Dr. Abdelaty Shawky Dr. Gehan Mohamed

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Presentation transcript:

Dr. Abdelaty Shawky Dr. Gehan Mohamed Bladder Carcinoma Dr. Abdelaty Shawky Dr. Gehan Mohamed

Learning objectives 1- understand definition of bladder carcinoma 2- identify commonest age and sex incidence 3- Discuss risk factors for the development of bladder carcinoma. 4- List microscopic types of bladder carcinoma. 5- identify clinical presentation of these patients and what are investigations needed to determine the grade and stage of the tumor. 6- list complications and methods of treatment of bladder carcinoma.

Bladder Carcinoma Definition: malignant tumor arising from the epithelial lining of the urinary bladder. (N.B normal epithelial lining of urinary bladder is transitional epithelium but it can change to squamous epithelium or columnar type under the effect of continuous irritation by inflammation, or stone formation)

Transitional epithelium (urothelium) lining the normal urinary Bladder.

Epidemiology of Bladder Carcinoma Carcinoma of the bladder is more common in males than females, in industrialized than in developing nations, and in urban than in rural dwellers. The male to female ratio for transitional cell tumors is approximately 3:1. About 80% of patients are between the ages of 50 and 80 years.

* Risk Factors for Bladder Cancer: 1. Cigarette smoking: is clearly the most important influence, increasing the risk threefold to sevenfold, depending on the pack-years and smoking habits. 50% to 80% of all bladder cancers among men are associated with the use of cigarettes, cigars and pipes. 2. Industrial exposure to naphthylamine as present in aniline dye used in rubber industries. The cancers appear 15 to 40 years after the first exposure. Cigarette smoking - #1 avoidable risk factor

3. Schistosoma haematobium: infections in areas where these are endemic (Egypt, Sudan) are an established risk. The ova are deposited in the bladder wall and incite a brisk chronic inflammatory response that induces progressive mucosal squamous metaplasia and dysplasia and, in some instances, neoplasia. Seventy per cent of the cancers are squamous, the remainder being urothelial cell carcinoma.

4. Long-term use of analgesics. 5 4. Long-term use of analgesics. 5. Heavy long-term exposure to cyclophosphamide, an immunosuppressive agent, induces, as noted, hemorrhagic cystitis and increases the risk of bladder cancer. 6. Prior exposure of the bladder to radiation: often performed for other pelvic malignancies, increases the risk of urothelial carcinoma. In this setting, bladder cancer occurs many years after the radiation.

7. Bladder stones: cause chronic irritation to the mucosa so increase risk for squamous cell metaplasia then cancer.

*Histologic types of bladder carcinoma: 1. Transitional cell carcinoma. TCC in situ. Papillary (superficial) TCC carcinoma. Invasive TCC . 2. Squamous cell carcinoma: - On top of squamous metaplasia. 3. Adenocarcinoma.

Papillary carcinoma

Fungating carcinoma of UB

TCC in situ

Superficial papillary TCC

Papillary transitional cell carcinoma

Papillary Transitional cell carcinoma

Infiltrating transitional cell carcinoma

Squamous metaplasia in bladder

Squamous cell carcinoma showing keratinized nests of squamous epithelium

Adenocarcinoma : tumor cells form glands with malignant criteria , and deeply infiltrating

* Clinical Manifestations of Bladder CA 1. Hematuria (80-90%): Generally painless and may be gross or microscopic hematuria. 2. Pain: often reflects tumor location Lower abdominal pain – Bladder mass Rectal discomfort & perineal pain – Invasion of prostate or pelvis. Flank pain - Obstruction of ureters The bladder is a source of gross hematuria (40%), but benign cystitis (22%) is a more common cause than bladder CA (15%). Microscopic hematuria is more commonly of prostate origin (25%); only 2% of bladder CAs produce microscopic hematuria.

3. Other urinary Symptoms: Frequency, urgency, nocturia due to irritation of the mucosa or due to decrease bladder capacity.

* Investigations for Bladder Cancer: Urinary Cytology: to detect any desquamated malignant cells. Cystoscopy: regardless of cytology results. TURB (Transurethral resection of bladder tumor) for all visible tumors to determine histology & depth of invasion

4. Imaging: Ultrasonography CT, or MRI - Can determine the extent of tumor spread (e.g. into perivsesical fat, prostate or vagina, LNs) CT chest / abdomen, MRI, radionuclide imaging of skeleton to assess for distant metastasis. Selective retrograde catheterization of the ureters up to the renal pelves to assess for upper tract dz. The mainstay of dx & staging of bladder CA is cystoscopic eval, incl exam under anesthesia to determine if there is a palpable mass and, if so, whether it is mobile. A non mobile tumor mass indicates dz extending beyond the wall of the bladder & invading into regional organs (eg, prostate, vagina, or muscles along the pelvic sidewall); these tumors are unlikely to be surgically resectable. The bladder is visually inspected to detail the size, number, location, and growth pattern (papillary or flat) of all lesions. U/S, CT, and/or MRI may help to determine whether a tumor extends to perivesical fat (T3) and to document nodal spread. Distant metastases are assessed by CT of the chest and abdomen, MRI, or radionuclide imaging of the skeleton.

* Grading of transitional cell carcinoma: Low grade TCC: - The tumor cells are less pleomorphic, slightly similar to the cell of origin, few mitosis, so have better prognosis. 2. High grade TCC: - The cells highly pleomorphic, have more mitosis. - worse prognosis because it have aggressive behavior, more infiltrative

* TNM staging for bladder carcinoma: T: is tumor size. N: express lymph node affection by the tumor so: - N0 no affection to lymph nodes. - N+ the lymph nodes are infiltrated by the tumor M: express distant metastasis so: - M0 no distant metastasis. - M+ there is distant metastasis.

T: Tumor size. pT 0: carcinoma in situ. pT I: the tumor infiltrates the lamina propria. pT II: the tumor infiltrates the musculosa propria. pT3: the tumor infiltrates perivesical fat. pT4: distant spread.

* Complications of urinary bladder carcinoma: 1. Bleeding. 2. Obstruction: specially if the tumor grow near the urethral openings of the bladder lead to obstructive uropathy in the form of hydroureter, hydronephrosis 3. Stone formation: secondary to the obstruction and infection. 4. Fistual formation: fistula is an abnormal channel that connects the urinary bladder with another structure within the abdomen.

6. Spread of the malignant tumor either by : a 6. Spread of the malignant tumor either by : a. Direct spread to surrounding structures b. Hematogenous spread to distant organs. c. Lymphatic spread.

Treatment & Prognosis of Bladder carcinoma

I. Superficial non-muscle invasive TCC: Requires at least complete endoscopic resection +/- intravesical therapy using Bacillus Calmette-Guérin (BCG) vaccine which act through stimulation of the immune system in such a way that the immune system begins to target and destroy any remaining cancer cells. Of good prognosis. Superficial Disease Inc’d risk for extravesical recurrences

II. Muscle-Invasive TCC: Generally radical cystectomy & pelvic lymphadenectomy. Of bad prognosis. Removal of bladder & pelvic LNs. + Removal of prostate, seminal vesicles, & proximal urethra in males. Generally  impotence. + Removal of urethra, uterus, fallopian tubes, ovaries, anterior vaginal wall, & surrounding fascia in females. The probability of recurrence following surgery is predicted on the basis of pathologic stage, presence or absence of lymphatic or vascular invasion, and nodal spread.

Thanks