CIN-I, or low-grade cells, with marked HPV effect.
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The next case was in her 30s. The patient went to her gynecologist and had a cone excisional biopsy for the workup of previously diagnosed CIN. On cone excisional biopsy just on lower power, one could see some of these endocervical glands had a fair degree of architectural atypia or complexity in that they had some budding or protuberances. On higher power, one could see an abrupt change in the endocervical glands from normal endocervical glandular epithelium to neoplastic epithelium. The normal endocervical glandular epithelium has a very small basally-locally nucleus and abundant cytoplasm with mucin. In addition, normal endocervical glands should very rarely have mitotic figures. Neoplastic epithelium is very different; it has very crowded, pseudostratified cells, the nuclei are very cigar-shaped, elongated and hyperchromatic and often you may be mitotic activity. The endocervical stroma surrounding this appears fairly normal, which is very important, because this lesion represents adenocarcinoma in situ. In situ is retained within the basement membrane and there is no invasion. By no invasion, I mean that there is no endocervical reaction and the abrupt change is very characteristic of adenocarcinoma in situ thirdly, the depth of glands are not beyond the level of normal endocervical glands. Adenocarcinoma in situ is very characteristic for this. In other places in this patient there was CIN-III, severe dysplasia. Here, the full thickness of the epithelium is occupied by small, basaloid, undifferentiated cells with a lot of nuclear crowding, pleomorphism and disorganization and the presence of mitotic figures. So this is an example of severe dysplasia, or carcinoma in situ. Severe dysplasia involving the superficial endocervical glands may be mistaken for invasive carcinoma, because it appears to go into the underlying stroma. I do not call this invasive carcinoma is because the borders of the gland are very smooth and regular and the stroma is very normal looking and is not reactive. In invasive carcinoma, the stroma tends to be more reactive and the borders tend to be very irregular and shaggy. I would call this severe dysplasia involving an endocervical gland. The hint is the endocervical glandular epithelium.
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Here is the case of a 28-year-old female w ho presented with a very large ulcerating and necrotic mass on the cervix. The preoperative diagnosis from the clinician was carcinoma. On biopsy, there was an area of ulceration, then endocervical stroma with lots of congested big vessels. On higher power, the area of ulceration showed numerous acute and chronic inflammatory cells. In these areas of ulceration were very large multinucleated cells with rather intranuclear ground glass-type inclusions. These are very characteristic of the herpes virus. This was a case of herpes cervicitis. One of the reasons I chose to bring this case to you today is because it is an example of a benign inflammatory process of the cervix and because it clinically, as in this case, can be mistaken for carcinoma. The herpes virus received considerable attention many years ago in its role in the pathogenesis of cervical carcinoma. Since then, there have been numerous conflicting studies as to whether or not it does play a role. Some studies support the association of herpes cervicitis with cervical carcinoma and its precursor lesions, while other studies refute it. It appears that further studies are needed to define the role better in the pathogenesis ofo cervical carcinoma. The cervical involvement in patients with primary herpes genital lesions is usually around about ninety percent. In patients with recurrent genital herpes, involvement of the cervix is about twelve to twenty percent.
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The second case is a 30-year-old lady who went to her gynecologist for a routine checkup and on Pap. smear. smear she was shown to have atypical cells, most likely dysplastic in nature. Thereafter, a biopsy was performed. Normal squamous epithelium of the cervix is a single basal cell layer, which is very orderly and organized. The cells in the basal cell layer are small and have a scant amount of cytoplasm. If one is going to see mitoses, normally it will be seen in the basal cell layer. As the cells mature, the nuclei get smaller and there becomes more abundant cytoplasm with increasing amounts of glycogen. At the top, the nuclei are very small and slightly spindle shaped. This is the underlying endocervical stroma. Our patient’s squamous epithelial layer is very different. She had very atypical cells in the more superficial layers. The basal cell layer was slightly thickened and slightly disorganized, but not particularly so. On higher power, koilocytotic atypia was noted. There was nuclear enlargement, nuclear hyperchromasia, which means that the chromatin was very, very dark, and there was marked wrinkling and irregularity of the nuclear membrane. In addition, one could see perinuclear cytoplasmic vacuolization and in some cells, showed multinucleation. These are the cytopathic effects of the human papilloma virus. The terminology for cervical cancer precursor lesions includes two groups of thought. The WHO and the International Society of Gynecologic Pathologists have a three-tier system – Mild dysplasia to severe dysplasia. Bethesda has adopted a two-tier grading system – the mild dysplasias are called the low-grade squamous intraepithelial lesions and the higher-grade cells will basically incorporate both the moderate dysplasia and the severe dysplasia. The grading of the cervical intraepithelial neoplasia cells is basically based on the proportion of epithelium occupied by those very basaloid, undifferentiated cells – the cells at the base. Cheap cymbalta online. This basically reflects progressive loss of epithelial maturation. The lower third of the epithelium is occupied by these type of cells; moderate occupies the lower third to two-thirds; severe occupies two-thirds to full thickness. It is very important to note that even if the basal cell layer is orderly and you don’t have many basaloid undifferentiated cells in the lower third, but you have marked HPV effect, that is still classified as mild dysplasia with HPV effect. As you know, the precursor lesions are associated with the human papilloma virus. The low-grade lesions tend to be associated with any of the anogenital HPVs. The higher-grade lesions, however, are associated with 16, 18, 31 and 33, which is important to remember. So our patient has mild dysplasia.
