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B. Helpap · SciRah

Researcher profile · Semantic Scholar

B. Helpap

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B. Helpap — researcher profile on SciRah

h-index: 25
Works: 265
Citations: 2,200

Most-cited papers

The significance of modified Gleason grading of prostatic carcinoma in biopsy and radical prostatectomy specimens
B. Helpap, L. Egevad
2006Virchows Archiv167 citations
Semantic Scholar
Pharmacological characterization of metabotropic glutamate receptors in several types of brain cells in primary cultures.
L. Prézeau, J. Carrette, B. Helpap, K. Curry +2 more
1994Molecular Pharmacology96 citations
Semantic Scholar
Modified Gleason grading. An updated review.
B. Helpap, L. Egevad
2009Histology and Histopathology59 citations
Semantic Scholar
Morphology and therapeutic strategies for neuroendocrine tumors of the genitourinary tract
B. Helpap
2002Cancer59 citations Open access
Semantic Scholar
Workgroup 1: Origins of prostate cancer
R. Montironi, D. Bostwick, H. Bonkhoff, A. Cockett +3 more
199648 citations Open access
Semantic Scholar
Immunohistochemical localization of chromogranins A and B and secretogranin II in normal, hyperplastic and neoplastic prostate
K. W. Schmid, B. Helpap, M. Tötsch, R. Kirchmair +3 more
1994Histopathology47 citations
Semantic Scholar
Osteoclast-like giant cell tumour of the pancreas presenting as a pseudocyst-like lesion
U. Oehler, Matthias Jürs, G. Klöppel, B. Helpap
1997Virchows Archiv45 citations
Semantic Scholar
Comparative immunocytochemical assessment of isolated carcinoma cells in lymph nodes and bone marrow of patients with clinically localized prostate cancer
J. Köllermann, Bernarda Heseding, B. Helpap, M. Köllermann +1 more
1999International Journal of Cancer39 citations Open access
Semantic Scholar
Cell kinetic studies on prostatic intraepithelial neoplasia (PIN) and atypical adenomatous hyperplasia (AAH) of the prostate.
B. Helpap
1995Pathology, Research and Practice39 citations
Semantic Scholar
Nondetected Tumor (pT0) after Prolonged, Neoadjuvant Treatment of Localized Prostatic Carcinoma
J. Köllermann, U. Feek, H. Müller, U. Kaulfuss +3 more
2000European Urology38 citations
Semantic Scholar
Low Frequency of Molecular Changes and Tumor Recurrence in Inverted Papillomas of the Urinary Tract
M. Eiber, J. V. van Oers, E. Zwarthoff, T. van der Kwast +10 more
2007American Journal of Surgical Pathology37 citations
Semantic Scholar
Molecular pathology of non-invasive urothelial carcinomas (part I)
B. Helpap, B. Schmitz-Dräger, P. Hamilton, G. Muzzonigro +5 more
2003Virchows Archiv36 citations
Semantic Scholar
Nonepithelial neoplasms of the urinary bladder
B. Helpap
2001Virchows Archiv33 citations
Semantic Scholar
Relationship between atypical adenomatous hyperplasia (AAH), prostatic intraepithelial neoplasia (PIN) and prostatic adenocarcinoma.
B. Helpap, H. Bonkhoff, A. Cockett, R. Montironi +3 more
1997Pathologica32 citations
Semantic Scholar
Nucleolar and AgNOR-analysis of prostatic intraepithelial neoplasia (PIN), atypical adenomatous hyperplasia (AAH) and prostatic carcinoma.
B. Helpap, C. Riede
1995Pathology, Research and Practice30 citations
Semantic Scholar
Neuroendocrine carcinomas of the prostate and urinary bladder: a diagnostic and therapeutic challenge
B. Helpap, G. Klöppel
2002Virchows Archiv29 citations
Semantic Scholar
Correlation of modified Gleason grading with pT stage of prostatic carcinoma after radical prostatectomy.
B. Helpap, L. Egevad
2008Analytical and quantitative cytology and histology26 citations
Semantic Scholar
