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ISSN: 1233-9687
Polish Journal of Pathology
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1/2022
vol. 73
 
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abstract:
Original paper

Grade migration and important prognostic factors in a pathology specimen for radical radiotherapy in prostate cancer patients

Wojciech Majewski
1
,
Dariusz Lange
2
,
Agata Stanek-Widera
2
,
Bartosz Itrych
3
,
Tomasz Krzysztofiak
4
,
Michał Jarząb
5
,
Małgorzata Oczko-Wojciechowska
6
,
Maciej Kajor
7
,
Rafał Tarnawski
8

  1. Radiotherapy Department, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice, Poland
  2. University of Technology, Faculty of Medicine, Katowice, Poland
  3. Department of Breast Cancer, Centre of Postgraduate Medical Education, Warsaw, Poland
  4. Department of Brachytherapy, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice, Poland
  5. Breast Unit, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice, Poland
  6. Department of Genetic and Molecular Diagnostics of Cancer, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice, Poland
  7. Department of Pathology, Medical University of Silesia, Katowice, Poland
  8. Third Clinic of Radiotherapy and Chemotherapy, Maria Skłodowska-Curie National Research Institute of Oncology, Gliwice, Poland
Pol J Pathol 2022; 74 (1): 27-33
DOI: https://doi.org/10.5114/pjp.2022.117174
Online publish date: 2022/06/29
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The study aimed to evaluate grade migration and prognosis depending on pathologic features in patients with prostate cancer treated with radical external beam radiotherapy. The study included 139 patients with an initial Gleason score of 7 (3+4 or 4+3) i.e., Grade Group 2-3 (GG2-GG3) treated between 2008 and 2013. The clinical outcome was assessed with respect to biochemical control (BC) and biochemical disease-free survival (bDFS). After re-evaluation, the majority of patients (96 patients – 69%) were up-graded from GG2-3. Finally, there were 4 patients (3%) with grade GG1, 12 patients (9%) – GG2, 27 patients (19%) – GG3, 51 patients (37%) – GG4 and 45 patients (32%) – GG5. In 42 patients (30%) a cribriform pattern was observed.

Among the analyzed factors only the GGs were important for BC (p = 0.011) and the cribriform pattern was of borderline significance (p = 0.06). The 5-year biochemical control was 100% in GG1-3 and 84% in GG4-5. The 5-year biochemical control was 81% and 93%, if cribriform or no cribriform pattern was detected, respectively.

In conclusion, re-evaluation and verification of pathology specimens in accordance with contemporary rules upgraded the Gleason score in the majority of patients. The aggressive behavior of prostate cancer starts to occur from GG 4. Cribriform pattern almost tripled the biochemical failure rate.
keywords:

prostate cancer, radiotherapy, grade migration, cribriform
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