A. Intravesical Chemotherapy: Immuno- or chemotherapeutic agents can be delivered directly into the bladder by a urethral catheter. They can be used to eradicate existing disease or to reduce the likelihood of recurrence in those who have undergone complete transurethral resection. Such therapy is more effective in the latter situation. Most agents are administered weekly for 6–12 weeks. The use of maintenance therapy after the initial induction regimen may be beneficial. Efficacy may be increased by prolonging contact time to 2 hours. Common agents include thiotepa, mitomycin, doxorubicin, and BCG, the latter being the most effective agent when compared with the others. Side effects of intravesical chemotherapy include irritative voiding symptoms and hemorrhagic cystitis. Systemic effects are rare. Patients who develop symptoms from BCG may require antituberculous therapy.
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B. Surgical Treatment: Although transurethral resection is the initial form of treatment for all bladder cancers as it is diagnostic, allows for proper staging, and will control superficial cancers, muscle infiltrating cancers will require more aggressive treatment. Partial cystectomy may be indicated in patients with solitary lesions and those with cancers in a bladder diverticulum. Radical cystectomy entails removal of the bladder, prostate, seminal vesicles, and surrounding fat and peritoneal attachments in men and in women also the uterus, cervix, urethra, anterior vaginal vault, and usually the ovaries. Bilateral pelvic lymph node dissection is performed simultaneously.
Urinary diversion can be performed using a conduit of small or large bowel. However, continent forms of diversion have been developed that avoid the necessity of an external appliance.
C. Radiotherapy: External beam radiotherapy delivered in fractions over a 6- to 8-week period is generally well tolerated, but approximately 10–15% of patients will develop bladder, bowel, or rectal complications. Unfortunately, local recurrence is common after radiotherapy (30–70%). Increasingly, radiotherapy is being combined with systemic chemotherapy in an effort to improve local and distant relapse rates.
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D. Chemotherapy: Fifteen percent of patients with newly diagnosed bladder cancer will present with metastatic disease, and 40% of those thought to have localized disease at the time of cystectomy or definitive radiotherapy will develop metastases usually within 2 years after the start of treatment. Cisplatin-based combination chemotherapy will result in partial or complete responses in 15–35% and 15–45% of patients, respectively.
Combination chemotherapy has been integrated into trials of surgery and radiotherapy. It has been used before each in an attempt to preserve the bladder and decrease recurrence rates. Alternatively, it has been employed postoperatively in patients who have undergone cystectomy and have been found to be at high risk of recurrence. In current practice, adjuvant chemotherapy when indicated—ie, when the primary tumor invades perivesical fat or adjacent organs or when lymph nodes are found to have metastatic disease—is being offered mainly to patients being treated with radical cystectomy. It is used less often for patients with unresectable disease (extension to pelvic side wall).
T: Primary tumor
Tx Cannot be assessed
T0 No evidence of primary tumor
Tis Carcinoma in situ (CIS)
Ta Noninvasive papillary carcinoma
T1 Invasion into lamina propria
T2 Invasion into superficial layer of muscularis propria
T3a Invasion into deep layer of muscularis propria
T3b Invasion through serosa into perivesical fat
T4a Invasion into adjacent organs
T4b Invasion into pelvic sidewall
N: Regional lymph nodes
Nx Cannot be assessed
N0 No regional lymph node metastasis
N1 Metastasis in a single lymph node £ 2 cm
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N2 Metastasis in a single lymph node > 2 cm and < 5 cm or multiple
nodes none > 5 cm
N3 Metastasis in lymph node > 5 cm
M: Distant metastasis
Mx Cannot be assessed
M0 No distant metastasis
M1 Distant metastasis present
The natural history of bladder cancer is based on two separate but related processes: tumor recurrence and progression to higher stage disease. Both are related to tumor grade and stage. At initial presentation, approximately 50–80% of bladder cancers will be superficial: Ta, Tis, T1. Lymph node metastases and progression are uncommon in such patients when they are properly treated, and survival is excellent at 81%. Patients with superficial cancers (Ta, T1) are treated with complete transurethral resection and the selective use of intravesical chemotherapy. The latter is used to prevent or delay recurrence. Patients who present with large, high-grade, recurrent Ta lesions, T1 cancers, and those with carcinoma in situ are good candidates for intravesical chemotherapy. Patients with more invasive (T2, T3) but still localized cancers are at risk of both nodal metastases and progression, and they require more aggressive surgery, irradiation, or the combination of chemotherapy and selective surgery or irradiation due to the much higher risk of progression compared to patients with lower-stage lesions. Patients with evidence of lymph node or distant metastases should undergo systemic chemotherapy initially.
