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Article ; Online: What's new in WHO fifth edition - urinary tract.

Compérat, Eva / Amin, Mahul B / Berney, Dan M / Cree, Ian / Menon, Santosh / Moch, Holger / Netto, George J / Rao, Vishal / Raspollini, Maria Rosaria / Rubin, Mark A / Srigley, John R / Tan, Puay Hoon / Tickoo, Satish Kumar / Turajlic, Samra / Tsuzuki, Toyonori

Histopathology

2022 Volume 81, Issue 4, Page(s) 439–446

Abstract: The fifth edition of the WHO Blue Book on urological tumours, specifically in the bladder chapter, represents a refinement and update in the classification of bladder tumours building on the aggregate major changes made in previous editions. Progress in ... ...

Abstract	The fifth edition of the WHO Blue Book on urological tumours, specifically in the bladder chapter, represents a refinement and update in the classification of bladder tumours building on the aggregate major changes made in previous editions. Progress in the molecular underpinnings of urothelial tumours, particularly with promising stratifiers for more precision-based treatment approaches, have been made. Special attention has been paid to burning questions in bladder pathology, such as grading, heterogeneous lesions, inverted tumours and substaging. The concept of neuroendocrine tumours will be explained precisely.
MeSH term(s)	Humans ; Urinary Bladder Neoplasms/pathology ; Urinary Tract/pathology ; Urologic Neoplasms ; World Health Organization
Language	English
Publishing date	2022-08-16
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	131914-0
ISSN	1365-2559 ; 0309-0167
ISSN (online)	1365-2559
ISSN	0309-0167
DOI	10.1111/his.14764
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Article ; Online: Datasets for the reporting of neoplasia of the testis: recommendations from the International Collaboration on Cancer Reporting.

Berney, Dan M / Comperat, Eva / Feldman, Darren R / Hamilton, Robert J / Idrees, Muhammad T / Samaratunga, Hemamali / Tickoo, Satish K / Yilmaz, Asli / Srigley, John R

Histopathology

2018 Volume 74, Issue 1, Page(s) 171–183

Abstract: We here describe the development of an evidence-based cancer dataset by an International Collaboration on Cancer Reporting expert panel for the reporting of primary testicular neoplasia, and present the 'required' and 'recommended' elements to be ... ...

Abstract	We here describe the development of an evidence-based cancer dataset by an International Collaboration on Cancer Reporting expert panel for the reporting of primary testicular neoplasia, and present the 'required' and 'recommended' elements to be included in the pathology report, as well as a commentary. This dataset encompasses the updated 2016 World Health Organisation classification of urological tumours, the results of an International Society of Urological Pathology consultation, and also staging with our preferred method: the American Joint Committee on Cancer version 8. Implementation of this dataset will facilitate consistent and accurate data collection between different cohorts, facilitate research, and hopefully result in improved patient management.
MeSH term(s)	Datasets as Topic ; Humans ; Male ; Pathology, Clinical/standards ; Testicular Neoplasms
Language	English
Publishing date	2018-12-19
Publishing country	England
Document type	Journal Article ; Review
ZDB-ID	131914-0
ISSN	1365-2559 ; 0309-0167
ISSN (online)	1365-2559
ISSN	0309-0167
DOI	10.1111/his.13736
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Article ; Online: Tumor microenvironment defines the invasive phenotype of AIP-mutation-positive pituitary tumors.

Barry, Sayka / Carlsen, Eivind / Marques, Pedro / Stiles, Craig E / Gadaleta, Emanuela / Berney, Dan M / Roncaroli, Federico / Chelala, Claude / Solomou, Antonia / Herincs, Maria / Caimari, Francisca / Grossman, Ashley B / Crnogorac-Jurcevic, Tatjana / Haworth, Oliver / Gaston-Massuet, Carles / Korbonits, Márta

Oncogene

2019 Volume 38, Issue 27, Page(s) 5381–5395

Abstract: The molecular mechanisms leading to aryl hydrocarbon receptor interacting protein (AIP) mutation-induced aggressive, young-onset growth hormone-secreting pituitary tumors are not fully understood. In this study, we have identified that AIP-mutation- ... ...

