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  1. Article: [A Case of Rectal Cancer with Lymph Node Metastasis Diagnosed as Intramucosal Cancer].

    Katada, Takeyasu / Teranishi, Futoshi / Shibata, Takahiro / Aoyama, Yoshinaga / Harata, Shinnosuke / Shinoda, Noriyuki

    Gan to kagaku ryoho. Cancer & chemotherapy

    2022  Volume 48, Issue 13, Page(s) 1691–1693

    Abstract: The patient was a 62-year-old man in whom 0-Ⅱa plus Ⅱc lesions in Rs were identified during follow-up observation of multiple colorectal polyps that were found during colonoscopy performed for the examination of fecal occult blood. CT showed no ... ...

    Abstract The patient was a 62-year-old man in whom 0-Ⅱa plus Ⅱc lesions in Rs were identified during follow-up observation of multiple colorectal polyps that were found during colonoscopy performed for the examination of fecal occult blood. CT showed no lymphadenopathy or distant metastasis to other organs. Laparoscopic-assisted high anterior resection of the rectum was performed with a diagnosis of clinical stage Ⅰ. Pathologically, there was a well-to-moderately differentiated tubular adenocarcinoma that remained in the lamina propria; however, 1 metastasis was found in the lymph node adjacent to the rectum(#251). Therefore, adjuvant chemotherapy was performed for 6 months after the operation, and 5 years have passed with no recurrence. Here, we report a case with no apparent submucosal invasion but with lymph node metastasis. We confirm recurrence-free survival for 5 years after surgery.
    MeSH term(s) Adenocarcinoma/drug therapy ; Adenocarcinoma/surgery ; Humans ; Lymph Nodes ; Lymphatic Metastasis ; Male ; Middle Aged ; Rectal Neoplasms/drug therapy ; Rectal Neoplasms/surgery ; Rectum
    Language Japanese
    Publishing date 2022-01-19
    Publishing country Japan
    Document type Case Reports ; Journal Article
    ZDB-ID 604842-0
    ISSN 0385-0684
    ISSN 0385-0684
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Suctionable Gauze Ball Operated by the Console Surgeon Overcomes Wet Scenes during Robotic Rectal Surgery.

    Watanabe, Kaori / Ushigome, Hajime / Takahashi, Hiroki / Kato, Akira / Harata, Shinnosuke / Fujii, Yoshiaki / Yanagita, Takeshi / Suzuki, Takuya / Shiga, Kazuyoshi / Ogawa, Ryo / Matsuo, Yoichi / Takiguchi, Shuji

    Journal of the anus, rectum and colon

    2024  Volume 8, Issue 1, Page(s) 43–47

    Abstract: Although robotic rectal resections are now widely performed, there are few robotic suction tools that can be easily used by console surgeons. It can therefore be difficult to maintain a clear visual field in the pelvis when there is effusion and bleeding ...

    Abstract Although robotic rectal resections are now widely performed, there are few robotic suction tools that can be easily used by console surgeons. It can therefore be difficult to maintain a clear visual field in the pelvis when there is effusion and bleeding from either a highly advanced cancer or from preoperative cancer treatment. In this report, we introduce our unique surgical technique that uses a soft catheter with a small gauze ball attached, inserted through the assistant port. This simple and inexpensive "instrument" can be used by the console surgeon as a retractor as well as a reliable suction device to secure their view of the operative field in the pelvis. This technique can be used in a narrow surgical field and does not rely on an assistant surgeon, making it potentially applicable to all types of surgery.
    Language English
    Publishing date 2024-01-25
    Publishing country Japan
    Document type Journal Article
    ISSN 2432-3853
    ISSN (online) 2432-3853
    DOI 10.23922/jarc.2023-029
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Robotic distal gastrectomy plus spleen-preserving distal pancreatectomy: optimal resection for simultaneous gastric cancer and intraductal papillary mucinous neoplasm of the pancreatic body.

    Ito, Sunao / Sagawa, Hiroyuki / Fujita, Kohei / Saito, Masaki / Harata, Shinnosuke / Hayakawa, Shunsuke / Saito, Kenta / Tanaka, Tatsuya / Morimoto, Mamoru / Ogawa, Ryo / Takahashi, Hiroki / Matsuo, Yoichi / Takiguchi, Shuji

    Surgical case reports

    2024  Volume 10, Issue 1, Page(s) 38

    Abstract: Background: Organ-preserving surgery has recently gained increasing attention. However, performing the surgery for duplicated gastric and distal pancreatic tumors is difficult because of procedural complexity and concerns of remnant gastric necrosis. We ...

