Abstract:
INTRODUCTION:Gleason grading is the most common method of prostate cancer classification. AIM:The aim of the authors was to assess the reproducibility of Gleason grading among pathologists using the same needle biopsy samples. METHOD:23 pathologists examined 37 prostate cancer biopsies stained with hematoxylin and eosin. Gleason scores were categorised into 4 groups (2-4, 5-6, 7 and 8-10). Kappa statistics were used to reflect interobserver agreement. RESULTS:Considering all participating pathologists, grouping into one of the 4 categories resulted in an overall kappa value of 0.49. For the individual categories, the worst agreement (kappa = 0.15) was seen with well differentiated carcinomas, and the best (kappa = 0.65) with poorly differentiated ones. CONCLUSIONS:These results suggest that Gleason grading in biopsy samples is moderately reproducible. The kappa values vary according to the differentiation of the cancer, and there is not much difference between the results of the present study and those published in the literature. To increase reproducibility, trainings should be organised, and this could improve the quality of grading. :Bevezetés: A Gleason-gradingrendszer jelenleg a legáltalánosabban elterjedt és ajánlott osztályozás prosztatakarcinóma esetében. Célkitűzés: A szerzők célja a Gleason-osztályozás reprodukálhatóságának felmérése, a patológusok közötti egyetértés vizsgálata volt prosztata-tűbiopszás mintákon. Módszer: 23 patológus vizsgált meg 37 prosztatakarcinómát tartalmazó biopsziás mintát hematoxilin-eozinnal festett metszetekben. A Gleason-pontszámokat (score) négy kategóriába sorolták (2–4, 5–6, 7 és 8–10). A vizsgálók közti egyetértés meghatározására kappa-statisztikát használtak. Eredmények: Az összes vizsgálóra vonatkoztatva, a Gleason-pontszámok alapján kialakított kategóriákba történő besorolás reprodukálhatóságát jellemző kappa-érték 0,49 volt. Az egyes kategóriákra és az összes vizsgálóra vonatkoztatva a legkisebb egyetértést (kappa = 0,15) a jól differenciált karcinómáknál, a legnagyobbat (kappa = 0,65) pedig a rosszul differenciált rákoknál találták. Következtetések: Az eredmények alapján a Gleason-pontszám (score) meghatározása a részt vevő magyar patológusok között mérsékelten reprodukálhatónak bizonyult. A különböző kappa-értékek a daganatok differenciáltságának megfelelően változtak, az irodalmi adatoktól lényegében nem tértek el. A reprodukálhatóság növelése érdekében célzott továbbképzés bevezetése mérlegelendő, ami a leletezés minőségének javulását eredményezhetné. Orv. Hetil., 2013, 154, 1219–1225.
journal_name
Orv Hetiljournal_title
Orvosi hetilapauthors
Bori R,Salamon F,Móczár C,Cserni Gdoi
10.1556/OH.2013.29659subject
Has Abstractpub_date
2013-08-04 00:00:00pages
1219-25issue
31eissn
0030-6002issn
1788-6120pii
4859058328M4631Hjournal_volume
154pub_type
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