Abstract	The molecular mechanisms leading to aryl hydrocarbon receptor interacting protein (AIP) mutation-induced aggressive, young-onset growth hormone-secreting pituitary tumors are not fully understood. In this study, we have identified that AIP-mutation-positive tumors are infiltrated by a large number of macrophages compared to sporadic tumors. Tissue from pituitary-specific Aip-knockout (Aip
MeSH term(s)	Animals ; Biomarkers, Tumor/metabolism ; Chemokine CCL5/metabolism ; Epithelial-Mesenchymal Transition ; Humans ; Intracellular Signaling Peptides and Proteins/genetics ; Mice ; Mice, Knockout ; Mutation ; Neoplasm Invasiveness ; Pituitary Neoplasms/genetics ; Receptors, CCR5/metabolism ; Tumor Microenvironment
Chemical Substances	Biomarkers, Tumor ; CCL5 protein, human ; CCR5 protein, human ; Chemokine CCL5 ; Intracellular Signaling Peptides and Proteins ; Receptors, CCR5 ; aryl hydrocarbon receptor-interacting protein
Language	English
Publishing date	2019-03-12
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	639046-8
ISSN	1476-5594 ; 0950-9232
ISSN (online)	1476-5594
ISSN	0950-9232
DOI	10.1038/s41388-019-0779-5
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Article ; Online: A practical application of analysing weighted kappa for panels of experts and EQA schemes in pathology.

Wright, Karen C / Harnden, Patricia / Moss, Sue / Berney, Dan M / Melia, Jane

Journal of clinical pathology

2011 Volume 64, Issue 3, Page(s) 257–260

Abstract: Background: Kappa statistics are frequently used to analyse observer agreement for panels of experts and External Quality Assurance (EQA) schemes and generally treat all disagreements as total disagreement. However, the differences between ordered ... ...

Abstract	Background: Kappa statistics are frequently used to analyse observer agreement for panels of experts and External Quality Assurance (EQA) schemes and generally treat all disagreements as total disagreement. However, the differences between ordered categories may not be of equal importance (eg, the difference between grades 1 vs 2 compared with 1 vs 3). Weighted kappa can be used to adjust for this when comparing a small number of readers, but this has not as yet been applied to the large number of readers typical of a national EQA scheme. Aim: To develop and validate a method for applying weighted kappa to a large number of readers within the context of a real dataset: the UK National Urological Pathology EQA Scheme for prostatic biopsies. Methods: Data on Gleason grade recorded by 19 expert readers were extracted from the fixed text responses of 20 cancer cases from four circulations of the EQA scheme. Composite kappa, currently used to compute an unweighted kappa for large numbers of readers, was compared with the mean kappa for all pairwise combinations of readers. Weighted kappa generalised for multiple readers was compared with the newly developed 'pairwise-weighted' kappa. Results: For unweighted analyses, the median increase from composite to pairwise kappa was 0.006 (range -0.005 to +0.052). The difference between the pairwise-weighted kappa and generalised weighted kappa for multiple readers never exceeded ±0.01. Conclusion: Pairwise-weighted kappa is a suitable and highly accurate approximation to weighted kappa for multiple readers.
MeSH term(s)	Biopsy/standards ; Data Interpretation, Statistical ; Humans ; Male ; Observer Variation ; Pathology, Clinical/standards ; Prostatic Neoplasms/pathology ; Quality Assurance, Health Care ; United Kingdom
Language	English
Publishing date	2011-03
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Validation Studies
ZDB-ID	80261-x
ISSN	1472-4146 ; 0021-9746
ISSN (online)	1472-4146
ISSN	0021-9746
DOI	10.1136/jcp.2010.086330
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Article ; Online: Measuring interobserver variation in a pathology EQA scheme using weighted κ for multiple readers.

Wright, Karen C / Melia, Jane / Moss, Sue / Berney, Dan M / Coleman, Derek / Harnden, Patricia

Journal of clinical pathology

2011 Volume 64, Issue 12, Page(s) 1128–1131

Abstract: Background: A Urological Pathology External Quality Assurance (EQA) Scheme in the UK has reported observer variation in the diagnosis and grading of adenocarcinoma in prostatic biopsies using basic κ statistics, which rate all disagreements equally.: ... ...

