Kenji Niwa - Articles - Scientific Research Publishing

Primary Small Cell Neuroendocrine Carcinoma of the Endometrium: A Cytologically Diagnosed Case with Immunocytochemical, Immunohistochemical, and Electron Microscopic Features (Articles)

Kentaro Nagata, Kenji Niwa, Sakae Mori, Keigo Kuwabara, Motoki Takenaka, Yoshio Yamaguchi, Kentaro Niwa, Takuji Tanaka

Open Journal of Pathology Vol.10 No.4，September 14, 2020

DOI: 10.4236/ojpathology.2020.104011 664 Downloads 2,610 Views Citations
Congenital Dysfibrinogenemia Presented with Massive Hematomas Formed after Hysterectomy (Articles)

Kenji Niwa, Kentaro Nagata, Takefumi Nakagami, Ryuichiro Shimaoka, Kentaro Niwa, Motoki Takenaka, Takuji Tanaka, Nobuo Okumura

Case Reports in Clinical Medicine Vol.10 No.4，April 22, 2021

DOI: 10.4236/crcm.2021.104013 347 Downloads 1,105 Views Citations
Asymptomatic Anisakiasis of the Colon Diagnosed and Treated by Colonoscopy (Articles)

Tomoshi Takeda, Kenji Niwa, Akie Sano, Atsunori Kodama, Kuninori Hatasa, Yasunari Matsuno, Masao Kagami, Motoki Takenaka, Kohjiro Niwa, Takuji Tanaka

Case Reports in Clinical Medicine Vol.9 No.9，September 21, 2020

DOI: 10.4236/crcm.2020.99041 517 Downloads 1,763 Views Citations
Primary Ovarian Carcinosarcoma: Cytological, Pathological, Immunocytochemical, and Immunohistochemical Features (Articles)

Kenji Niwa, Sakae Mori, Keigo Kuwabara, Kentaro Nagata, Motoki Takenaka, Tomomi Shiga, Yoshio Yamaguchi, Kentaro Niwa, Takuji Tanaka

Open Journal of Pathology Vol.11 No.1，January 21, 2021

DOI: 10.4236/ojpathology.2021.111003 634 Downloads 1,824 Views Citations
Cytology and Genetic Analysis of Liver Echinococcosis in a Woman Came from Bolivia (Articles)

Naoki Futamra, Kenji Niwa, Masato Ohta, Sakae Mori, Ayumi Hara, Yuzo Niwa, Yoshifumi Katagiri, Takuji Tanaka, Kentaro Nakamoto

Case Reports in Clinical Medicine Vol.11 No.9，September 22, 2022

DOI: 10.4236/crcm.2022.119056 145 Downloads 624 Views Citations
Primary Serous Cystadenocarcinoma of Broad Ligament: A Case Report with Laparoscopic, Histopathologic and Immunohistochemical Findings (Articles)

Kenji Niwa, Motoki Takenaka, Takeaki Saitake, Tiger Koike, Kentaro Nagata, Kentaro Niwa, Kohjiro Niwa, Sakae Mori, Keigo Kuwabara, Akane Onogi, Takuji Tanaka

Open Journal of Pathology Vol.12 No.1，December 13, 2021

DOI: 10.4236/ojpathology.2022.121003 215 Downloads 1,315 Views Citations
Proliferative Brenner Tumor with Borderline Mucinous Cystadenocarcinoma of the Ovary in a 75-Year-Old Woman (Articles)

Kenji Niwa, Hiroshi Makino, Yoshio Yamaguchi, Sakae Mori, Nozomi Narikawa, Takuji Tanaka

Open Journal of Pathology Vol.4 No.2，April 22, 2014

DOI: 10.4236/ojpathology.2014.42008 4,519 Downloads 6,056 Views Citations
Umbilical Endometriosis without Pelvic Surgery (Articles)

Kenji Niwa, Yusuke Mizuno, Ryuichiro Yano, Yoko Ueda, Nozomi Narikawa, Takuji Tanaka

Open Journal of Pathology Vol.4 No.4，October 10, 2014

DOI: 10.4236/ojpathology.2014.44022 2,915 Downloads 3,782 Views Citations
Case Report: A Laparoscopic Treated Case of Deep Infiltrating Endometriosis with Vaginal Invasion Diagnosed by Vaginal Cytology (Articles)