    Abstract Background: Organ-preserving surgery has recently gained increasing attention. However, performing the surgery for duplicated gastric and distal pancreatic tumors is difficult because of procedural complexity and concerns of remnant gastric necrosis. We present the first case of simultaneous robotic distal gastrectomy plus spleen-preserving distal pancreatectomy in a patient with overlapping gastric cancer and intraductal papillary mucinous neoplasm.
    Case presentation: A 78-year-old man was diagnosed with gastric cancer in the middle stomach and intraductal papillary mucinous neoplasm of the pancreatic body. Radical cure surgery was performed using the da Vinci Xi robotic system. Conventional distal gastrectomy was initially completed using near-infrared ray guidance when transecting the stomach. After dividing the pancreas, the parenchyma of the distal pancreas was detached from the splenic artery and vein; multiple branches from these splenic vessels were dissected. Indocyanine green imaging confirmed sufficient blood flow in the splenic vessels and perfusion of the remnant stomach. Ultimately, gastrointestinal reconstruction was performed, and the postoperative course was uneventful.
    Conclusions: The robotic distal gastrectomy plus spleen-preserving distal pancreatectomy procedure was safely performed. Compared to the total gastrectomy plus distal pancreatectomy with splenectomy procedure, this technique may improve the quality of dietary life, reduce weight loss, and prevent complications associated with splenectomy.
    Language English
    Publishing date 2024-02-09
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2809613-7
    ISSN 2198-7793
    ISSN 2198-7793
    DOI 10.1186/s40792-024-01831-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: [A Case of Transverse Colon Cancer with Gastrointestinal Amyloidosis Prevented from Anastomotic Leakage by Multidimensional Approach].

    Kusudo, Natsuki / Suzuki, Takuya / Uehara, Shuhei / Kato, Akira / Fujii, Yoshiaki / Harata, Shinnosuke / Watanabe, Kaori / Yanagita, Takeshi / Ushigome, Hajime / Ogawa, Ryo / Takahashi, Hiroki / Matsuo, Yoichi / Mitsui, Akira / Kimura, Masahiro / Takiguchi, Shuji

    Gan to kagaku ryoho. Cancer & chemotherapy

    2024  Volume 51, Issue 1, Page(s) 90–92

    Abstract: The patient was a 68-year-old woman who was on hemodialysis due to systemic amyloidosis and nephrotic syndrome. Biopsy revealed amyloid deposition in the stomach, duodenum, and colon. A transverse colon tumor was found on a follow- up CT after the aortic ...

    Abstract The patient was a 68-year-old woman who was on hemodialysis due to systemic amyloidosis and nephrotic syndrome. Biopsy revealed amyloid deposition in the stomach, duodenum, and colon. A transverse colon tumor was found on a follow- up CT after the aortic dissection surgery. We performed lower gastrointestinal endoscopy and contrast-enhanced CT and diagnosed transverse colon cancer with gastric wall infiltration(cStage Ⅲc). We considered that transverse colon resection was oncologically sufficient. However, due to concurrent gastrointestinal amyloidosis, which increased the risk of anastomotic leakage we performed laparoscopic extended right hemicolectomy to avoid colon-colon anastomosis with partial gastrectomy. Additionally intraoperative indocyanine green(ICG)fluorescence imaging showed that the fluorescence signal in the small intestinal wall was satisfactory, while it was weak in the colon wall. As a result, we suspected of impaired blood flow of colon wall due to an amyloidosis, so we additionally created a loop ileostomy. It is said that gastrointestinal amyloidosis raises the risk of anastomotic leakage. A case of transverse colon cancer complicated by gastrointestinal amyloidosis in which we successfully prevented anastomotic leakage through a multidimensional evaluation and approach is reported, along with a literature review.
    MeSH term(s) Female ; Humans ; Aged ; Anastomotic Leak ; Colon, Transverse/surgery ; Amyloidosis/complications ; Amyloidosis/surgery ; Colonic Neoplasms/complications ; Colonic Neoplasms/surgery ; Gastrointestinal Diseases
    Language Japanese
    Publishing date 2024-01-22
    Publishing country Japan
    Document type Review ; Case Reports ; English Abstract ; Journal Article
    ZDB-ID 604842-0
    ISSN 0385-0684
    ISSN 0385-0684
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Spontaneous regression of advanced transverse colon cancer with deficient mismatch repair: a case report.