Abstract	Background: A Urological Pathology External Quality Assurance (EQA) Scheme in the UK has reported observer variation in the diagnosis and grading of adenocarcinoma in prostatic biopsies using basic κ statistics, which rate all disagreements equally. Aim: The aim of this study is to use customised weighting schemes to report κ statistics that reflect the closeness of interobserver agreement in the prostate EQA scheme. Methods: A total of 83, 114 and 116 pathologists took part, respectively, in three web-based circulations and were classified as either expert or other readers. For analyses of diagnosis, there were 10, 8 and 8 cases in the three circulations, respectively. For analyses of Gleason Sum Score, only invasive cases were included, leaving 5, 5 and 6 cases, respectively. Analyses were conducted using customised weighting schemes with 'pairwise-weighted' κ for multiple readers. Results: Analysis of diagnosis for all circulations and all readers gave a composite κ value of 0.86 and pairwise-weighted κ (κ(p-w)) value of 0.91, both regarded as 'almost perfect' agreement. This was due to the high proportion of responses that showed partial agreement. Analysis of Gleason Sum Score gave κ=0.38 and κ(p-w)=0.58 over all circulations and all readers, indicating that discrepancies occur at the boundary between adjacent grades and may not be as clinically significant as suggested by composite κ. Conclusion: Weighted κ show higher levels of agreement than previously reported as they have the advantage of applying weighting, which reflects the relative importance of different types of discordance in diagnosis or grading. Agreement on grading remained low.
MeSH term(s)	Adenocarcinoma/pathology ; Biopsy/standards ; Biopsy/statistics & numerical data ; Humans ; Male ; Neoplasm Grading/standards ; Neoplasm Grading/statistics & numerical data ; Observer Variation ; Pathology, Clinical/standards ; Prostate/pathology ; Prostatic Neoplasms/pathology ; Quality Assurance, Health Care
Language	English
Publishing date	2011-12
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	80261-x
ISSN	1472-4146 ; 0021-9746
ISSN (online)	1472-4146
ISSN	0021-9746
DOI	10.1136/jclinpath-2011-200229
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Article ; Online: Identification of areas of grading difficulties in prostate cancer and comparison with artificial intelligence assisted grading.

Egevad, Lars / Swanberg, Daniela / Delahunt, Brett / Ström, Peter / Kartasalo, Kimmo / Olsson, Henrik / Berney, Dan M / Bostwick, David G / Evans, Andrew J / Humphrey, Peter A / Iczkowski, Kenneth A / Kench, James G / Kristiansen, Glen / Leite, Katia R M / McKenney, Jesse K / Oxley, Jon / Pan, Chin-Chen / Samaratunga, Hemamali / Srigley, John R /

Takahashi, Hiroyuki / Tsuzuki, Toyonori / van der Kwast, Theo / Varma, Murali / Zhou, Ming / Clements, Mark / Eklund, Martin

Virchows Archiv : an international journal of pathology

2020 Volume 477, Issue 6, Page(s) 777–786

Abstract: The International Society of Urological Pathology (ISUP) hosts a reference image database supervised by experts with the purpose of establishing an international standard in prostate cancer grading. Here, we aimed to identify areas of grading ... ...

Abstract	The International Society of Urological Pathology (ISUP) hosts a reference image database supervised by experts with the purpose of establishing an international standard in prostate cancer grading. Here, we aimed to identify areas of grading difficulties and compare the results with those obtained from an artificial intelligence system trained in grading. In a series of 87 needle biopsies of cancers selected to include problematic cases, experts failed to reach a 2/3 consensus in 41.4% (36/87). Among consensus and non-consensus cases, the weighted kappa was 0.77 (range 0.68-0.84) and 0.50 (range 0.40-0.57), respectively. Among the non-consensus cases, four main causes of disagreement were identified: the distinction between Gleason score 3 + 3 with tangential cutting artifacts vs. Gleason score 3 + 4 with poorly formed or fused glands (13 cases), Gleason score 3 + 4 vs. 4 + 3 (7 cases), Gleason score 4 + 3 vs. 4 + 4 (8 cases) and the identification of a small component of Gleason pattern 5 (6 cases). The AI system obtained a weighted kappa value of 0.53 among the non-consensus cases, placing it as the observer with the sixth best reproducibility out of a total of 24. AI may serve as a decision support and decrease inter-observer variability by its ability to make consistent decisions. The grading of these cancer patterns that best predicts outcome and guides treatment warrants further clinical and genetic studies. Results of such investigations should be used to improve calibration of AI systems.
MeSH term(s)	Artificial Intelligence ; Databases, Factual ; Humans ; Image Interpretation, Computer-Assisted/methods ; Image Interpretation, Computer-Assisted/standards ; Male ; Neoplasm Grading/methods ; Neoplasm Grading/standards ; Observer Variation ; Prostatic Neoplasms/pathology
Language	English
Publishing date	2020-06-15
Publishing country	Germany
Document type	Comparative Study ; Journal Article
ZDB-ID	1184867-4
ISSN	1432-2307 ; 0945-6317
ISSN (online)	1432-2307
ISSN	0945-6317
DOI	10.1007/s00428-020-02858-w
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Article ; Online: Endonasal endoscopic transsphenoidal pituitary surgery: early experience and outcome in paediatric Cushing's disease.

