Miyagi Yoshihiro

写真a

Title

Assistant Professor

Researcher Number(JSPS Kakenhi)

00866717
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Current Affiliation Organization 【 display / non-display 】

  • Duty   University of the Ryukyus   Hospital   Assistant Professor  

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University 【 display / non-display 】

  • 2003.04
    -
    2009.03

    Shinshu University   Faculty of Medicine   Graduated

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Acquisition of a qualification 【 display / non-display 】

  • Doctor

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Published Papers 【 display / non-display 】

  • Primary Neuroendocrine Tumor Arising with a Retroperitoneal Mature Cystic Teratoma in an Adult: A Case Report

    Hayashi Yuki, Kinjo Tatsuya, Nishigaki Taishi, Miyagi Yoshihiro, Nakagawa Yutaka, Takatsuki Mitsuhisa

    The Japanese Journal of Gastroenterological Surgery ( The Japanese Society of Gastroenterological Surgery )  54 ( 4 ) 293 - 301   2021.04

    Type of publication: Research paper (scientific journal)

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    <p>A 10-cm pelvic tumor was incidentally detected in a 26-year-old woman in screening during pregnancy. Laparoscopy revealed a retroperitoneal tumor, which was suspected to be malignant because a solid lesion was found adjacent to the cystic lesion. She was then referred to our hospital for treatment. Abdominal contrast-enhanced CT and MRI showed a multicystic tumor with an enhanced small nodule at the dorsal side of the tumor that was found in front of the sacrum. Surgical resection was performed and the pathological findings after surgery revealed that the tumor was a retroperitoneal mature cystic teratoma and the small nodule was a neuroendocrine tumor (NET). The clinical course after surgery was unremarkable and the patient was discharged on the 7th day after surgery. Retroperitoneal mature cystic teratomas are relatively rare in adults. Since it has been reported that the frequency of malignant transformation increases with age and the prognosis is poor after this transformation, early surgery is recommended. We report this case as a very rare example of a retroperitoneal mature cystic teratoma containing a NET in an adult, and we include a literature review.</p>

  • A Case Report of Laparoscopic Resection of Primary Round Ligament Leiomyoma

    CHINEN Itaru, KINJO Tatsuya, MIYAGI Yoshihiro, TAKATSUKI Mitsuhisa

    Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) ( Japan Surgical Association )  82 ( 5 ) 972 - 976   2021

    Type of publication: Research paper (scientific journal)

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    <p>A 53-year-old woman presented to a clinic because of right lower quadrant abdominal intermittent pain once every two months for three years. An ovarian tumor was found by examinations, and she was referred to the department of gynecology in our hospital. A trans-vaginal ultrasound showed no evidence of the disease involving the uterus, bilateral ovaries and salpinx. An abdominal contrast-enhanced computed tomography (CT) scan showed an enhanced intra-pelvic ovoid tumor 3.5 cm in size which was adjacent to the small intestine. A pelvic contrast-enhanced magnetic resonance imaging (MRI) showed a high-intensity lesion with internal heterogeneous enhancement in T1 weighed fat suppression. A positron emission tomography scan showed an abnormally high FDG uptake in the tumor. She was diagnosed with GIST of the small intestine and was referred to our department. Laparoscopic surgery showed that the tumor was ovoid in shape with smooth surface and well movable and both the size and localization of the tumor accorded with those in the images. We found that the tumor had the origin of the round ligament of the uterus after the explosion of the tumor and then performed laparoscopically completely excision of the tumor. The histological findings showed that spindle-shaped tumor cells proliferated in disarray that were immunohistochemically positive for α-SMA and Desmin and negative for DOG-1. The tumor was diagnosed as leiomyoma of the round ligament of the uterus. The leiomyoma originated from the round ligament of the uterus is rare and we report this case with review of the literature.</p>

  • Elective staged proctocolectomy and living donor liver transplantation for colon cancer with sclerosing cholangitis-related ulcerative colitis: a case report

