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Featured researches published by Kenzo Okada.


Breast Cancer | 2003

Synchronous bilateral noninvasive ductal carcinoma of the male breast: a case report.

Kenzo Okada; Shinsuke Kajiwara; Hitoshi Tanaka; Goi Sakamoto

A 45-year-old man developed a bloody discharge from his right nipple. Physical examination revealed bloody discharge from his left nipple also but no swelling, breast mass, or axillary lymph nodes. He then underwent bilateral total glandectomy without axillary dissection. Histological examination revealed low-grade ductal carcinomain situ (DCIS) with a low-papillary and cribriform pattern measuring about 4 mm in diameter in the breast bilaterally. To our knowledge, this is the first report of synchronous bilateral DCIS in a male. Since this patient’s hormonal profile showed a relatively high blood level of prolactin, the causative relationship between hyperprolactinemia and male breast cancer is discussed. Including our case, 5 of 6 cases reported thus far have been bilateral, and 4 of the 6 cases have been synchronous. We emphasize that the contralateral breast should also be tested or followed in male breast cancer patients with hyperprolactinemia.


Archive | 1993

Laminin Levels and Stage of Vascular Invasion as Predictive Factors of Liver Metastasis in Colon Cancer

Toshio Imada; Toshitaka Takehana; Makoto Takahashi; Kuniyasu Fukuzawa; Yasushi Rino; Yuji Yamamoto; Akihiko Matsumoto; Kenzo Okada; Takashi Suda; Hiroshi Takemura

The glycoprotein laminin mediates the adhesion of tumor cells to the basement membrane prior to invasion. In this study, we determined the laminin levels of the peripheral and returned venous blood in 46 colon cancer patients without detectable liver metastasis. The laminin levels of both peripheral and returned blood were significantly higher in the cases with vascular invasion compared to the group without it. However, no correlation was observed between the stage of vascular invasion and laminin levels.


Archive | 1993

Evaluation of Combination Chemotherapy Using 5-FU, Leucovorin, and CDDP (FLP Therapy) Against Recurrent or Advanced Stomach Cancer

Tamotsu Okugawa; Yasushi Rino; Kenzo Okada; Osamu Kobayashi; Motonori Sairenji; Hisahiko Motohashi

Between July 1991 and October 1992, we performed combination chemotherapy consisting of 5-FU, leucovorin, and CDDP (FLP therapy) against recurrent or advanced stomach cancer. The outcome was CR in 1, PR in 7, NC in 2, and PD in 11 of the 1 levaluable patients, resulting in an overall response rate of 72.7%. Performance status was improved in all patients. All toxicities were grade 3 or below. Consequently, FLP therapy was, hereafter, expected to be safety and effective against recurrent and advanced stomach cancer, and to improve the QOL.


Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2005

THREE CASES OF ADULT INTUSSUSCEPTION CAUSED BY AN INTESTINAL LIPOMA

Hiroki Sugishita; Kazuhide Iwakawa; Yasuaki Kashu; Kenzo Okada; Hidenori Kiyochi; Shinsuke Kajiwara


Journal of Clinical Biochemistry and Nutrition | 1992

Tumor Glutamine Level Is Negatively Correlated with Tumor Weight in Tumor-Bearing Rats Administered a Glutamine Antagonist and a New Imbalanced Amino Acid Solution

Kenzo Okada; Hiroo Takehara; Akira Okada


Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2005

LAPAROSCOPY-ASSISTED DISTAL GASTRECTOMY FOR EARLY GASTRIC CANCER

Hidenori Kiyochi; Shinsuke Kajiwara; Kazuhide Iwakawa; Kenzo Okada; Shunsuke Iimori; Hiroki Sugishita; Hitoshi Inoue; Yasuaki Kashu; Yasushi Matsumoto; Toshihiko Sakao


Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2005

A CASE OF ONE-STAGE OPERATION FOR CONCOMITANT ABDOMINAL AORTIC ANEURYSM AND RECTAL CANCER

Hiroki Sugishita; Kazuhide Iwakawa; Toshihiko Sakao; Yasuaki Kashu; Kenzo Okada; Shinsuke Kajiwara


Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 1992

Heterogeneity of DNA Content According to the Depth of Invasion in Colorectal Cancer.

Toshio Imada; Takashi Suda; Fumihiko Kito; Kenzo Okada; Takako Okada; Kuniyasu Fukuzawa; Yoshihiro Moriwaki; Hirotoshi Akiyama; Hiroshi Takemura; Akihiko Matsumoto


Nihon Rinsho Geka Gakkai Zasshi (journal of Japan Surgical Association) | 2006

A CASE OF GIANT CELL TUMOR OF THE RIB

Hiroki Sugishita; Hidenori Kiyochi; Shinsuke Kajiwara; Kazuhide Iwakawa; Kenzo Okada; Toshihiko Sakao


Jpn J Gastroenterol Surg, Nihon Shokaki Geka Gakkai zasshi | 2004

A Case of Biliary Papillomatosis with Focal Adenocarcinoma

Yasuki Hachisuka; Kazuhide Iwakawa; Shinsuke Kajiwara; Hitoshi Tanaka; Yoshihito Ono; Yasuaki Kashu; Hidenori Kiyochi; Kenzo Okada; Toshihiko Sakao; Kenji Kurihara

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Takashi Suda

Yokohama City University

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Toshio Imada

Yokohama City University

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Yasushi Rino

Yokohama City University

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