What is the most common sarcoma of the bladder?
leiomyosarcoma
rhabdosarcoma
carcinosarcoma
neurosarcoma
Correct Answer :
A. leiomyosarcoma
self-explanatory.
Related Questions
While deeply resecting a large bladder tumor, the surgeon noted loss of bladder distension, what should next step be?
increase the irrigation fluid and pursue the procedure
abort the procedure and leave a urethral catheter
perform cystogram and manage accordingly
perform abdominal exploration and manage accordingly
Risk factors for recurrence and progression of bladder cancers include the following:
multifocality
high tumor grade and advanced stage
presence of CIS
all of the above
What is false regarding the symptomatology of urethral cancers?
obstructive LUTS are common presentations and occur in association with carcinoma in situ
might present as perineal abscesses and fistulae
could be asymptomatic
venereal diseases increase the risk of urethral cancers
What is the likelihood that inverted papillomas of the upper urinary tract accompany tumors?
never
unlikely
likely
always
The most significant prognostic factors for survival in female urethral cancers are:
sensitivity to chemotherapy and age at presentation
anatomic location and extent of the tumor
histologic type of the tumor and sensitivity to radiotherapy
tumors stage and grade
What is the commonest type of tumors occurring in the penile urethra?
adenocarcinoma
transitional cell carcinoma
squamous cell carcinoma
basal cell carcinoma
What gene mutation is common in carcinoma-in-situ of urinary bladder?
RB
cyclin A
HRAS
CD-44
Bladder tumors with hydronephrosis are:
often of high-grade sarcomas
often associated with muscularis propria invasion
due to vesical polyps occluding ureteric orifices
should be resected but not diathermized
What is the commonest manifestation of upper tract urothelial carcinomas?
obstructive uropathy
painless hematuria
pain radiating to the groin
locally advanced tumor
What is the ideal vesical tumor patient for bladder preservation?
patients with carcinoma in situ
patients with completely resected solitary tumor
patients with preserved kidney and liver functions after 2 courses of BCG
patients with leiomyosarcoma
Immediately following transurethral resection of bladder tumors, intravesical installation of which material(s) is(are) contraindicated?
epirubicin
mitomycin c
BCG
none of the above
Bladder cancer patients who once failed BCG vaccine, should:
undergo cystectomy
try mitomycin c
take a second course of BCG
take a second course of BCG + quinolones
What is true regarding inverted papilloma of the bladder?
the standard treatment is transurethral resection
the prognosis for inverted papilloma is pathetic, with a recurrence rate of approximately 65%
the likelihood of synchronous urothelial carcinoma is 26%
has been shown to harbor p53 gene mutations
What percentage of bladder cancers is squamous cell type in origin?
2%
5%
70%
90%
What type of bladder cancers might be caused by Schistosoma haematobium infection?
transitional cell carcinoma
squamous cell carcinoma
adenocarcinoma
small cell carcinoma
Which of the following cystoscopic descriptions of bladder tumors is false?
nodular or sessile lesions usually invade muscle
papillary bladder tumors are typical of low stage and grade
carcinoma in situ appears as a flat, velvety patch
sarcomas commonly invade bladder base and ureteral orifices causing obstructions
In what percentages do upper tract urothelial tumors develop in patients with a bladder urothelial cancer?
2 - 4%
4 - 6%
6 - 8%
8 - 10%
What is the most effective adjuvant intravesical therapy for bladder tumors?
cisplatin
BCG
mitomycin C
5-fluorouracil
Partial cystectomy for bladder tumors can be performed when the following criterion(a) is(are) met:
the lesion is solitary and no associated CIS
physically, a surgical margin of 2-cm can be obtained
the resected area should be far enough from ureteral orifices and the bladder neck
all of the following
What is false concerning carcinoma-in-situ (CIS) of urinary tract?
frequently found in association with high-grade or extensive TCC
has a rate of progression to muscle invasion of 10-25%
significant areas of CIS are easily missed by routine cystoscopy
treatment begins with TURBT
While resecting a large bladder tumor located at the right lateral wall, the surgeon observes a bladder perforation, what should next step be?
continue the procedure as perforations at this site do no harm
abort the procedure and leave a urethral catheter
convert tumor removal to open method and repair the defect
perform abdominal exploration and manage accordingly
Intravesical installation of BCG should NOT be given soon after bladder tumor resection (TURBT) because:
there will be no target tumor tissue to work on
post-op. hematuria interacts unfavorably with BCG composition
of the risk of systemic absorption and sepsis
of the high risk of BCG reflux to kidneys while bladder irrigation
What might occur while resecting a bladder mass at the posterolateral wall?
bladder perforation
obturator nerve reflex
vesico-ureteral reflux
terrible bleeding
What is the commonest type of tumors occurring in the female urethra?
adenocarcinoma
transitional cell carcinoma
squamous cell carcinoma
comparable
The 5-yr survival rates of non-muscle-invasive bladder cancer are:
40 - 55%
55 - 70%
70 - 85%
85 - 100%
In women, what is the commonest type of cancers occurring in the proximal urethra?
adenocarcinoma
transitional cell carcinoma
squamous cell carcinoma
basal cell carcinoma
The treatment of nonmuscle-invasive bladder cancer begins with:
single intravesical chemotherapy
TURBT
intravesical BCG vaccine
multiple bladder biopsies
On diagnosing bladder cancers, what advantage does urine cytology has over tumor markers?
high specificity
high sensitivity
high reliability
strong validity
Which of the following statements concerning lymphatic drainage of the male urethra is true?
the anterior urethra drains into the inguinal and pelvic nodes
the posterior urethra drains into the pelvic nodes
the proximal two-thirds drain into the external and internal iliac nodes
the distal one-third drains into the obturator nodes
Regarding bladder neoplasia, squamous metaplasia differs from squamous dysplasia as the latter is/has:
well-differentiated tumor with broad-based invasive font
marked atypia distributed on wide areas of superficial urothelium
atypia is present
no atypia but marked degenerative epithelial changes