Bladder CA Flashcards
(21 cards)
Low-grade; high-risk of recurrence
○ Rarely progress to more lethal invasive type
Papillary Lesions
High-grade tumor
○ Precursor of the more lethal muscle-invasive disease
Carcinoma in situ (CIS)
solitary tumor, low grade,
size <1 cm, and no invasive component on
imaging.
Tumors
possessing all of the following are consid-
ered low risk:
Low-risk tumors can successfully
be treated by
laser ureteroscopic ablation
or surgical resection and reanastomosis
of the remaining ureter ends
NMIBC
75% of bladder cancer
involve
only the immediate epithelial layer of cells (carcinoma in situ [CIS] and
Ta) or that only penetrate into the connective tissue below the urothe-
lium (T1) but not into the muscular layer known as the muscularis
propria.
involve
only the immediate epithelial layer of cells
carcinoma in situ [CIS] and
Ta
only penetrate into the connective tissue below the urothe-
lium
T1
tumors
that invade into the muscularis propria, through the muscularis
propria to involve the surrounding serosa, or into immediately
adjacent pelvic organs such as the rectum, prostate, vagina, or cervix.
Muscle-invasive bladder cancer (MIBC)
immediately
adjacent pelvic organs such as the rectum, prostate, vagina, or cervix
T4
through the muscularis
propria to involve the surrounding serosa
T3
considered the mainstay of
surgical treatment.
removal of all visible tumors
by TURBT in the operating room
Treatment For patients with intermediate- or
high-risk tumors
weekly intravesical instillations for 6 con-
secutive weeks of the attenuated mycobacterium strain known as
Bacille Calmette-Guérin (BCG)
For patients with low-risk disease, meta-analyses
have demonstrated a 12% reduction in early relapses when a single
chemotherapy treatment of
mitomycin C, epirubicin, or gemcitabine
was instilled directly into the bladder (intravesical therapy) within
24 hours of the TURBT.
For patients who are not fit enough for
or who refuse cystectomy,
non-BCG alternative intravesical agents
(mitomycin C, gemcitabine, docetaxel, valrubicin)
Or
agents that inhibit the PD-1/
PD-L1 immune checkpoint pathway (pem-
brolizumab)
In patients with NMIBC that
recurs long after initial BCG treatment,
repeat course of BCG
For patients with recurrence after a second adequate
course of BCG or with relapsed NMIBC within 6 months of initial
BCG exposure,
surgical removal of the entire bladder by cystectomy
is recommended due to the high risk of progression to MIBC and
potentially metastatic disease.
In carefully selected patients
with no evidence of CIS or hydronephrosis,
bladder-sparing combined-modality ther-
apy with concurrent chemotherapy and
radiation can achieve cure in ~65% of
patients.
Various chemotherapy regimens
have been utilized in combination with
radiation including
cisplatin, carboplatin,
5-fluorouracil, mitomycin C, paclitaxel,
and gemcitabine.
In patients who achieve a complete response to combined-
modality therapy,
regular cystoscopic monitoring of the bladder is
required with salvage cystectomy offered to patients who develop
MIBC in follow-up.
For patients with high-risk urothelial carcinoma of the upper urinary tract
resection of the kidney and ureter (including the ureter
bladder cuff) by nephroureterectomy is preferred.
In patients with decreased renal function
Segmental ureter-
ectomy may be appropriate in patients with decreased renal function
in which nephron-sparing outcomes are critical to prevent the need
for dialysis.