Prognosis of stage pT0 after prolonged neoadjuvant endocrine therapy of prostate cancer: a matched-pair analysis.
J. Köllermann, W. Hopfenmüller, J. Caprano, Anke Budde +3 more
2004European Urology26 citations
Semantic Scholar
Limiting the diagnosis of atypical small glandular proliferations in needle biopsies of the prostate by the use of immunohistochemistry
B. Helpap, J. Köllermann, U. Oehler
2001Journal of Pathology26 citations
Semantic Scholar
The Significance of Accurate Determination of Gleason Score for Therapeutic Options and Prognosis of Prostate Cancer
B. Helpap, Daniel Ringli, Jens Tonhauser, Immanuel Poser +3 more
2016Pathology and Oncology Research24 citations
Semantic Scholar
Correlation of modified Gleason grading of prostate carcinoma with age, serum prostate specific antigen and tumor extent in needle biopsy specimens.
B. Helpap, L. Egevad
2008Analytical and quantitative cytology and histology22 citations
Semantic Scholar
Combined histoarchitectural and cytological biopsy grading improves grading accuracy in low‐grade prostate cancer
B. Helpap, J. Köllermann
2012International journal of urology20 citations
Semantic Scholar
Follow-up of nondetectable prostate carcinoma (pT0) after prolonged PSA-monitored neoadjuvant hormonal therapy followed by radical prostatectomy.
J. Köllermann, J. Caprano, Anke Budde, H. Weidenfeld +3 more
2003Urology19 citations
Semantic Scholar
Origins of prostate cancer.
R. Montironi, D. Bostwick, H. Bonkhoff, A. Cockett +3 more
1996Cancer17 citations
Semantic Scholar
Improving the Reproducibility of the Gleason Scores in Small Foci of Prostate Cancer - Suggestion of Diagnostic Criteria for Glandular Fusion
B. Helpap, G. Kristiansen, M. Beer, J. Köllermann +3 more
2012Pathology and Oncology Research16 citations
Semantic Scholar
Neuroendocrine Differentiation and Short–Term Neoadjuvant Hormonal Treatment of Prostatic Carcinoma with Special Regard to Tumor Regression
J. Köllermann, B. Helpap
2001European Urology16 citations
Semantic Scholar
The significance of the P504S expression pattern of high-grade prostatic intraepithelial neoplasia (HGPIN) with and without adenocarcinoma of the prostate in biopsy and radical prostatectomy specimens
B. Helpap
2006Virchows Archiv15 citations
Semantic Scholar
Methylation-specific PCR for DNA-based detection of occult tumor cells in lymph nodes of prostate cancer patients.
J. Köllermann, M. Müller, C. Goessl, H. Krause +3 more
2003European Urology15 citations
Semantic Scholar
The heterogeneous Gleason 7 carcinoma of the prostate: analyses of low and high grade (risk) carcinomas with criteria of the International Society of Urological Pathology (ISUP).
B. Helpap, Daniel Ringli, Zaki Shaikhibrahim, N. Wernert +1 more
2013Pathology, Research and Practice13 citations
Semantic Scholar
Methylation-Specific PCR for DNA-Based Detection of Occult Tumor Cells in Lymph Nodes of Prostate Cancer Patients
J. Köllermann, M. Müller, C. Goessl, H. Krause +3 more
200313 citations
Semantic Scholar
Working standards in prostatic intraepithelial neoplasia and atypical adenomatous hyperplasia.
F. Algaba, Jonathan I. Epstein, G. Fabus, B. Helpap +2 more
1995Pathology, Research and Practice13 citations
Semantic Scholar
Die Wertigkeit des 2005 modifizierten Gleason-Gradings in der urologischen Diagnostik von Prostatakarzinomen
B. Helpap, L. Egevad
2006Der Urologe12 citations
Semantic Scholar
Histological and immunohistochemical findings of prostatic carcinoma after external or interstitial radiotherapy
B. Helpap, Volker M Koch
2005Journal of Cancer Research and Clinical Oncology12 citations Open access
Semantic Scholar