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Ninety-eight percent of primary bladder cancers are epithelial malignancies, with the majority being transitional cell carcinomas (90%). These latter cancers most often appear as papillary growths, but higher-grade lesions are often sessile and ulcerated. Grading is based on histologic architecture: size, pleomorphism, mitotic rate, and hyperchromatism. The frequency of recurrence and progression is strongly correlated with grade. Whereas progression may be noted in few grade I cancers (19–37%), it is common with poorly differentiated lesions (33–67%). Carcinoma in situ is recognizable as a flat, nonpapillary, anaplastic epithelium and may occur focally or diffusely, but it is most often found in association with papillary bladder cancers. Its presence identifies a patient at increased risk of recurrence and progression.
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Adenocarcinomas and squamous cell cancers account for approximately 2% and 7% (respectively) of all bladder cancers detected in the USA. The latter is often associated with schistosomiasis, vesical calculi, or chronic catheter use.
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Bladder cancer staging is based on the extent of bladder wall penetration and the presence of either regional or distant metastases. The TNM classification of the American Joint Cancer Committee for bladder cancer is shown in Table 23–11.
Bladder cancer is the second most common urologic cancer. Bladder cancer occurs more commonly in men than women (2.7:1), and the mean age at diagnosis is 65 years. Cigarette smoking and exposure to industrial dyes or solvents are risk factors for the disease and account for approximately 60% and 15% of new cases, respectively.
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Clinical Findings
A. Symptoms and Signs: Hematuria – gross or microscopic, chronic or intermittent—is the presenting symptom in 85–90% of patients with bladder cancer. Irritative voiding symptoms (urinary frequency and urgency) will occur in a small percentage of patients as a result of the location or size of the cancer. Most patients with bladder cancer will fail to have signs of the disease because of its superficial nature. Masses detected on bimanual examination may be present in patients with large-volume or deeply infiltrating cancers. Hepatomegaly or supraclavicular lymphadenopathy may be present in patients with metastatic disease, and lymphedema of the lower extremities may be present as a result of locally advanced cancers or metastases to pelvic lymph nodes.
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B. Laboratory Findings: Urinalysis will reveal hematuria in the majority of cases. On occasion, it may be accompanied by pyuria. Azotemia may be present in a small number of cases associated with ureteral obstruction. Anemia may occasionally be due to chronic blood loss or to bone marrow metastases. Exfoliated cells from normal and abnormal urothelium can be readily detected in voided urine specimens. Cytology may be useful in detecting the disease at the time of initial presentation or to detect recurrence. Cytology is very sensitive in detecting cancers of higher grade and stage (80–90%) but less so in detecting superficial or well-differentiated lesions (50%). Sensitivity of detection using exfoliated cells may be enhanced by flow cytometry.
C. Imaging: Bladder cancers may be detected using intravenous urography, ultrasound, CT, or MRI where filling defects within the bladder are noted. However, the presence of cancer is confirmed by cystoscopy and biopsy, so imaging is useful primarily for evaluating the upper urinary tract and in staging the more advanced lesions.
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D. Cystourethroscopy and Biopsy: The diagnosis and staging of bladder cancers is made by cystoscopy and transurethral resection. If cystoscopy—performed usually under local anesthesia—confirms the presence of bladder cancer, the patient is scheduled for transurethral resection under general or regional anesthesia. A careful bimanual examination is performed initially and at the end of the procedure, noting the size, position, and degree of fixation of a mass, if present. Any suspicious lesions are resected using electrocautery. Resection is carried down to the muscular elements of the bladder wall so as to allow complete staging. Random bladder and, on occasion, prostatic urethral biopsies are performed to detect occult disease elsewhere in the bladder and, therefore, identify patients at high risk of recurrence and progression.