Storr, Helen L / Drake, William M / Evanson, Jane / Matson, Matthew / Berney, Dan M / Grossman, Ashley B / Akker, Scott A / Monson, John P / Alusi, Ghassan / Savage, Martin O / Sabin, Ian

Clinical endocrinology

2014 Volume 80, Issue 2, Page(s) 270–276

Abstract: Background: Selective adenomectomy remains the first-line treatment for Cushing's disease (CD), until recently by microscopic transsphenoidal pituitary surgery. Endonasal transsphenoidal endoscopic surgery (ETES) is emerging as a novel, less invasive ... ...

Abstract	Background: Selective adenomectomy remains the first-line treatment for Cushing's disease (CD), until recently by microscopic transsphenoidal pituitary surgery. Endonasal transsphenoidal endoscopic surgery (ETES) is emerging as a novel, less invasive treatment for pituitary adenomas and has become the optimal surgical approach. Objective: There are no published series for the treatment of paediatric CD by ETES, and we report our centre's preliminary results. Design: Retrospective analysis. Patients: Six paediatric patients (median age 15·8 years; range 11·7-17·0 years) fulfilled standard diagnostic criteria for CD. Preoperatively, no abnormality was identified on pituitary MR scanning in 3 (50%) patients, one had a macroadenoma. Bilateral petrosal sinus sampling demonstrated central ACTH secretion (IPS/P ACTH ratio ≥3·0, post-CRH) in 3/6 (50%) patients. The same neurosurgeon and endoscopic nasal surgeon undertook all the operations. Outcome measures: Therapeutic outcome and rate of complications. Results: Clinical recovery and biochemical 'cure' were achieved in 5 (83%) patients, and a corticotroph adenoma was confirmed histologically in all cured cases. One case developed post-operative CSF leak requiring lumbar drain insertion and patching. At a mean interval of 4·7 years (0·1-10·8 years) post-operatively, cured patients have shown no recurrence. One patient, with a large diffuse adenoma requiring more extensive surgery, has panhypopituitarism, and another patient has GH and gonadotrophin deficiencies. Conclusions: Our experience shows that ETES for removing corticotroph adenomas in children, in most cases not visualized on MRI, is minimally invasive and gave excellent post-operative recovery/results. In skilled hands, this technique provides an alternative to conventional transsphenoidal microscopic surgery in managing paediatric CD.
MeSH term(s)	Adenoma/pathology ; Adenoma/surgery ; Adolescent ; Adrenocorticotropic Hormone/secretion ; Child ; Endocrine Surgical Procedures/methods ; Endoscopy/methods ; Female ; Humans ; Magnetic Resonance Imaging ; Male ; Nasal Cavity ; Pituitary ACTH Hypersecretion/metabolism ; Pituitary ACTH Hypersecretion/pathology ; Pituitary ACTH Hypersecretion/surgery ; Pituitary Gland/diagnostic imaging ; Pituitary Gland/pathology ; Pituitary Gland/surgery ; Radiography ; Reproducibility of Results ; Retrospective Studies ; Treatment Outcome
Chemical Substances	Adrenocorticotropic Hormone (9002-60-2)
Language	English
Publishing date	2014-02
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	121745-8
ISSN	1365-2265 ; 0300-0664
ISSN (online)	1365-2265
ISSN	0300-0664
DOI	10.1111/cen.12275
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Zs.A 814: Show issues

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Article ; Online: Oncogene-induced senescence in pituitary adenomas and carcinomas.

