Difference between revisions of "Prostate chips grossing"
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This article deals with '''prostate chips grossing'''. ''TURP specimens'' | This article deals with '''prostate chips grossing'''. ''TURP specimens'' and ''TURP grossing'' redirect here. | ||
==Introduction== | ==Introduction== | ||
Prostate chips are generated from ''transurethral resection of the prostate'' (TURP) procedures. These are generally for relieving urinary obstruction due to [[nodular hyperplasia of the prostate]] (benign prostatic hyperplasia); however, urinary obstruction may be secondary to [[prostate cancer]]. Thus, the job of the pathologist here, usually, is excluding an incidental [[cancer]]. | Prostate chips are generated from ''transurethral resection of the prostate'' (TURP) procedures. These are generally for relieving urinary obstruction due to [[nodular hyperplasia of the prostate]] (benign prostatic hyperplasia); however, urinary obstruction may be secondary to [[prostate cancer]]. Thus, the job of the pathologist here, usually, is excluding an incidental [[cancer]]. | ||
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====Sampling==== | |||
Number of cassettes:<ref name=Ref_Lester398>{{Ref Lester|398}}</ref> | Number of cassettes:<ref name=Ref_Lester398>{{Ref Lester|398}}</ref> | ||
*<= 12 grams: [[EIT]]. | *<= 12 grams: [[EIT]]. | ||
| Line 44: | Line 45: | ||
***21 grams: 6-8 cassettes for 12 grams + 2 cassettes = 7-9 cassettes. | ***21 grams: 6-8 cassettes for 12 grams + 2 cassettes = 7-9 cassettes. | ||
====Formula==== | Note: | ||
*If a minimal cancer is found in a partially submitted specimen, it is reasonable to stop there as submitting more tissue or the remainder is unlikely to change the [[prostate cancer grading|grade]] or extent of involvement.<ref name=pmid18684032>{{Cite journal | last1 = Trpkov | first1 = K. | last2 = Thompson | first2 = J. | last3 = Kulaga | first3 = A. | last4 = Yilmaz | first4 = A. | title = How much tissue sampling is required when unsuspected minimal prostate carcinoma is identified on transurethral resection? | journal = Arch Pathol Lab Med | volume = 132 | issue = 8 | pages = 1313-6 | month = Aug | year = 2008 | doi = 10.1043/1543-2165(2008)132[1313:HMTSIR]2.0.CO;2 | PMID = 18684032 }}</ref> | |||
=====Formula===== | |||
<math> | <math> | ||
N = (m -12)/5 + 8 | N = (m -12)/5 + 8 | ||
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<br>Where: | <br>Where: | ||
<br>N = number of blocks. | <br>N = number of blocks. | ||
<br>m = mass of the prostate tissue. | <br>m = mass of the prostate tissue in grams. | ||
===Alternate approaches=== | ===Alternate approaches=== | ||
Latest revision as of 21:20, 2 March 2022
This article deals with prostate chips grossing. TURP specimens and TURP grossing redirect here.
Introduction
Prostate chips are generated from transurethral resection of the prostate (TURP) procedures. These are generally for relieving urinary obstruction due to nodular hyperplasia of the prostate (benign prostatic hyperplasia); however, urinary obstruction may be secondary to prostate cancer. Thus, the job of the pathologist here, usually, is excluding an incidental cancer.
The prevalence of prostate cancer varies from 7% (in a series 823 TURPs[1]) to 17% (in an older series of 747 TURPs[2]).
Clinically relevant cancer in procedures done for BPH (TURPs and prostatectomies) is seen in approximately 1.5% of specimens.[1]
Protocol
Specimen:
- Weight ___ grams.
- Dimensions (in aggregate): ___ x ___ x ___ cm.
- Number of fragments: [1-6 / multiple (>6)].
- Appearance: [tan-gray / yellow / orange].
- Consistency: [rubbery / firm].
- Other: [none / hemorrhagic appearance / necrotic appearing].
[Submitted in total/Representative sections submitted] in block(s) ___.
Protocol notes
What to look for/feel for:[3]
| Entity | Colour | Firmness |
|---|---|---|
| Prostate cancer | yellow/orange | firm |
| Benign prostate | tan/gray | rubbery |
Sampling
Number of cassettes:[3]
- <= 12 grams: EIT.
- >12 grams: embed 12 grams and 1 cassette for every additional 5 grams.
- If the prostate chips have a mass of:
- 16 grams: 6-8 cassettes for 12 grams + 1 cassette = 7-9 cassettes.
- 21 grams: 6-8 cassettes for 12 grams + 2 cassettes = 7-9 cassettes.
- If the prostate chips have a mass of:
Note:
- If a minimal cancer is found in a partially submitted specimen, it is reasonable to stop there as submitting more tissue or the remainder is unlikely to change the grade or extent of involvement.[2]
Formula
Where:
N = number of blocks.
m = mass of the prostate tissue in grams.
Alternate approaches
See also
Related protocols
References
- ↑ 1.0 1.1 Skrzypczyk, MA.; Dobruch, J.; Nyk, L.; Szostek, P.; Szempliński, S.; Borówka, A. (2014). "Should all specimens taken during surgical treatment of patients with benign prostatic hyperplasia be assessed by a pathologist?". Cent European J Urol 67 (3): 227-32. doi:10.5173/ceju.2014.03.art2. PMID 25247076.
- ↑ 2.0 2.1 Trpkov, K.; Thompson, J.; Kulaga, A.; Yilmaz, A. (Aug 2008). "How much tissue sampling is required when unsuspected minimal prostate carcinoma is identified on transurethral resection?". Arch Pathol Lab Med 132 (8): 1313-6. doi:10.1043/1543-2165(2008)132[1313:HMTSIR]2.0.CO;2. PMID 18684032.
- ↑ 3.0 3.1 Lester, Susan Carole (2005). Manual of Surgical Pathology (2nd ed.). Saunders. pp. 398. ISBN 978-0443066450.