    Tatsuya Kinjo, Tomoharu Yoshizumi, Noboru Harada, Shingo Arakaki, Tetsu Kinjo, Akira Hokama and Mitsuhisa Takatsuki

    Surgical Case Reports   6   2020 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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    Background: Primary sclerosing cholangitis (PSC) is a well-known complication of ulcerative colitis (UC), but it is rare to encounter patients requiring both living donor liver transplantation (LDLT) and proctocolectomy. We report a case of elective two-stage surgery involving proctocolectomy performed after LDLT for a patient with early colon cancer concurrent with PSC-related UC. To our knowledge, this is the first report of concurrent cancer successfully treated with both LDLT and proctocolectomy. Case presentation: A 32-year-old Japanese man with colon cancer associated with UC underwent restorative proctocolectomy at 3 months after living donor liver transplantation (LDLT) for PSC. He was diagnosed with PSC and UC when he was a teenager. Conservative therapy was initiated to treat both PSC and UC. He had experienced recurrent cholangitis for years; therefore, a biliary stent was placed endoscopically. However, his liver function progressively deteriorated. Colonoscopic surveillance revealed early colon cancer; hence, surgical treatment was considered. PSC progressed to cirrhosis and portal hypertension; hence, LDLT was performed before restorative proctocolectomy.Three months after LDLT, we performed restorative proctocolectomy with ileal pouch–anal anastomosis. The postoperative course was uneventful. The patient was well, with good liver and bowel functions and without tumor recurrence, more than 1 year after proctocolectomy. Conclusions: With strict patient selection and careful patient management and follow-up, elective proctocolectomy may be performed safely and efectively after LDLT for concurrent early colon cancer with PSC-related UC. There are no previous reports of the use of both LDLT and proctocolectomy for the successful treatment of PSC-related UC and concurrent cancer.

  • A rare case of peritoneal deposits with carbon pigmentation after preoperative endoscopic tattooing for sigmoid colon cancer

    Hiroaki Uehara, Toshiyuki Yamazaki, Akira Iwaya, Motoharu Hirai, Masaru Komatsu, Akira Kubota, Makoto Aoki, Ikuma Shioi, Kenji Yamaguchi, Yoshihiro Miyagi, Kazuaki Kobayashi, Daisuke Sato, Naoyuki Yokoyama, Hideki Hashidate, Shirou Kuwabara, Tetsuya Otani

    International Journal of Colorectal Disease   34 ( 2 ) 355 - 358   2019.02 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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    © 2018, Springer-Verlag GmbH Germany, part of Springer Nature. Purpose: We report a case in which pigmented peritoneal deposits were found during laparoscopic surgery following preoperative endoscopic tattooing for sigmoid colon cancer. Methods: The patient’s clinical, endoscopic, and histological data from the Niigata City General Hospital were reviewed, as well as the literature on laparoscopic surgery involving the preoperative endoscopic tattoo, with a focus on the relevance of peritoneal deposits and tattooing ink. Results: A 71-year-old man presented to our hospital complaining of vomiting and abdominal distention. Abdominal computed tomography revealed obstructive sigmoid colon cancer. An emergency endoscopic colon stenting procedure and injection of 0.2 ml India ink to the submucosal layer of the tumor’s anal side were performed. Laparoscopic-assisted sigmoid colectomy was done 14 days after stenting. At surgery, seven small peritoneal deposits were seen in the rectovesical pouch and at the site adjacent to the tumor. All peritoneal deposits were stained by the ink. Gross leakage of the ink into extraintestinal sites was seen. The seven peritoneal deposits were resected under laparoscope. Histological findings revealed that the seven peritoneal deposits were composed of adenocarcinoma and carbon pigments. Immunohistochemical staining for cluster of differentiation 163 showed that the carbon pigments in the peritoneal deposits were within macrophages. Conclusions: The possibility of the tattooing procedure causing peritoneal dissemination cannot be completely denied, but it can be hypothesized that the carbon pigmentation was transferred to peritoneal deposits by macrophages. In the future, we hope that this phenomenon becomes a keystone for diagnoses and treatments for peritoneal dissemination.

