Ryuhei Aoyama
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View article: Risk of Open Conversion During Robotic Gastrectomy for Gastric Cancer: Optimizing Patient Selection
Risk of Open Conversion During Robotic Gastrectomy for Gastric Cancer: Optimizing Patient Selection Open
Background and Objectives Robotic surgery for gastric adenocarcinoma (GC) shows recovery benefits compared to open and laparoscopic approaches. While open conversion (OC) is associated with poorer outcomes, factors influencing robotic gast…
View article: Mediastinoscopy-Assisted Esophagectomy as an Effective Treatment for IgG4-Related Esophageal Stenosis: A Case Report.
Mediastinoscopy-Assisted Esophagectomy as an Effective Treatment for IgG4-Related Esophageal Stenosis: A Case Report. Open
This case underscores that IgG4-RD should be considered in the differential diagnosis of refractory esophageal stenosis, even with initially inconclusive biopsies. While serum IgG4 measurement has low sensitivity, it is still recommended. …
View article: Clinic Characteristics and Antibiotic Prescribing for Acute Respiratory Infections in Japan
Clinic Characteristics and Antibiotic Prescribing for Acute Respiratory Infections in Japan Open
This cross-sectional study examined clinic characteristics associated with antibiotic prescribing for acute respiratory infections in primary care in Japan.
View article: A Thought-Provoking Case of Successfully Treated Carcinoma of the Head of the Pancreas with Metachronous Lung Metastasis: Impact of Distal Spleno-Renal Shunt for Regional Invasion on Long-Term Period after Pancreaticoduodenectomy
A Thought-Provoking Case of Successfully Treated Carcinoma of the Head of the Pancreas with Metachronous Lung Metastasis: Impact of Distal Spleno-Renal Shunt for Regional Invasion on Long-Term Period after Pancreaticoduodenectomy Open
When performing pancreaticoduodenectomy with resection of the confluence of the superior mesenteric vein and portal vein, division of the splenic vein may cause sinistral portal hypertension resulting in gastrointestinal bleeding, splenic …
View article: Multiple Gastric Carcinomas Associated with Epstein-Barr virus and Helicobacter pylori: A Thought-Provoking Case
Multiple Gastric Carcinomas Associated with Epstein-Barr virus and Helicobacter pylori: A Thought-Provoking Case Open
BACKGROUND Epstein-Barr virus (EBV) and Helicobacter pylori (HP) infections are associated with gastric carcinoma (GC). We present a thought-provoking case of multiple GCs associated with EBV and HP infections. CASE REPORT HP infection was…
View article: Diffuse large B-cell lymphoma in the liver accompanied by primary biliary cholangitis: A rare and difficult-to-diagnose tumor with portal venous thrombosis
Diffuse large B-cell lymphoma in the liver accompanied by primary biliary cholangitis: A rare and difficult-to-diagnose tumor with portal venous thrombosis Open
Our case report provides a timely reminder for clinicians and surgeons in the fields of hepatology and hematology.
View article: Fatal arterial hemorrhage after pancreaticoduodenectomy: How do we simultaneously accomplish complete hemostasis and hepatic arterial flow?
Fatal arterial hemorrhage after pancreaticoduodenectomy: How do we simultaneously accomplish complete hemostasis and hepatic arterial flow? Open
Transcatheter placement of a covered stent may be useful for simultaneous accomplishment of complete hemostasis and HA flow preservation.
View article: Aggressive Resection of Malignant Paraaortic and Pelvic Tumors Accompanied by Arterial Reconstruction with Synthetic Arterial Graft
Aggressive Resection of Malignant Paraaortic and Pelvic Tumors Accompanied by Arterial Reconstruction with Synthetic Arterial Graft Open
BACKGROUND Advanced malignancies in the lower abdomen easily invade the retroperitoneal and pelvic space and often metastasize to the paraaortic and pelvic lymph nodes (LNs), resulting in paraaortic and/or pelvic tumor (PPT). CASE REPORT A…
View article: Adrenocorticotropic hormone-dependent hypercortisolism caused by pancreatic neuroendocrine carcinoma: A thought-provoking but remorseful case of delayed diagnosis
Adrenocorticotropic hormone-dependent hypercortisolism caused by pancreatic neuroendocrine carcinoma: A thought-provoking but remorseful case of delayed diagnosis Open
Detailed investigation, including systematic endocrine examination and functional imaging studies, are important for precise diagnosis of, and appropriate treatment for, NENs.