Kenji Niwa, Ryuichiro Yano, Yui Hatanaka, Sakae Mori, Yoshio Yamaguchi, Minako Mori, Yoko Ueda, Takuji Tanaka

Open Journal of Pathology Vol.5 No.3，July 9, 2015

DOI: 10.4236/ojpathology.2015.53012 4,365 Downloads 5,552 Views Citations
Conservative Medroxyprogesterone Acetate Therapy in Early Stage of Endometrial Carcinoma Associated with Phosphatase and Tensin Homolog Expression (Articles)

Kenji Niwa, Minako Mori, Tatsuhiko Miyazaki, Takuji Tanaka, Ken-Ichiro Morishige

Open Journal of Pathology Vol.7 No.1，December 8, 2016

DOI: 10.4236/ojpathology.2017.71001 1,527 Downloads 2,605 Views Citations
Primary Fallopian Tube Adenocarcinoma Discovered with the Vaginal Cytology: A Case Report with Pathological and Immunohistochemical Investigation (Case Report)

Tomoko Honda, Yuka Hiraku, Ryogo Aoki, Kenji Niwa, Naoki Watanabe, Takuji Tanaka

Open Journal of Pathology Vol.8 No.3，July 13, 2018

DOI: 10.4236/ojpathology.2018.83010 1,198 Downloads 2,444 Views Citations
A Case of Struma Ovarii Diagnosed by Cytology during Laparoscopic Surgery (Case Report)

Kenji Niwa, Motoki Takenaka, Tsuneo Ishihara, Sakae Mori, Keigo Kuwabara, Saki Murase, Yoshio Yamaguchi, Takuji Tanaka

Open Journal of Pathology Vol.9 No.1，December 17, 2018

DOI: 10.4236/ojpathology.2019.91001 1,231 Downloads 2,483 Views Citations
Primary Urethral Malignant Melanoma in an Elder Woman Diagnosed by Urine Cytology (Case Report)

Kenji Niwa, Tsuneo Ishihara, Sakae Mori, Keigo Kuwabara, Saki Murase, Motoki Takenaka, Yoshio Yamaguchi, Takuji Tanaka

Open Journal of Pathology Vol.10 No.1，December 31, 2019

DOI: 10.4236/ojpathology.2020.101002 628 Downloads 1,629 Views Citations
A Case of Serous Tubal Intraepithelial Carcinoma Diagnosed by Cytology during the Operation (Case Report)

Kenji Niwa, Tsuneo Ishihara, Yoko Ueda, Motoki Takenaka, Tomomi Shiga, Sakae Mori, Keigo Kuwabara, Yoshio Yamaguchi, Takuji Tanaka

Open Journal of Pathology Vol.8 No.3，June 27, 2018

DOI: 10.4236/ojpathology.2018.83008 1,305 Downloads 2,615 Views Citations
Uncertainty in a Measurement of Density Dependence on Population Fluctuations (Articles)

Hiro-Sato Niwa

Applied Mathematics Vol.5 No.8，April 29, 2014

DOI: 10.4236/am.2014.58104 4,796 Downloads 6,349 Views Citations
Evolution from Primitive Life to Homo sapiens Based on Visible Genome Structures: The Amino Acid World (Articles)

Kenji Sorimachi

Natural Science Vol.1 No.2，September 28, 2009

DOI: 10.4236/ns.2009.12013 6,855 Downloads 12,847 Views Citations
Genomic data provides simple evidence for a single origin of life (Articles)

Kenji Sorimachi

Natural Science Vol.2 No.5，June 2, 2010

DOI: 10.4236/ns.2010.25065 6,022 Downloads 11,377 Views Citations
Codon evolution in double-stranded organelle DNA: strong regulation of homonucleotides and their analog alternations (Articles)

Kenji Sorimachi

Natural Science Vol.2 No.8，August 25, 2010

DOI: 10.4236/ns.2010.28106 5,335 Downloads 9,172 Views Citations
Evolution based on genome structure: the “diagonal genome universe” (Articles)

Kenji Sorimachi

Natural Science Vol.2 No.10，October 29, 2010

DOI: 10.4236/ns.2010.210137 6,606 Downloads 12,301 Views Citations
A Comment on Reis (Articles)

Kenji Miyazaki

Theoretical Economics Letters Vol.1 No.3，November 3, 2011

DOI: 10.4236/tel.2011.13019 5,749 Downloads 10,020 Views Citations

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