    Harata, Shinnosuke / Takahashi, Hiroki / Ando, Nanako / Kato, Akira / Watanabe, Kaori / Yanagita, Takeshi / Suzuki, Takuya / Ushigome, Hajime / Shiga, Kazuyoshi / Ogawa, Ryo / Matsuo, Yoichi / Mitsui, Akira / Kimura, Masahiro / Takiguchi, Shuji

    Surgical case reports

    2023  Volume 9, Issue 1, Page(s) 64

    Abstract: Background: Spontaneous regression (SR) of cancer occurs in 1 in 60,000-100,000 patients. This phenomenon has been reported in almost all cancer types, most commonly neuroblastoma, renal cell carcinoma, malignant melanoma, and lymphoma/leukemia. However, ...

    Abstract Background: Spontaneous regression (SR) of cancer occurs in 1 in 60,000-100,000 patients. This phenomenon has been reported in almost all cancer types, most commonly neuroblastoma, renal cell carcinoma, malignant melanoma, and lymphoma/leukemia. However, SR in colorectal cancer (CRC) is extremely rare, particularly in advanced cases. Hence, this report describes a very rare case of spontaneous regression of advanced transverse colon cancer.
    Case presentation: A 76-year-old female with anemia was diagnosed with a type II well-differentiated adenocarcinoma in the middle transverse colon. Two months later, a second colonoscopy examination was performed for preoperative marking, and it revealed tumor shrinkage and a shift to type 0-IIc morphology. Endoscopic tattooing was then performed, followed by a laparoscopic partial resection of the transverse colon with D3 lymph node dissection. However, the resected specimen contained no tumor, and colonoscopy showed no tumor remnants in the remaining colon. Histopathological examination revealed mucosal regeneration and a mucus nodule in between the submucosal and muscular layers, with no cancer cells detected. Immunohistochemical analysis revealed the loss of MutL homolog 1 (MLH1) and postmeiotic segregation increased 2 (PMS2) expression in the cancer cells of biopsied specimens, suggesting deficient mismatch repair (dMMR). The patient continues to be followed up until 6 years postoperatively, and no recurrence has been observed. In this study, we also reviewed similar reported cases of spontaneous regression of cancer involving dMMR.
    Conclusion: This study presents a rare case of spontaneous regression of advanced transverse colon cancer wherein dMMR is strongly involved. However, further accumulation of similar cases is needed to elucidate this phenomenon and to develop new treatment strategies for CRC.
    Language English
    Publishing date 2023-04-25
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2809613-7
    ISSN 2198-7793
    ISSN 2198-7793
    DOI 10.1186/s40792-023-01595-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: AZD6738 promotes the tumor suppressive effects of trifluridine in colorectal cancer cells.

    Harata, Shinnosuke / Suzuki, Takuya / Takahashi, Hiroki / Hirokawa, Takahisa / Kato, Akira / Watanabe, Kaori / Yanagita, Takeshi / Ushigome, Hajime / Shiga, Kazuyoshi / Ogawa, Ryo / Mitsui, Akira / Kimura, Masahiro / Matsuo, Yoichi / Takiguchi, Shuji

    Oncology reports

    2023  Volume 49, Issue 3

    Abstract: Ataxia telangiectasia and Rad3‑related (ATR) is a kinase that repairs DNA damage. Although inhibitors that selectively target ATR have been developed, their effectiveness in colorectal cancer has not been widely reported. The present study hypothesized ... ...

    Abstract Ataxia telangiectasia and Rad3‑related (ATR) is a kinase that repairs DNA damage. Although inhibitors that selectively target ATR have been developed, their effectiveness in colorectal cancer has not been widely reported. The present study hypothesized that anticancer agents that effectively act in the S phase before the G
    MeSH term(s) Humans ; Cell Line, Tumor ; Trifluridine/pharmacology ; Trifluridine/therapeutic use ; Tumor Suppressor Protein p53/genetics ; Frontotemporal Dementia ; Antineoplastic Agents/pharmacology ; Antineoplastic Agents/therapeutic use ; Colorectal Neoplasms/drug therapy ; Colorectal Neoplasms/genetics ; Ataxia Telangiectasia Mutated Proteins/metabolism ; Checkpoint Kinase 1/metabolism
    Chemical Substances ceralasertib (85RE35306Z) ; Trifluridine (RMW9V5RW38) ; Tumor Suppressor Protein p53 ; Antineoplastic Agents ; Ataxia Telangiectasia Mutated Proteins (EC 2.7.11.1) ; Checkpoint Kinase 1 (EC 2.7.11.1)
    Language English
    Publishing date 2023-02-03
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 1222484-4
    ISSN 1791-2431 ; 1021-335X
    ISSN (online) 1791-2431
    ISSN 1021-335X
    DOI 10.3892/or.2023.8489
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  7. Article ; Online: "Role-sharing surgery": a new surgical education system that gives beginner surgeons more chances to operate while ensuring the surgical quality of robotic surgery.

