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Dive into the research topics where Tetsuo Asakura is active.

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Featured researches published by Tetsuo Asakura.


International Journal of Clinical Oncology | 2009

Nonbacterial thrombotic endocarditis complicated with stage Ia ovarian cancer

Hirohiko Tanaka; Masako Ito; Kayo Yoshida; Tetsuo Asakura; Haruki Taniguchi

Nonbacterial thrombotic endocarditis (NBTE) commonly occurs in advanced malignancies associated with a cancer-related hypercoagulable state, but the prevalence of NBTE in patients with less advanced malignancies is unknown. A 46-year-old woman had multiple thromboembolic events and disseminated intravascular coagulation on admission. Transthoracic echocardiography showed several growths on the mitral valve. Pelvic magnetic resonance imaging revealed a rapidly enlarging large tumor. In spite of anticoagulation therapy, she died 1.5 months after admission. At autopsy, NBTE with stage Ia ovarian cancer was diagnosed. In cases of higher-growth rate tumors with abundant necrosis, NBTE may occur in early-stage (even in stage Ia) ovarian cancer. In the majority of stage Ia ovarian cancers, curative surgical resection can be done. Prognostic improvement may be gained by such positive intervention, although this depends on the patient’s general condition when NBTE occurs. With tumor resection, there is a possibility that the patient will recover from the hypercoagulable state and a poor outcome will be avoided.


Journal of Obstetrics and Gynaecology Research | 2011

Low-grade appendiceal mucinous neoplasm with disseminated peritoneal adenomucinosis involving the uterus, mimicking primary mucinous endometrial adenocarcinoma: A case report

Hirohiko Tanaka; Takumi Kobayashi; Kayo Yoshida; Tetsuo Asakura; Haruki Taniguchi; Yoshiki Mikami

We present a patient with a low‐grade appendiceal mucinous neoplasm, resulting in disseminated peritoneal adenomucinosis (pseudomyxoma peritonei) with uterine involvement, and mimicking primary mucinous endometrial adenocarcinoma. On immunohistochemistry, neoplastic glands were cytokeratin 7‐negative and cytokeratin 20‐positive, indicating a gastrointestinal origin rather than a primary ovarian mucinous neoplasm. A diagnosis of uterine metastasis of appendiceal origin was made, based on the constellation of clinicopathological findings, that is, preceding appendiceal neoplasm, peritoneal involvement, absence of coexisting prototypical endometrioid adenocarcinoma or endometrial hyperplasia. The patient underwent hysterectomy and there was no evidence of disease progression at the 12‐month follow up. This suggested the indolent nature of this particular neoplasm, despite its advanced stage.


Asian Journal of Endoscopic Surgery | 2011

A case of thyroid-type papillary carcinoma derived from ovarian mature cystic teratoma, resected by laparoscopic surgery.

Hirohiko Tanaka; Y Sakakura; T Kobayashi; Kayo Yoshida; Tetsuo Asakura; Haruki Taniguchi

Follicular variant thyroid‐type papillary carcinoma (FVTPC) arising from thyroid tissue in mature cystic teratoma of the left ovary is extremely rare, and it is not easy to diagnose preoperatively. However, with reports of an early postoperative death, we must prudently select the strategy for this lesion.


Asian Journal of Endoscopic Surgery | 2013

Cotyledonoid dissecting leiomyoma treated by laparoscopic surgery: a case report.

Hirohiko Tanaka; Kuniaki Toriyabe; Tokihiro Senda; Yasufumi Sakakura; Kayo Yoshida; Tetsuo Asakura; Haruki Taniguchi; Kenji Nagao

A cotyledonoid dissecting leiomyoma is categorized as a leiomyoma with an unusual growth pattern, which is characterized by remarkable extrauterine bulbous growth in continuity with a dissecting myometrial component. A 36‐year‐old patient was preoperatively diagnosed with a mature cystic teratoma of the left ovary, and according to MRI, the tumor protruded from the uterus into the right broad ligament and was 10 cm in diameter. She underwent laparoscopic surgery to resect ovarian teratoma and the tumor under the right broad ligament. The tumor was almost completely resected and diagnosed as a cotyledonoid dissecting leiomyoma based on intraoperative and pathological findings. Recurrence was not seen for 26 months postoperatively in our case. Gross specimens are often mistaken for malignant lesions, but this was a benign disease. Even if some remnants of the leiomyoma remained postoperatively, recurrence has never been reported. When a cotyledonoid dissecting leiomyoma is resected laparoscopically, intrapelvic structures around it, such as the ureter, uterine artery, bladder, rectum and external iliac vessels, must be given careful attention.


Molecular and Clinical Oncology | 2016

Pregnancy and cesarean delivery after multimodal therapy for vulvar carcinoma: A case report

Kuniaki Toriyabe; Haruki Taniguchi; Tokihiro Senda; Masako Nakano; Yoshinari Kobayashi; Miho Izawa; Hirohiko Tanaka; Tetsuo Asakura; Tsutomu Tabata; Tomoaki Ikeda


Japanese Journal of Gynecologic and Obstetric Endoscopy | 2016

Laparoscopic surgery for endometrial cancer covered by statutory health insurance

Noboru Akiyama; Hirohiko Tanaka; Tomokazu Tokuyama; Yuki Minami; Masako Nakano; Yoshinari Kobayashi; Miho Izawa; Tetsuo Asakura; Haruki Taniguchi; Takashi Motohashi; Hitomi Oda; Tokihiro Senda


Japanese Journal of Gynecologic and Obstetric Endoscopy | 2016

Laparoscopic management of adnexal masses during pregnancy in our institution

Yoshinari Kobayashi; Hirohiko Tanaka; Sho Takakura; Tomokazu Tokuyama; Noboru Akiyama; Yuki Ouchi; Yuki Minami; Masako Nakano; Miho Izawa; Tetsuo Asakura; Haruki Taniguchi


Japanese Journal of Gynecologic and Obstetric Endoscopy | 2016

A case of external iliac artery injury during total laparoscopic radical hysterectomy managed laparoscopically

Sho Takakura; Tetsuo Asakura; Hirohiko Tanaka; Noboru Akiyama; Tomokazu Tokuyama; Yuki Minami; Masako Nakano; Yoshinari Kobayashi; Miho Izawa; Haruki Taniguchi; Takashi Motohashi; Eiji Kondo; Tomoaki Ikeda


Japanese Journal of Gynecologic and Obstetric Endoscopy | 2013

A case of ovarian clear cell borderline tumor treated by laparoscopic restaging surgery

Kuniaki Toriyabe; Hirohiko Tanaka; Tokihiro Senda; Masako Ito; Miho Izawa; Tetsuo Asakura; Haruki Taniguchi; Kenji Nagao; Eiji Kondo


Japanese Journal of Gynecologic and Obstetric Endoscopy | 2013

A case of mature teratoma of the fallopian tube treated by laparoscopic surgery

Kuniaki Toriyabe; Hirohiko Tanaka; Tokihiro Senda; Masako Ito; Yoshinari Kobayashi; Miho Izawa; Tetsuo Asakura; Haruki Taniguchi

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Masako Ito

Fujita Health University

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