Alexandraki, Krystallenia I / Munayem Khan, Mohammed / Chahal, Harvinder S / Dalantaeva, Nadezhda S / Trivellin, Giampaolo / Berney, Dan M / Caron, Philippe / Popovic, Vera / Pfeifer, Marija / Jordan, Suzanne / Korbonits, Márta / Grossman, Ashley B

Hormones (Athens, Greece)

2012 Volume 11, Issue 3, Page(s) 297–307

Abstract: Objective: The model of "oncogene-induced senescence" (OIS), resulting in cell-proliferation arrest, has recently been suggested as a possible explanation for the non-progression of pituitary tumours to malignancy. The aim of the study was to compare ... ...

Abstract	Objective: The model of "oncogene-induced senescence" (OIS), resulting in cell-proliferation arrest, has recently been suggested as a possible explanation for the non-progression of pituitary tumours to malignancy. The aim of the study was to compare the expression of β-galactosidase as a molecular marker of OIS, and p21/p16 as additional markers involved in mediating OIS, in pituitary adenomas, carcinomas and normal pituitary tissue. Design: We performed: a) semi-quantitative immunohistochemistry (β-galactosidase, p16, p21) in 41 pituitary adenomas [(11 GH-secreting, 9 PRL-secreting, 10 ACTH-secreting, 11 non-functioning (NFPAs)], 6 carcinomas (3 multihormonal: PRL/ACTH/GH, PRL/ACTH, PRL/GH/FSH; 1 non-functioning; 2 ACTH-secreting) and 7 normal pituitary tissues; b) quantitative PCR of mRNA (p16 and p21) in 6 GH-secreting, 6 NFPAs and 6 normal pituitary tissues. Results: β-galactosidase was significantly increased in GH-secreting tumours (P=0.002), NFPAs (P=0.04), macroadenomas (P=0.03) and carcinomas (P=0.02), as compared to normal pituitary tissue. We found that p16 expression was significantly lower in all tumours (both adenomas and carcinomas) probably secondary to reduced transcription, at least for NFPAs; p21 showed a different biological behaviour, implying that p21 and p16 may play different roles in the senescence of each individual type of adenoma. Conclusions: β-galactosidase was significantly over-expressed in GH-secreting and NFPAs, and unexpectedly also in carcinomas. We speculate that the senescence pathway, which may explain the rarity of malignant progression to carcinomas in GH-secreting and NFPAs, might not be universal but cell-type specific.
MeSH term(s)	Adenoma/metabolism ; Adenoma/physiopathology ; Adrenocorticotropic Hormone/metabolism ; Aging ; Cyclin-Dependent Kinase Inhibitor p16/biosynthesis ; Cyclin-Dependent Kinase Inhibitor p21/biosynthesis ; Growth Hormone/metabolism ; Humans ; Immunohistochemistry ; Pituitary Gland/metabolism ; Pituitary Neoplasms/metabolism ; Pituitary Neoplasms/physiopathology ; Prolactinoma/metabolism ; beta-Galactosidase/biosynthesis
Chemical Substances	Cyclin-Dependent Kinase Inhibitor p16 ; Cyclin-Dependent Kinase Inhibitor p21 ; Adrenocorticotropic Hormone (9002-60-2) ; Growth Hormone (9002-72-6) ; beta-Galactosidase (EC 3.2.1.23)
Language	English
Publishing date	2012-07-18
Publishing country	Switzerland
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2075912-5
ISSN	2520-8721 ; 1109-3099
ISSN (online)	2520-8721
ISSN	1109-3099
DOI	10.14310/horm.2002.1358
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Article: The European Network of Uropathology: a novel mechanism for communication between pathologists.

Egevad, Lars / Algaba, Ferran / Berney, Dan M / Boccon-Gibod, Liliane / Griffiths, David F / Lopez-Beltran, Antonio / Mikuz, Gregor / Varma, Murali / Montironi, Rodolfo

Analytical and quantitative cytology and histology

2009 Volume 31, Issue 2, Page(s) 90–95

Abstract: In pathology there is a need to rapidly disseminate professional information to the appropriate target groups. This is a surprisingly difficult task on an international level. Therefore, the European Network of Uropathology (ENUP) was recently organized ... ...

