Masanori Yoshimitsu
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View article: Quality of life after laparoscopic surgery for very low rectal cancer: A sub‐analysis of the ultimate trial
Quality of life after laparoscopic surgery for very low rectal cancer: A sub‐analysis of the ultimate trial Open
Aim Laparoscopic low anterior resection is widely used for treating rectal cancer; however, postoperative complications frequently result in a marked deterioration in the patients' quality of life (QOL). This study aimed to investigate the…
View article: Patient‐Reported Outcomes and Surgical Results of Hand‐Sewn Versus Stapled Anastomosis for Lower Rectal Cancer Located 4–5 cm From the Anal Verge: A Subanalysis of the Ultimate Study
Patient‐Reported Outcomes and Surgical Results of Hand‐Sewn Versus Stapled Anastomosis for Lower Rectal Cancer Located 4–5 cm From the Anal Verge: A Subanalysis of the Ultimate Study Open
Background Preserving anorectal function while achieving oncological success is crucial in the treatment of lower rectal cancer near the anal canal. Despite advancements in laparoscopic surgery that facilitate anal preservation, post‐opera…
View article: A multicentre prospective study of anal function after laparoscopic ultra‐low rectal cancer surgery using a mixed‐effects model
A multicentre prospective study of anal function after laparoscopic ultra‐low rectal cancer surgery using a mixed‐effects model Open
Aim Abdominoperineal resection with permanent colostomy has historically been performed for very low rectal cancer located near the anal canal. Anus‐preserving surgeries, such as intersphincteric resection (ISR) and low anterior resection …
View article: Longitudinal follow‐up of sexual function after surgery for ultra‐low rectal cancers located within 5 cm of the anal verge: A multicentre collaborative study
Longitudinal follow‐up of sexual function after surgery for ultra‐low rectal cancers located within 5 cm of the anal verge: A multicentre collaborative study Open
Aim The effect of laparoscopic surgery on sexual function in patients with ultra‐low rectal cancer remains unexplored. This multicentre study evaluated postoperative sexual function in male patients with rectal cancer located within 5 cm o…
View article: Intraoperative Blood Loss Predicts Local Recurrence After Curative Resection for Stage I–III Colorectal Cancer
Intraoperative Blood Loss Predicts Local Recurrence After Curative Resection for Stage I–III Colorectal Cancer Open
Background To identify the predictors of local recurrence and distant metastasis after radical surgery for stage I–III colorectal cancer. Materials and Methods Patient and tumor characteristics, clinicopathological stages, perioperative fa…
View article: Late anastomotic complication after laparoscopic surgery for clinical stage I low rectal cancers located within 5 cm of the anal verge: Sub‐analysis of the ultimate trial
Late anastomotic complication after laparoscopic surgery for clinical stage I low rectal cancers located within 5 cm of the anal verge: Sub‐analysis of the ultimate trial Open
Background Although extensive research has been conducted on early anastomotic leakage (AL) after sphincter‐sparing surgery, the status of late anastomotic complications (post‐30 days) has received limited attention. These late complicatio…
View article: Laparoscopic repair of gastric conduit obstruction after robot-assisted minimally invasive esophagectomy: a case report
Laparoscopic repair of gastric conduit obstruction after robot-assisted minimally invasive esophagectomy: a case report Open
Background Gastric conduit obstruction (GCO) is a known complication after esophagectomy. Laparoscopic revision surgery for GCO is relatively rare, with limited reports in the literature. Here, we report a case of GCO after robot-assisted …
View article: A 72-Year-Old Diabetic Man with Carcinoma of the Ileocecal Region, Sepsis due to Klebsiella pneumoniae, and Hepatic Portal Venous Gas
A 72-Year-Old Diabetic Man with Carcinoma of the Ileocecal Region, Sepsis due to Klebsiella pneumoniae, and Hepatic Portal Venous Gas Open
BACKGROUND Gas in the portal venous system, or hepatic portal venous gas, is a rare occurrence associated with ischemic colitis, inflammatory bowel disease, or any cause of bowel perforation, including from a necrotic tumor. This report pr…
View article: A Rare Solitary Fibrous Tumor of the Mesorectum: A Case Report
A Rare Solitary Fibrous Tumor of the Mesorectum: A Case Report Open
Solitary fibrous tumors (SFTs) are rare tumors that predominantly occur in the mesorectum. Few case reports have been published on mesorectal tumors, and this is the seventh case report. A 49-year-old female patient presented with a hyperv…
View article: Long-term Survival and Functional Outcomes of Laparoscopic Surgery for Clinical Stage I Ultra-low Rectal Cancers Located Within 5 cm of the Anal Verge
Long-term Survival and Functional Outcomes of Laparoscopic Surgery for Clinical Stage I Ultra-low Rectal Cancers Located Within 5 cm of the Anal Verge Open
Objective: To clarify the long-term oncological outcomes and postoperative anal, urinary, and sexual functions after laparoscopic surgery for clinical stage I very low rectal carcinoma located near the anal canal. Background: Laparoscopic …
View article: Preoperative versus Postoperative chemotherapy with CAPOX plus bevacizumab for resectable colorectal liver metastases: A randomised phase II trial (HiSCO-01)
Preoperative versus Postoperative chemotherapy with CAPOX plus bevacizumab for resectable colorectal liver metastases: A randomised phase II trial (HiSCO-01) Open
Background NCCN and ESMO guidelines recommend 6 months of perioperative oxaliplatin-based chemotherapy for patients with resectable colorectal liver metastases (CRLM). However, the optimal sequencing and chemotherapy regimen remain unclear…
View article: Clinical Phase I Study of TAS102/Irinotecan/Bevacizumab Combination Therapy in Japanese Patients With Unresectable Metastatic Colorectal Cancer (mCRC)
Clinical Phase I Study of TAS102/Irinotecan/Bevacizumab Combination Therapy in Japanese Patients With Unresectable Metastatic Colorectal Cancer (mCRC) Open
The TAS-102/irinotecan/bevacizumab combination therapy was safe, effective, and well-tolerated in patients previously treated with mCRC.
