatment : by marsupialization.
*Bartholin abscess * infection of the gland may result from blockage and accumulation of purulent material and a large painful inflammatory mass can develop. * The treatment by incision of the abscess and left drain in place for 2-4 weeks.
(3) Inclusion cysts * result from infolding of the vaginal epithelium, located in the posterior or lateral wall of the lower 1/3 of the vagina. * They are most frequently associated with lacerations from delivery or surgery. They are treated by surgical excision. (4) Endometriotic cysts * are endometriotic implants located in the upper 1/3 of the vagina. * presents as black cysts which may bleeds at the time of menstruation. * they are most common in an episiotomy wound.
(5) vaginal adenosis * multiple mucus – containing vaginal cysts rarely give symptoms. * common in daughters of women who took di ethyl stilboesterol ( DES) during pregnancy. (6) Prolapse as ; cystocele , rectocele and enterocele.
(7) Fistula as ; vesico vaginal , recto vaginal and uretero vaginal fistulas. They may result from obstetric or surgical trauma , invasive cancer and radiation therapy. (8) Erosive lichen planus erythematous papules involve vagina as well as vulval vestibule . Condylomaacuminata ,flat warts ( HPV) and herpes simplex infections can be found in the vaginal vault.
(9) Gartner’s duct cyst * aregenerally thick-walled , soft cystsresulting from embryonic remnants. Gartner′s cyst arise from the remnant of the Wolffian duct . * they vary in size from 1 – 5cm , found on the antero lateral walls in the upper ½ of the vagina and more laterally in the lower vagina. * most of them are asymptomatic. * require no intervention. if ttt is required , marsupialization is effective and safer than excision.
In summary Benign Conditions: 1. urethral diverticula. 2. Bartholin’s cysts & abscess. 3. inclusion cysts. 4. endomeriotic cysts. 5. vaginal adenosis. 6. prolapse. 7. fistula. 8. erosive lichen planus. 9. Gartner’s duct cyst.
Vaginal Intraepithelial Neoplasia (VAIN) VAIN or carcinoma in situ : * much less common than CIN and VIN. * occurs in the upper 1/3 of the vagina. * caused by HPV infection or after irradiation for cervical cancer . * women with past history of in situ or invasive ca.cx or ca. vulva are at increased risk.
*Diagnosis by: =Pap smear is abnormal. =colposcopy. findings are similar to cervical lesions. abnormal epithelial proliferation and maturation above the basement membrane. VAIN I : inner 1/3 . VAIN II: inner 2/3 . VAIN III: full thickness involvement. =vaginal biopsy directed by colposcopy & Lugol′s iodine.
* management =vaginal vault lesion surgical excision to exclude invasive cancer. =multifocal lesions laser therapy or topical 5 fluorouracil. =extensive disease total vaginectomy and neovagina using a split thickness skin graft.
In summary VAIN diagnosis: 1. Pap smear. 2. colposcopy. 3. vaginal biopsy. management : 1.vaginal vault lesion. 2. multifocal lesions. 3. extensive disease.
Vaginal Cancer Squamous Cell Carcinoma Clear Cell Adenocarcinoma rare cancer
Squameous Cell Carcinoma of the Vagina * uncommon tumor. * mean age 60 – 70 years. *30% have a history of insitu or invasive cervical cancer that was treated at least 5ys earlier. *50% of lesions are in the upper1/3 of vagina on the posterior wall.
*Symptoms: = vaginal bleeding. = vaginal discharge. = urinary symptoms. *examination: ulcerative , exophytic and infiltrative growth patterns.
*pattern of spread: =direct invasion to bladder ,urethra or rectum or progressive lateral extension to the pelvic side wall. =lymphatic to the obturator ,internal iliac and external iliac nodes. lesions in the lower vagina drains to the inguino femoral nodes. =hematogenous is uncommon until the disease is advanced.
Staging is made clinically by: * chest X-ray. * pelvic & abdominal CT. * MRI for metastatic spread & bulky pelvic and para aortic lymph nodes. * PET (position emission tomography) to look for metastatic disease.
Management 1. Radiotherapyor chemo radiotherapy are the main methods of treatment for 1ry vaginal cancer. 2. Radical surgery has a limited role : *Radical hysterectomy + radical vaginectomy+ pelvic lymphadenectomy, for stage 1 in the posterior fornix. *Pelvic exenteration with creation of a neovagina ,if LN. are free.
Clear Cell Adenocarcinoma *An association between in utero exposure to di ethyl stilbesterol (DES) and the latter development of clear cell carcinoma in the vagina was reported in 1971. *Vaginal adenosis (columnar epithelium) is the most common anomaly ,present in 30% of exposed females.
* this tissue behaves similarly to the columnar epithelium of the cervix & is replaced initially by immature metaplasticsquamous epithelium. * the risk for developing a clear cell adenocarcinoma following DES exposure in utero is only 1/1000 . * the mean age is 19years, rare before 14y. few cases reported in women in their 40s & 50s.
*Treatment : for early tumor , radical hysterectomy and vaginectomy ( cereation of neovagina) or radiation therapy is effective. *The 5-year survival rate is 80%, which is better than that for squameous cell carcinoma of the vagina.