Abstract	In pathology there is a need to rapidly disseminate professional information to the appropriate target groups. This is a surprisingly difficult task on an international level. Therefore, the European Network of Uropathology (ENUP) was recently organized by the Uropathology Working Group of the European Society of Pathology. The purposes were to establish a channel for distribution of information about uropathology, such as guidelines, consensus documents, meetings and courses; to organize research collaborations; and to set up mechanisms for survey studies. ENUP has recruited a total of 374 individual members from 338 pathology laboratories in 15 Western European countries. E-mail is used for all communication, and studies are carried out through interactive Web sites. Information e-mails are sent regularly, and 2 Web-based surveys on handling and reporting of urologic specimens have been conducted. Here we report on the methods used to organize this novel information network. We think that ENUP could serve as a model for other fields of pathology and other geographic regions.
MeSH term(s)	Congresses as Topic ; Consensus ; Cooperative Behavior ; Data Collection/methods ; Electronic Mail ; Europe ; Humans ; Information Dissemination ; International Cooperation ; Pathology, Surgical ; Personnel Selection ; Practice Guidelines as Topic ; Urology
Language	English
Publishing date	2009-04
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	632707-2
ISSN	0884-6812 ; 0190-0471
ISSN	0884-6812 ; 0190-0471
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Zs.A 1519: Show issues

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Article ; Online: Gleason grade 4 prostate adenocarcinoma patterns: an interobserver agreement study among genitourinary pathologists.

Kweldam, Charlotte F / Nieboer, Daan / Algaba, Ferran / Amin, Mahul B / Berney, Dan M / Billis, Athanase / Bostwick, David G / Bubendorf, Lukas / Cheng, Liang / Compérat, Eva / Delahunt, Brett / Egevad, Lars / Evans, Andrew J / Hansel, Donna E / Humphrey, Peter A / Kristiansen, Glen / van der Kwast, Theodorus H / Magi-Galluzzi, Cristina / Montironi, Rodolfo /

Netto, George J / Samaratunga, Hemamali / Srigley, John R / Tan, Puay H / Varma, Murali / Zhou, Ming / van Leenders, Geert J L H

Histopathology

2016 Volume 69, Issue 3, Page(s) 441–449

Abstract: Aims: To assess the interobserver reproducibility of individual Gleason grade 4 growth patterns.: Methods and results: Twenty-three genitourinary pathologists participated in the evaluation of 60 selected high-magnification photographs. The selection ...

Abstract	Aims: To assess the interobserver reproducibility of individual Gleason grade 4 growth patterns. Methods and results: Twenty-three genitourinary pathologists participated in the evaluation of 60 selected high-magnification photographs. The selection included 10 cases of Gleason grade 3, 40 of Gleason grade 4 (10 per growth pattern), and 10 of Gleason grade 5. Participants were asked to select a single predominant Gleason grade per case (3, 4, or 5), and to indicate the predominant Gleason grade 4 growth pattern, if present. 'Consensus' was defined as at least 80% agreement, and 'favoured' as 60-80% agreement. Consensus on Gleason grading was reached in 47 of 60 (78%) cases, 35 of which were assigned to grade 4. In the 13 non-consensus cases, ill-formed (6/13, 46%) and fused (7/13, 54%) patterns were involved in the disagreement. Among the 20 cases where at least one pathologist assigned the ill-formed growth pattern, none (0%, 0/20) reached consensus. Consensus for fused, cribriform and glomeruloid glands was reached in 2%, 23% and 38% of cases, respectively. In nine of 35 (26%) consensus Gleason grade 4 cases, participants disagreed on the growth pattern. Six of these were characterized by large epithelial proliferations with delicate intervening fibrovascular cores, which were alternatively given the designation fused or cribriform growth pattern ('complex fused'). Conclusions: Consensus on Gleason grade 4 growth pattern was predominantly reached on cribriform and glomeruloid patterns, but rarely on ill-formed and fused glands. The complex fused glands seem to constitute a borderline pattern of unknown prognostic significance on which a consensus could not be reached.
MeSH term(s)	Adenocarcinoma/pathology ; Humans ; Male ; Neoplasm Grading ; Observer Variation ; Pathologists ; Pathology, Clinical ; Prostatic Neoplasms/pathology
Language	English
Publishing date	2016-09
Publishing country	England
Document type	Journal Article
ZDB-ID	131914-0
ISSN	1365-2559 ; 0309-0167
ISSN (online)	1365-2559
ISSN	0309-0167
DOI	10.1111/his.12976
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