View article: Author response to: Comment on: Non-invasive measurement of intestinal tissue oxygen saturation for evaluation of reconstructed blood flow in rectal cancer surgery: HiSCO-09 study
Author response to: Comment on: Non-invasive measurement of intestinal tissue oxygen saturation for evaluation of reconstructed blood flow in rectal cancer surgery: HiSCO-09 study Open
Extended lymph node dissection for rectal cancer, is it still under debate
View article: Stomal Prolapse Due to Sidedness of Transverse Loop Colostomy: A Retrospective Cohort Study
Stomal Prolapse Due to Sidedness of Transverse Loop Colostomy: A Retrospective Cohort Study Open
In this study, multivariate analysis showed that the right side of the transverse colon was a risk factor for SP. Therefore, when constructing a transverse colon loop stoma, the stoma should be constructed in the left transverse colon to p…
View article: Survival outcomes of patients with stage III colorectal cancer aged ≥80 years who underwent curative resection: The HiSCO-04 prospective cohort study
Survival outcomes of patients with stage III colorectal cancer aged ≥80 years who underwent curative resection: The HiSCO-04 prospective cohort study Open
Background The efficacy of adjuvant chemotherapy in elderly patients aged ≥ 80 years with stage III colorectal cancer (CRC) who have undergone curative resection remains unclear. In parallel with a multicenter prospective phase II trial ev…
View article: Successful resection of rectal cancer and perirectal abscess following systemic chemotherapy and chemoradiotherapy: A case report
Successful resection of rectal cancer and perirectal abscess following systemic chemotherapy and chemoradiotherapy: A case report Open
View article: A Case of Foreign Body Granuloma Due to the Presence of a Silk Surgical Thread after Resection of Local Recurrence of Descending Colon Cancer
A Case of Foreign Body Granuloma Due to the Presence of a Silk Surgical Thread after Resection of Local Recurrence of Descending Colon Cancer Open
症例は65歳の女性で，下行結腸癌（pT3pN0M0，pStage II：大腸癌取扱い規約第8版）に対し腹腔鏡下結腸左半切除術を施行した．術後22か月目にCEA 10.1 mg/mlの上昇，FDG-PET/CTで吻合部近傍にSUVmax 5.5の異常集積を伴う腫瘤を認めた．下行結腸癌術後局所再発と診断し開腹結腸部分切除術を施行した．病理所見は管状腺癌の浸潤性増殖で大腸癌局所再発であった．再発手術後12か月目の造影CTで吻合部近傍に腫瘤を認め，FDG-PET/CTでSUVmax…
View article: Single-incision laparoscopic ileocolectomy for solitary cecal colon diverticulitis with calcified fecalith: a case report
Single-incision laparoscopic ileocolectomy for solitary cecal colon diverticulitis with calcified fecalith: a case report Open
The prevalence of colonic diverticular disease has been on the increase in Japan due to an increase in westernized diet and a rapidly aging population. However, solitary cecal diverticulum is rare and considered congenital in etiology. Sol…
View article: Precise diagnosis of acute mesenteric ischemia using indocyanine green imaging prevents small bowel resection: A case report
Precise diagnosis of acute mesenteric ischemia using indocyanine green imaging prevents small bowel resection: A case report Open
View article: Giant esophageal liposarcoma with squamous cell carcinoma resected via the cervical approach: a case report
Giant esophageal liposarcoma with squamous cell carcinoma resected via the cervical approach: a case report Open
View article: Mesenteric desmoid tumor after robot-assisted laparoscopic cystectomy with bladder replacement: a case report
Mesenteric desmoid tumor after robot-assisted laparoscopic cystectomy with bladder replacement: a case report Open
Desmoid tumors are a very rare disease associated with familial adenomatous polyposis, surgical trauma and hormonal factors. Surgical trauma is a critical trigger for sporadic desmoid tumors. Tumor development has been reported, and laparo…
View article: Preoperative endoscopic tattoo marking improves lymph node retrieval in laparoscopic rectal resection: a retrospective cohort study