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  • A CASE OF APPENDICEAL TRUE DIVERTICULITIS TREATED BY LAPAROSCOPIC APPENDECTOMY

      77 ( 4 ) 853 - 857   2016 [ Peer Review Accepted ]

    Type of publication: Research paper (scientific journal)

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    A 54-year-old man visited our hospital with the chief complaint of right lower quadrant abdominal pain. An abdominal computed tomography (CT) scan revealed multiple diverticula in the appendix and an increase in the surrounding fat concentration. Based on these findings, the patient was diagnosed as having appendiceal diverticulitis. A laparoscopic appendectomy was thus performed. The histopathological studies revealed multiple true diverticula with thinning muscular layer in the appendix, one of which showed inflammation. Finally true appendiceal diverticulitis was diagnosed. Appendiceal diverticulitis is reported to be associated with perforation in a high frequency, and to be extremely difficult to diagnose preoperatively. It is often diagnosed after surgery with the diagnosis of acute appendicitis. Almost all diverticula of the appendix are pseudodiverticula and true diverticulum of the appendix is rare. We report a case of true appendiceal diverticulitis.

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Other Papers 【 display / non-display 】

  • 膵頭十二指腸切除時におけるLandmarkとしてのHenleの胃静脈幹

    佐藤 大輔, 横山 直行, 小松 優, 平井 基晴, 窪田 晃, 塩井 生馬, 青木 真, 山口 賢二, 上原 拓明, 宮城 良浩

    日本消化器外科学会総会 ( (一社)日本消化器外科学会 )  74回   P223 - 1   2019.07

     

  • 食道胃接合部癌に対する胸腔鏡を用いた再建手技の有用性

    小林 和明, 桑原 史郎, 平井 基晴, 窪田 晃, 青木 真, 塩井 生馬, 上原 拓明, 宮城 良浩, 佐藤 大輔, 岩谷 昭

    日本消化器外科学会総会 ( (一社)日本消化器外科学会 )  74回   RS1 - 2   2019.07

     

  • cStageIV大腸癌の予後因子 原発巣の局在と遺伝子変異を中心に

    野上 仁, 井田 在香, 宮城 良浩, 八木 亮磨, 渡辺 徹, 丸山 聡, 瀧井 康公

    日本大腸肛門病学会雑誌 ( (一社)日本大腸肛門病学会 )  72 ( 5 ) 305 - 305   2019.05

     

  • 当院における右側および左側StageIV大腸癌における原発巣の治療戦略と成績の変遷

    八木 亮磨, 瀧井 康公, 宮城 良浩, 渡辺 徹, 野上 仁, 丸山 聡

    日本大腸肛門病学会雑誌 ( (一社)日本大腸肛門病学会 )  72 ( 5 ) 302 - 302   2019.05

     

  • 当科における大腸SM癌のリンパ節転移および再発の検討

    上原 拓明, 山崎 俊幸, 岩谷 昭, 小松 優, 平井 基晴, 窪田 晃, 青木 真, 塩井 生馬, 山口 賢二, 宮城 良浩, 小林 和明, 佐藤 大輔, 横山 直行, 桑原 史郎, 大谷 哲也

    日本大腸肛門病学会雑誌 ( (一社)日本大腸肛門病学会 )  72 ( 5 ) 369 - 369   2019.05

     

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2024.04  -  2027.03 

    Direct: 3,600,000 (YEN)  Overheads: 4,680,000 (YEN)  Total: 1,080,000 (YEN)

  • Grant-in-Aid for Scientific Research(C)

    Project Year: 2024.04  -  2027.03 

    Direct: 3,600,000 (YEN)  Overheads: 4,680,000 (YEN)  Total: 1,080,000 (YEN)

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