View article: Acute intestinal infarction caused by initially unexplained splanchnic venous thromboses in a patient with protein C deficiency: A thought-provoking emergency case
Acute intestinal infarction caused by initially unexplained splanchnic venous thromboses in a patient with protein C deficiency: A thought-provoking emergency case Open
We here present a thought-provoking emergency case of AII associated with acute SVT caused by underlying PCD that was successfully treated by two-stage surgery and anticoagulation therapy. This case provides a timely reminder for emergency…
View article: Do liver metastases from gastric cancer contraindicate aggressive surgical resection? A 14-year single-center experience
Do liver metastases from gastric cancer contraindicate aggressive surgical resection? A 14-year single-center experience Open
Our results of LR for LMGC seem acceptable. Additional surgeries for recurrence after the initial LR might prolong OS. Pathological serosal invasion is important for poor prognostic outcomes.
View article: Surgical treatment of gallbladder cancer: An eight-year experience in a single center
Surgical treatment of gallbladder cancer: An eight-year experience in a single center Open
Outcomes for GBC patients remain unacceptable, and improved therapeutic strategies, including neoadjuvant chemotherapy, optimal surgery and adjuvant chemotherapy, should be considered for patients with advanced GBCs.
View article: Metachronous Pancreatic Metastasis from Rectal Cancer that Masqueraded as a Primary Pancreatic Cancer: A Rare and Difficult-to-Diagnose Metastatic Tumor in the Pancreas
Metachronous Pancreatic Metastasis from Rectal Cancer that Masqueraded as a Primary Pancreatic Cancer: A Rare and Difficult-to-Diagnose Metastatic Tumor in the Pancreas Open
BACKGROUND Pancreatic metastasis from colorectal cancer is rare and can masquerade as primary pancreatic cancer. CASE REPORT A 70-year-old male was diagnosed with advanced rectal cancer with multiple liver metastases. After neoadjuvant che…
View article: Impact of continuous local lavage on pancreatic juice-related postoperative complications: Three case reports
Impact of continuous local lavage on pancreatic juice-related postoperative complications: Three case reports Open
CLL has therapeutic potential for postoperative pancreatic fistula.
View article: Treatment of Labial Fistula Communicating with the Duodenal Stump After Gastrectomy
Treatment of Labial Fistula Communicating with the Duodenal Stump After Gastrectomy Open
BACKGROUND Anastomotic failure after gastroenterological surgery is usually treated by intraperitoneal drainage and a mature ductal fistula. A ductal fistula may develop into a labial fistula. Although a ductal fistula is controllable, a l…
View article: Severely Calcified True Aneurysm: A Thought-Provoking Case of Solitary Origin and Postoperative Management
Severely Calcified True Aneurysm: A Thought-Provoking Case of Solitary Origin and Postoperative Management Open
BACKGROUND Visceral arterial aneurysms are rare. Most splenic arterial aneurysms (SAAs) are saccular and are in the distal third of the splenic artery. Suggested major causes of SAAs are atherosclerosis, pregnancy, and inflammation. We rep…
View article: Inferior Pancreaticoduodenal Artery Aneurysm Related with Groove Pancreatitis Persistently Repeated Hemosuccus Pancreaticus Even After Coil Embolization
Inferior Pancreaticoduodenal Artery Aneurysm Related with Groove Pancreatitis Persistently Repeated Hemosuccus Pancreaticus Even After Coil Embolization Open
BACKGROUND Aneurysm of the inferior pancreaticoduodenal artery (IPDA) is rare among visceral artery aneurysms. Aneurysm and/or pancreatitis may have a causal relation with hemosuccus pancreaticus (HP). HP causes an obscure bleeding in the …
View article: Stage IB Gastric Cancer with a Solitary Brain Metastasis 1 Year 9 Months after Total Gastrectomy
Stage IB Gastric Cancer with a Solitary Brain Metastasis 1 Year 9 Months after Total Gastrectomy Open
症例は69歳，男性．検診で異常を指摘され上部消化管内視鏡検査施行したところ，噴門部にtype2胃癌と胃角部に0-IIc胃癌を指摘され，当科で腹腔鏡下胃全摘術，D-2郭清を施行した．病理結果は噴門病変の深達度がT2，胃角病変はT1a，リンパ節転移なくStage IBであった．術後1年9カ月で急激に呂律困難と歩行障害が出現した．精査の結果，左小脳腫瘍を指摘され，腫瘍摘出術および全脳照射を施行した．脳腫瘍の病理診断はadenocarcinomaであり胃癌脳転移と診断したが，全身検…