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Archive for the ‘T Scale’ Category

URO TODAY: Use of a scale (the T Scale) to rank the seriousness of prostate cancer and thus guide doctors on treatment options has been called into question by new US research. READ MORE>

Analysis of biopsy samples taken from the prostate is not always accurate in determining how far a tumour has spread, a research team says in a paper to the American Urological Association (AUA) annual meeting.

Those with a T2a score have cancer that is confined within the gland and on one side (lobe) only, making them candidates for nerve-sparing surgery and other focal therapy.

“This data suggests that selection of patients who truly have pT2a disease is extremely difficult and may impact [on]successful application of focal therapies,” the researchers say.

The T scale is applied to cancer confined to the prostate and surrounding areas:

Clinical
TX — Primary tumor cannot be assessed
T0 — No evidence of primary tumor
T1 — Cannot detect tumor with imaging tests
T1a — Less than 5 percent of the prostate is affected by the tumor
T1b — More than 5 percent of the prostate is affected by the tumor
T1c — Tumor identified by needle biopsy, PSA elevated
T2 — Tumor confined within prostate
T2a — Tumor affects one-half of one lobe or less
T2b — Tumor affects more than one-half of one lobe but not both lobes
T2c — Tumor affects both lobes
T3 — Tumor extends through the prostate capsule
T3a — Tumor extends beyond the prostate capsule
T3b — Tumor invades seminal vesicle(s)
T4 — Tumor is fixed or invades surrounding areas, such as the bladder neck, external sphincter, rectum, levator muscles, and/or pelvic wall

Pathologic
pT2 — Tumor confined to the prostate
pT2a — Tumor affects one-half of one lobe or less
pT2b — Tumor affects more than one-half of one lobe but not both lobes
pT2c — Tumor affects both lobes
pT3 — Tumor extends beyond the prostate
pT3a — Tumor extends beyond the prostate
pT3b — Tumor invades seminal vesicle(s)
pT4 — Tumor invades the bladder, rectum

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