    Ushigome, Hajime / Takahashi, Hiroki / Harata, Shinnosuke / Fujii, Yoshiaki / Watanabe, Kaori / Yanagita, Takeshi / Suzuki, Takuya / Shiga, Kazuyoshi / Ogawa, Ryo / Matsuo, Yoichi / Mitsui, Akira / Kimura, Masahiro / Takiguchi, Shuji

    Surgery today

    2023  Volume 54, Issue 3, Page(s) 282–287

    Abstract: It has been pointed out that robotic surgery is more time-consuming than laparoscopic surgery, and a major challenge for the future is educating young surgeons while maintaining the surgical quality. To solve these problems, we report a role-sharing ... ...

    Abstract It has been pointed out that robotic surgery is more time-consuming than laparoscopic surgery, and a major challenge for the future is educating young surgeons while maintaining the surgical quality. To solve these problems, we report a role-sharing surgery (RSS) approach in which the surgery is divided into several areas and timetabled, with roles shared by several operators. We performed RSS for 19 standard colorectal cancer surgeries. The surgery was completed within + 28 min of the scheduled operation time, and a beginner robotic surgeon (BRS) was able to perform approximately 66% of the total surgery. There were no statistically significant differences in the short-term outcomes between the RSS and conventional surgery groups. Based on these findings, RSS has the potential to be the best practice for educating BRSs in robotic surgery, the use of which is expected to increase steadily in the future.
    MeSH term(s) Humans ; Robotic Surgical Procedures/education ; Surgeons/education ; Laparoscopy/education
    Language English
    Publishing date 2023-09-30
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 1115435-4
    ISSN 1436-2813 ; 0941-1291
    ISSN (online) 1436-2813
    ISSN 0941-1291
    DOI 10.1007/s00595-023-02749-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Laparoscopic pancreas-preserving duodenectomy: Minimally invasive surgery for superficial nonampullary duodenal epithelial tumors.

    Ito, Sunao / Sagawa, Hiroyuki / Iwasaki, Hiroyasu / Shimura, Takaya / Nakano, Satsuki / Kusudo, Natsuki / Fujita, Kohei / Saito, Masaki / Harata, Shinnosuke / Hayakawa, Shunsuke / Okubo, Tomotaka / Tanaka, Tatsuya / Ogawa, Ryo / Takahashi, Hiroki / Matsuo, Yoichi / Kataoka, Hiromi / Takiguchi, Shuji

    Asian journal of endoscopic surgery

    2023  Volume 17, Issue 1, Page(s) e13247

    Abstract: No consensus exists regarding the optimal treatment for superficial nonampullary duodenal epithelial tumors. Herein, we describe a laparoscopic pancreas-preserving duodenectomy for the treatment of a 30-mm adenoma located in the third portion of the ... ...

    Abstract No consensus exists regarding the optimal treatment for superficial nonampullary duodenal epithelial tumors. Herein, we describe a laparoscopic pancreas-preserving duodenectomy for the treatment of a 30-mm adenoma located in the third portion of the duodenum. The adenoma was located on the pancreatic side, further hindering safe endoscopic resection. Via laparoscopy, the jejunum was transected first. After releasing the third portion of the duodenum from the retroperitoneal space, the jejunum was pulled to the right side of the superior mesenteric artery and separated from the pancreas. Under endoscopic guidance, the duodenum was then transected and duodenojejunostomy performed intracorporeally. Laparoscopic pancreas-preserving duodenectomy can be considered minimally invasive, achieving tumor radicality while preserving organs and causing minimal destruction to the abdominal wall. In conclusion, although technically demanding, laparoscopic pancreas-preserving duodenectomy is a valuable treatment option for superficial nonampullary duodenal epithelial tumors.
    MeSH term(s) Humans ; Duodenum/surgery ; Duodenal Neoplasms/surgery ; Duodenal Neoplasms/pathology ; Pancreas/surgery ; Laparoscopy ; Carcinoma/surgery ; Adenoma/pathology ; Treatment Outcome
    Language English
    Publishing date 2023-10-03
    Publishing country Japan
    Document type Case Reports
    ZDB-ID 2503256-2
    ISSN 1758-5910 ; 1758-5902
    ISSN (online) 1758-5910
    ISSN 1758-5902
    DOI 10.1111/ases.13247
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  9. Article ; Online: ATR inhibitor AZD6738 increases the sensitivity of colorectal cancer cells to 5‑fluorouracil by inhibiting repair of DNA damage.

