Browsing by Author "Erbarut Seven, İpek"
Now showing items 1-13 of 13
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Calculation of the Ki67 index in pancreatic neuroendocrine tumors: A comparative analysis of four counting methodologies
Reid, Michelle Dian; Bağcı, Pelin; Ohike, Nobuyuki; Saka, Burcu; Erbarut Seven, İpek; Dursun, Nevra; Balcı, Serdar; Gucer, Hasan; Jang, Kee-Taek; Tajiri, Takuma; Baştürk, Olca; Kong, So Yeon; Goodman, Michael; Akkaş, Gizem; Adsay, Volkan (Nature Publishing Group, 2015)Ki67 index is now an essential part of classification of pancreatic neuroendocrine tumors. However, its adaptation into daily practice has been fraught with challenges related to counting methodology. In this study, three ... -
The contribution of additional sampling in cholecystectomy materials: A multicenter prospective study
Abdullazade, Samir; Akarca, Fahire Göknur; Esendağlı, Güldal; Turhan, Nesrin; Erden, Esra; Savaş, Berna; Markoç, Fatma; Tuncel, Deniz; Özgüven Yılmaz, Banu; Saka, Burcu; Hallaç Keser, Sevinç; Şengiz Erhan, Selma; Gücin, Zühal; Sağol, Özgül; Ağalar, Anıl Aysal; Çelik, Sevinç; Özer, Hatice; Erbarut Seven, İpek; Ataizi Çelikel, Çiğdem; Ekinci, Özgür; Eğilmez, Hatice Reyhan; Balcı, Serdar; Akyol, Gülen (Federation of Turkish Pathology Societies, 2020)Objective: Cholecystectomy materials arc frequently encountered in routine practice. The aim of this study was to determine the true frequency of gallbladder lesions, the diagnostic consistency, and standardization of ... -
Epithelial inclusions in the gallbladder: cytoisospora belli organisms or degenerative intracytoplasmic pas-positive hyaline globules
Pehlivanoğlu, Burçin; Erbarut Seven, İpek; Memiş, Bahar; Saka, Burcu; Bağcı, Pelin; Balcı, Serdar; Cheng, Jeanette; Baştürk, Olca; Reid, Michelle; Adsay, N. Volkan (Nature Publishing Group, 2020)Background: Lai et al. reported 18 cases of Cystoisospora belli in the gallbladders (GBs), detected incidentally in 0.5% ofimmunocompetent patients (PMID: 27158759). However, a recent molecular study failed to confirm this ... -
Epithelial inclusions in the gallbladder: cytoisospora belli organisms or degenerative intracytoplasmic pas-positive hyaline globules
Pehlivanoğlu, Burçin; Erbarut Seven, İpek; Memiş, Bahar; Saka, Burcu; Bağcı, Pelin; Balcı, Serdar; Cheng, Jeanette; Baştürk, Olca; Reid, Michelle; Adsay, N. Volkan (Nature Publishing Group, 2020)Background: Lai et al. reported 18 cases of Cystoisospora belli in the gallbladders (GBs), detected incidentally in 0.5% ofimmunocompetent patients (PMID: 27158759). However, a recent molecular study failed to confirm this ... -
Follicular cholecystitis: Reappraisal of incidence, definition, and clinicopathologic associations in an analysis of 2550 cholecystectomies
Saka, Burcu; Memiş, Bahar; Erbarut Seven, İpek; Pehlivanoğlu, Burçin; Balcı, Serdar; Bağcı, Pelin; Reid, Michelle; Dursun, Nevra; Tapia Escalano, Oscar; Carlos Roa, Juan; Carlos Araya, Juan; Kong, So Yeon; Baştürk, Olca; Koshiol, Jill; Adsay, N. Volkan (SAGE Publications Inc, 2020)Context.Follicular cholecystitis (FC) is a poorly characterized entity.Objective.To determine its frequency/clinicopathologic associations.Design.A total of 2550 cholecystectomy specimens were examined. Two hundred three ... -
Is it justifiable to move the grade-1 ki67 index cut-off from 3% to 5% for pancreatic neuroendocrine tumors as has been proposed? The cases that fall to 3-5% category have clinicopathologic characteristics closer to those > 5%
Reid, Michelle; Balcı, Serdar; Bağcı, Pelin; Saka, Burcu; Pehlivanoğlu, Burçin; Erbarut Seven, İpek; Baştürk, Olca; Adsay, N. Volkan (Nature Publishing Group, 2020)Background: Grading of linear parameters into meaningful (clinically relevant) clusters is a well-known challenge. Recently several groupshave proposed to change the Ki67 index cut-off for grade 1 (G1) category for PanNETs ... -
Is it justifiable to move the grade-1 ki67 index cut-off from 3% to 5% for pancreatic neuroendocrine tumors as has been proposed? The cases that fall to 3-5% category have clinicopathologic characteristics closer to those > 5%
