GU Flashcards
Bladder cancer: indications for adjuvant radiaiton
pT3-4, positive nodes, positive margins, high grade
45-50.4Gy
Prostate: EBRT target coverage
98/100
min 95%
max 107%
Gleason grade group 4
4+4=8
Testis stage IIC
N3, S0-1
Bladder cancer: dose and fields
39.6Gy/22fxs to pelvis, 54Gy/30fxs to bladder, 64.8Gy/36fxs to tumor
Superior border: mid-SI, L4/5 if T4 or N+
inf: bottom of obturator foramen
lateral: 2 cm on pelvic brim
ant: 2.5 cm ant to bladder boundary
post: 2.5 cm beyond bladder/mass
block femoral heads, bowel, rectum
Bladder boost: 2.5 cm PTV around bladder
Tumor boost: use pre-CT, cysto mapping to delineate
Penile brachytherapy criteria
T1-2N0, size < 4cm, any grade
Stage II seminoma treatment paradigm(s)
orchiectomy with high inguinal ligation then:
Stage IIA: RT preferred
Stage IIB: EPx4 cycles (per NCCN), RT also an option
Stage IIC: BEP chemo, no RT
Testis pT2
limited to testis with LVSI
epididymis
tunica albuginea
Testis stage IIB
N2, S0-1
Prostate stage IVA/B
IVA: N1
IVB: M1
Prostate stage IIIB
T3-4N0
Bladder stage IIIA
T3a-T4a
N1
Urethral ca: workup
cystoscopy (with EUA and TUR), image pelvis and upper urinary tract, biopsy any suspicious nodes (could be infection)
Penis T4
adjacent structures
Testis stage IIA
N1, S0-1
Bladder T1
lamina propria
Testis stage IIIC
S3 or M1b
Prostate LDR brachy: dosimetry
Modified peripheral loading. Plan to 180 Gy for I-125
Seattle:
D90>90% (goal is 130%)
V100>98%
V150<40%
V200<20%
urethral Dmax <110-120
rectal D1cc <100%
calculation grid < 2mm x 2mm x axial slice width
Prostate: active surveillance criteria and management
Offer to very low and low risk patients. May offer to favorable intermediate risk if older (age >75).
PSA q6 mos
DRE q12 mos
Biopsy within 12 months with anterior directed cores, then serial biopsy every 2 years
If rising PSA and biopsy negative: Do MRI on suspicion of anteior lesion then biopsy
Progression=new Gleason score 7 or greater or significant increase in disease volume
at 10yrs, 65% remain on active surveillance
Testis pN1
5 fewer nodes, all <2cm
Testis stage IIIA
M1a, S0-1
Gleason grade group 2
3+4=7
Bladder N1
single node in true pelvis
Prostate stage I
low risk group