Preoperative endoscopic tattoo marking improves lymph node retrieval in laparoscopic rectal resection: a retrospective cohort study Open
Purpose: Harvesting at least 12 lymph nodes (LNs) is recommended for adequate tumor staging in colon surgery. Although preoperative endoscopic tattooing has been used for primary localization of tumors, its impact on LN retrieval in colore…
View article: Cutaneous metastasis of cecum cancer with MSI-high and BRAFV600E mutation: a case report
Cutaneous metastasis of cecum cancer with MSI-high and BRAFV600E mutation: a case report Open
View article: Rare Contents of an Internal Hernia through a Defect of the Broad Ligament of the Uterus
Rare Contents of an Internal Hernia through a Defect of the Broad Ligament of the Uterus Open
Herniation through a defect of the uterine broad ligament is a rare internal hernia that is difficult to diagnose definitively. Common hernia contents contain ileal loops. Herein, we report a rare case of internal herniation of both the il…
View article: Radical surgery for anal canal neuroendocrine carcinoma with pagetoid spread: a case report
Radical surgery for anal canal neuroendocrine carcinoma with pagetoid spread: a case report Open
Anal canal neuroendocrine carcinoma (NEC) with pagetoid spread (PS) is a rare disease, and its treatment strategy remains unclear. The prognosis of anal canal NEC with PS is poor. Resection margin status is very important for anorectal car…
View article: Successful Use of Negative Pressure Wound Therapy for Abdominal Wall Necrosis Caused by a Perforated Ascending Colon Using the ABThera System
Successful Use of Negative Pressure Wound Therapy for Abdominal Wall Necrosis Caused by a Perforated Ascending Colon Using the ABThera System Open
Background . The practice of leaving the abdomen open after an emergency laparotomy has gained increasing popularity recently. Negative pressure wound therapy (NPWT) is known as an effective technique in the management of an open abdomen (…
View article: Gluteal-fold flap repair of rectovaginal fistula caused by aluminum potassium sulfate hydrate-tannic acid injection for internal hemorrhoids: a case report
Gluteal-fold flap repair of rectovaginal fistula caused by aluminum potassium sulfate hydrate-tannic acid injection for internal hemorrhoids: a case report Open
View article: Characteristic findings of appendicular endometriosis treated with single incision laparoscopic ileocolectomy: Case report
Characteristic findings of appendicular endometriosis treated with single incision laparoscopic ileocolectomy: Case report Open
Appendicular endometriosis can present as a submucosal tumor in the cecum without any abdominal symptoms. Appendicular endometriosis should be considered in the differential diagnosis of ileocecal submucosal tumor. Single-incision laparosc…
View article: Adult Intussusception Due to Endometriosis Arising from the Uterine Tube: Report of a Case
Adult Intussusception Due to Endometriosis Arising from the Uterine Tube: Report of a Case Open
Introduction: Endometriosis is a rare cause of intussusceptions in adults. Although intestinal endometriosis sometimes arises as a consequence of direct involvement of the pelvic organs with endometrial tissue, there is no report that this…
View article: A Case of Adhasive Bowel Obstruction with Advanced Kyphosis where Exploratory Laparoscopy and Abdominal Wall Reconstruction were Useful
A Case of Adhasive Bowel Obstruction with Advanced Kyphosis where Exploratory Laparoscopy and Abdominal Wall Reconstruction were Useful Open
症例は69歳，女性．40代に，臍ヘルニアに対してメッシュ挿入によるヘルニア修復術を受けた．2014年頃より，単純性腸閉塞にて短期間に入退院を繰り返したため手術適応と判断した．CT所見からは腹壁への小腸の癒着が原因と考えられたが，元来の高度脊柱後弯やヘルニア手術歴のため，術前検査だけでは皮切や修復方法の詳細な計画が困難であった．そこで診断的腹腔鏡検査を施行したところ，腹壁は気腹下でも亀背およびメッシュの影響で背側へV字状に屈曲し腸間膜と近接していた．また，その間隙に挟まれるよ…