Acute measles gastric infection.
M. Vieth, K. Dirschmid, U. Oehler, B. Helpap +2 more
2001American Journal of Surgical Pathology12 citations
Semantic Scholar
Effects of the selective metabotropic glutamate receptor agonist, L-CCG-I, on acquisition of a Morris task by rats.
F. van der Staay, H. Antonicek, B. Helpap, W. Freund
1995European Journal of Pharmacology11 citations
Semantic Scholar
The parenchymal reaction of the kidney after local freezing
H. Breining, B. Helpap, A. Minderjahn, S. Lymberopoulos
2004Urological research10 citations
Semantic Scholar
Nucleolar grading of renal cancer. Correlation of frequency and localization of nucleoli to histologic and cytologic grading and stage of renal cell carcinomas.
B. Helpap, J. Knüpffer, S. Essmann
1990Modern Pathology10 citations
Semantic Scholar
Nucleolar grading of breast cancer
B. Helpap
1989Virchows Archiv10 citations
Semantic Scholar
Impact of hormonal therapy on the detection of promoter hypermethylation of the detoxifying glutathione-S-transferase P1 gene (GSTP1) in prostate cancer
J. Köllermann, C. Kempkensteffen, B. Helpap, M. Schrader +4 more
2006BMC Urology9 citations Open access
Semantic Scholar
Significance of Gleason Grading of Low-Grade Carcinoma of the Prostate with Therapeutic Option of Active Surveillance
B. Helpap, G. Kristiansen, J. Köllermann, Zaki Shaikhibrahim +3 more
2012Urologia internationalis8 citations
Semantic Scholar
[The value of the modified Gleason grading system of prostate adenocarcinoma in routine urological diagnostics].
B. Helpap, L. Egevad
2007Der Urologe (Ausg. A)8 citations
Semantic Scholar
[New WHO classification of urothelial carcinoma of the urinary bladder].
B. Helpap
2002Verhandlungen der Deutschen Gesellschaft fur Pathologie8 citations
Semantic Scholar
[Prognostic factors of prostatic carcinoma].
B. Helpap
1998Der Pathologe8 citations
Semantic Scholar
Consensus statement on terminology: recommendation to use atypical adenomatous hyperplasia in place of adenosis of the prostate.
D. Bostwick, F. Algaba, Mitual B. Amin, A. Ayala +6 more
1994American Journal of Surgical Pathology8 citations
Semantic Scholar
Prostatic "dysplasia/atypical hyperplasia". Terminology, histopathology, pathobiology, and significance.
H. Kastendieck, B. Helpap
1989Urology8 citations
Semantic Scholar
The Value of Prognostic Grouping of Prostatic Carcinomas for Urologists and Pathologists
B. Helpap, Daniel Ringli, J. Breul, Jens Tonhauser +2 more
2015Urologia internationalis7 citations
Semantic Scholar
[Grading and staging of urinary bladder carcinomas (author's transl)].
B. Helpap, A. Giesbert
2008Deutsche Medizinische Wochenschrift7 citations
Semantic Scholar
Nonepithelial tumor-like lesions of the prostate: a never-ending diagnostic problem
B. Helpap
2002Virchows Archiv7 citations
Semantic Scholar
Lethal complications in a case of sigmoid diverticulitis. A case report.
U. Oehler, A. Bulatko, H. Jenss, B. Helpap
1997General & diagnostic pathology7 citations
Semantic Scholar
Development and cell kinetics of colonic tumors induced in mice by dimethylhydrazine
T. Hattori, B. Helpap, P. Gedigk
2004Journal of Cancer Research and Clinical Oncology6 citations Open access
Semantic Scholar

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D. Bostwick — researcher profile on SciRah

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A. Cockett — researcher profile on SciRah

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P. Troncoso — researcher profile on SciRah

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G. Kristiansen×3

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