    Suzuki, Takuya / Hirokawa, Takahisa / Maeda, Anri / Harata, Shinnosuke / Watanabe, Kaori / Yanagita, Takeshi / Ushigome, Hajime / Nakai, Nozomi / Maeda, Yuzo / Shiga, Kazuyoshi / Ogawa, Ryo / Mitsui, Akira / Kimura, Masahiro / Matsuo, Yoichi / Takahashi, Hiroki / Takiguchi, Shuji

    Oncology reports

    2022  Volume 47, Issue 4

    Abstract: The repair of DNA damage caused by chemotherapy in cancer cells occurs mainly at two cell cycle checkpoints ( ... ...

    Abstract The repair of DNA damage caused by chemotherapy in cancer cells occurs mainly at two cell cycle checkpoints (G
    MeSH term(s) Animals ; Ataxia Telangiectasia Mutated Proteins/metabolism ; Cell Line, Tumor ; Colonic Neoplasms/genetics ; Colorectal Neoplasms/drug therapy ; Colorectal Neoplasms/genetics ; DNA Damage ; Fluorouracil/pharmacology ; Humans ; Indoles ; Morpholines ; Pyrimidines ; Sulfonamides
    Chemical Substances Indoles ; Morpholines ; Pyrimidines ; Sulfonamides ; ceralasertib (85RE35306Z) ; ATR protein, human (EC 2.7.11.1) ; Ataxia Telangiectasia Mutated Proteins (EC 2.7.11.1) ; Fluorouracil (U3P01618RT)
    Language English
    Publishing date 2022-02-22
    Publishing country Greece
    Document type Journal Article
    ZDB-ID 1222484-4
    ISSN 1791-2431 ; 1021-335X
    ISSN (online) 1791-2431
    ISSN 1021-335X
    DOI 10.3892/or.2022.8289
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Robot-assisted laparoscopic abdominoperineal resection with en bloc prostatectomy using the Retzius-sparing robot-assisted radical prostatectomy technique.

    Takahashi, Hiroki / Maeda, Anri / Harata, Shinnosuke / Watanabe, Kaori / Yanagita, Takeshi / Suzuki, Takuya / Ushigome, Hajime / Maeda, Yuzo / Shiga, Kazuyoshi / Ogawa, Ryo / Matsuo, Yoichi / Takiguchi, Shuji

    Asian journal of endoscopic surgery

    2022  Volume 15, Issue 3, Page(s) 688–692

    Abstract: Introduction: The best surgical technique for rectal cancer invading the prostate remains controversial. Rectal resection with en bloc prostatectomy using a standard retropubic approach is an option but has disadvantages. We report a new surgical ... ...

    Abstract Introduction: The best surgical technique for rectal cancer invading the prostate remains controversial. Rectal resection with en bloc prostatectomy using a standard retropubic approach is an option but has disadvantages. We report a new surgical procedure applying Retzius-sparing robot-assisted radical prostatectomy.
    Materials and surgical technique: First, the rectum was mobilized mainly at its dorsal side. Next, the prostate was separated from the bladder and urethra via the pouch of Douglas approach without opening the Retzius cavity, after which the surgical specimen was extracted through the perineal wound. Lateral pelvic lymph node dissection was performed after vesicourethral anastomosis.
    Discussion: This new robotic procedure minimizes surgical trauma and preserves normal pelvic anatomy. Furthermore, this approach makes it easy to perform subsequent lateral pelvic lymph node dissection.
    MeSH term(s) Humans ; Laparoscopy/methods ; Male ; Proctectomy ; Prostate/pathology ; Prostate/surgery ; Prostatectomy/methods ; Prostatic Neoplasms/pathology ; Prostatic Neoplasms/surgery ; Robotic Surgical Procedures/methods ; Robotics
    Language English
    Publishing date 2022-03-16
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2503256-2
    ISSN 1758-5910 ; 1758-5902
    ISSN (online) 1758-5910
    ISSN 1758-5902
    DOI 10.1111/ases.13044
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