Reid, Michelle; Balcı, Serdar; Bağcı, Pelin; Saka, Burcu; Pehlivanoğlu, Burçin; Erbarut Seven, İpek; Baştürk, Olca; Adsay, N. Volkan (Nature Publishing Group, 2020)Background: Grading of linear parameters into meaningful (clinically relevant) clusters is a well-known challenge. Recently several groupshave proposed to change the Ki67 index cut-off for grade 1 (G1) category for PanNETs ... -
Non-neoplastic polyps of the gallbladder: A clinicopathologic analysis of 447 cases
Taşkın, Orhun; Bellolio, Enrique; Dursun, Nevra; Erbarut Seven, İpek; Roa, Juan C.; Araya, Juan C.; Villaseca, Miguel; Tapia, Oscar; Vance, Courtney; Saka, Burcu; Balcı, Serdar; Bağcı, Pelin; Losada, Hector; Sarmiento, Juan; Memis, Bahar; Pehlivanoğlu, Burçin; Baştürk, Olca; Reid, Michelle D.; Koshiol, Jill; Cheng, Jeanette; Kapran, Yersu; Adsay, Volkan (2020)There is no systematic histopathologic analysis of non-neoplastic polyps in the gallbladder. In this study, in addition to a computer search for cases designated as "polyp," a systematic review of 2533 consecutive routinely ... -
A proposal for improved t-staging of pancreatic ductal adenocarcinoma by using microscopic examination as the basis for determining the size and t-stage
Baştürk, Olca; Reid, Michelle; Balcı, Serdar; Erbarut Seven, İpek; Saka, Burcu; Pehlivanoğlu, Burçin; Memis, Bahar; Bağcı, Pelin; Adsay, Nazmi Volkan (Nature Publishing Group, 2020)Background: Stage remains as the most helpful prognosticator in pancreatic ductal adenocarcinoma (PDAC). However, accurate grossmeasurement of PDAC tumor size, the main stage parameter, is a well-known challenge due to its ... -
A proposal for improved t-staging of pancreatic ductal adenocarcinoma by using microscopic examination as the basis for determining the size and t-stage
Baştürk, Olca; Reid, Michelle; Balcı, Serdar; Erbarut Seven, İpek; Saka, Burcu; Pehlivanoğlu, Burçin; Memis, Bahar; Bağcı, Pelin; Adsay, Nazmi Volkan (Nature Publishing Group, 2020)Background: Stage remains as the most helpful prognosticator in pancreatic ductal adenocarcinoma (PDAC). However, accurate grossmeasurement of PDAC tumor size, the main stage parameter, is a well-known challenge due to its ... -
A retrospective evaluation of the epithelial changes/lesions and neoplasms of the Gallbladder in Turkey and a review of the existing sampling methods: A multicentre study
Esendağlı, Güldal; Akarca, Fahire Göknur; Balcı, Serdar; Argon, Asuman; Şengiz Erhan, Selma; Turhan, Nesrin; İnce Zengin, Neslihan; Hallaç Keser, Sevinç; Çelik, Betül; Bulut, Tangül; Abdullazade, Samir; Erden, Esra; Savaş, Berna; Bostan, Temmuz; Sağol, Özgül; Aysal Ağalar, Anıl; Kepil, Nuray; Karslıoğlu, Yıldırım; Günal, Armağan; Markoç, Fatma; Saka, Burcu; Özgün, Gonca; Özdamar, Şükrü Oğuz; Bahadır, Burak; Kaymaz, Esin; Işık, Emre; Ayhan, Semin; Tuncel, Deniz; Özgüven Yılmaz, Banu; Çelik, Sevinç; Karabacak, Tuba; Erbarut Seven, İpek; Ataizi Çelikel, Çiğdem; Gücin, Zuhal; Ekinci, Özgür; Akyol, Gülen (Federation of Turkish Pathology Societies, 2018)Objective: As there is continuing disagreement among the observers on the differential diagnosis between the epithelial changes/lesions and neoplasms of the gallbladder, this multicentre study was planned in order to assess ... -
Whipple-ables: clinicopathologic comparison of 1032 cancers removed by pancreatoduodenectomy based on pathologic re-review using refined site-specific criteria
Balcı, Serdar; Reid, Michelle; Erbarut Seven, İpek; Saka, Burcu; Pehlivanoğlu, Burçin; Memiş, Bahar; Bağcı, Pelin; Baştürk, Olca; Adsay, N. Volkan (Nature Publishing Group, 2020)Background: The literature is highly conflicted on the differential clinicopathologic characteristics of cancers arising from differentcompartments of the ampulla-pancreato-biliary tract and duodenum that are removed by ... -
Whipple-ables: clinicopathologic comparison of 1032 cancers removed by pancreatoduodenectomy based on pathologic re-review using refined site-specific criteria
Balcı, Serdar; Reid, Michelle; Erbarut Seven, İpek; Saka, Burcu; Pehlivanoğlu, Burçin; Memiş, Bahar; Bağcı, Pelin; Baştürk, Olca; Adsay, N. Volkan (Nature Publishing Group, 2020)Background: The literature is highly conflicted on the differential clinicopathologic characteristics of cancers arising from differentcompartments of the ampulla-pancreato-biliary tract and duodenum that are removed by ...
