Mampei Kawashima

ORCID: 0000-0001-7306-728X
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About
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Research Areas
  • Liver Disease Diagnosis and Treatment
  • Liver Disease and Transplantation
  • Pancreatic and Hepatic Oncology Research
  • Abdominal Trauma and Injuries
  • Organ Transplantation Techniques and Outcomes
  • Gallbladder and Bile Duct Disorders
  • Hepatocellular Carcinoma Treatment and Prognosis
  • Intestinal Malrotation and Obstruction Disorders
  • Soft tissue tumor case studies
  • Genetic factors in colorectal cancer
  • Gastrointestinal disorders and treatments
  • Esophageal and GI Pathology
  • Neuroendocrine Tumor Research Advances
  • Hernia repair and management
  • Inflammatory Biomarkers in Disease Prognosis
  • Medical Imaging Techniques and Applications
  • Advanced Radiotherapy Techniques
  • Pediatric Hepatobiliary Diseases and Treatments
  • Diverticular Disease and Complications
  • Renal cell carcinoma treatment
  • Cancer Genomics and Diagnostics
  • Congenital gastrointestinal and neural anomalies
  • Colorectal Cancer Surgical Treatments
  • Myeloproliferative Neoplasms: Diagnosis and Treatment
  • Colorectal Cancer Treatments and Studies

Nippon Medical School
2019-2025

Chiba Hokusou Hospital
2023-2024

Nippon Medical School Hospital
2022

ABSTRACT For patients with resectable colorectal liver metastases (CRLM), the efficacy of adjuvant chemotherapy remains a subject debate. Several studies have concluded that postoperative circulating tumor DNA (ctDNA) is marker minimal residual disease (MRD) and useful prognostic factor in nonmetastatic cancer. However, few explored its application cases involving metastases. This was an observational study included CRLM who underwent primary resection. By examining targeted sequencing 50...

10.1111/cas.16442 article EN cc-by-nc Cancer Science 2025-03-10

A Japanese man in his 20s was referred to our hospital with a two-month history of abdominal fullness and leg edema. Abdominal computed tomography revealing massive ascites ostial blockage the main hepatic veins, angiographic evaluation demonstrating obstruction veins yielded diagnosis Budd-Chiari syndrome (BCS). Diuretic agents were prescribed for but failed provide relief. The patient department further treatment. Angiography showed most portal flow draining from an inferior right vein...

10.1272/jnms.jnms.2023_90-603 article EN Journal of Nippon Medical School 2023-06-01

The preoperative diagnosis of cecal volvulus (CV) is rare and difficult emergent laparotomy frequently performed. Here, we report a case CV that was diagnosed by computed tomography in patient with an intellectual disability. In addition, demonstrate elective laparoscopic cecopexy can be performed following conservative treatment, such as the use ileus tube per anus.

10.1272/jnms.jnms.2019_86-308 article EN Journal of Nippon Medical School 2019-06-26

Objective The spleen is part of the lymphatic system and one least understood organs human body. It involved in production blood cells helps filter blood, remove old cells, fight infection. Partial splenic artery embolization (PSE) widely used to treat pancytopenia portal hypertension. efficacy PSE for improving thrombocytopenia has been well demonstrated. In this study, we evaluated infarction ratio platelet increase after PSE. Methods Forty-five consecutive patients underwent from January...

10.1177/03000605231190967 article EN cc-by-nc Journal of International Medical Research 2023-08-01

Extrahepatic portal vein obstruction (EHPVO) is a very rare disease-causing hypertension. Myeloproliferative neoplasm (MPN) including essential thrombocythemia (ET) reported as risk factor for EHPVO due to underlying persistent thrombophilia.A Japanese woman in her 40s was referred our hospital with one-month history of gastric variceal bleeding EHPVO. Laboratory investigation demonstrated thrombocytosis despite She had mutation clonal marker JAK2V617F EHPVO, which prompted us consult...

10.1272/jnms.jnms.2024_91-601 article EN Journal of Nippon Medical School 2023-01-01

Various energy devices are available for resection of the liver parenchyma during laparoscopic (LLR). We have historically performed resections using Cavitron Ultrasonic Surgical Aspirator (CUSA). More recently, we used new bipolar forceps (BiSect; Erbe Elektromedizin GmbH, Tübingen, Germany) to perform clamp-crush dissection with good results. The BiSect is a reusable dissecting tip and both an incision mode coagulation mode. evaluated perioperative clinical course patients who underwent...

10.1272/jnms.jnms.2024_91-112 article EN Journal of Nippon Medical School 2023-12-07

We report a case of metastatic pancreatic-head mucinous carcinoma (with multiple lymph node and bone metastases) review the relevant literature. Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) was useful for diagnosis, satisfactory outcome achieved after systemic chemotherapy with FOLFIRINOX followed by resection primary lesion as conversion surgery. The patient 55-year-old man. Hematological findings included elevated serum tumor marker levels: CEA 12.7 ng/mL, DUPAN-2 400...

10.1272/jnms.jnms.2019_86-502 article EN Journal of Nippon Medical School 2019-05-16

Abstract Background In Japan, primary hepatocellular carcinoma (HCC) often develops against a background of chronic hepatitis, such as persistent hepatitis B virus (HBV) or C (HCV) infection. Patients with HCC are commonly in their 50s 60s. It is extremely rare to find patients 40s younger. cases reported constitute only 0.23% all cases. The adolescent and young adult (AYA) population refers people aged 15–39 years. cancer the AYA may present special clinical features biologic...

10.21203/rs.3.rs-3947780/v1 preprint EN cc-by Research Square (Research Square) 2024-02-28

症例は79歳,男性.発熱,黄疸を認め当院受診,膵頭部腫瘤と胆管閉塞による急性胆管炎の診断となり入院となった.膵頭部癌の診断となり,減黄処置後に膵頭十二指腸切除が行われた.病理所見では核分裂像を伴う強核異型の腫瘍細胞が充実性に増生し,一部で偽乳頭状構造の形成を認めた.免疫染色検査では,β-cateninの核内陽性像を認め,CD10,vimentinは陽性,Ki-67が80%であり診断はmalignant solid pseudopapillary neoplasm(SPN)となった.術後2ヶ月目に肝内多発転移が出現し,徐々に全身状態の低下を認め3ヶ月目に死亡した.膵SPNは若年女性に好発する低悪性膵腫瘍であり,悪性転化を認めるSPNの報告は稀である.急激な転機を辿っており,非常に悪性度の高い症例と考えられた.

10.2958/suizo.39.361 article JA Suizo 2024-12-26

A 64-year-old woman was admitted to hospital with persistent abdominal pain. She had been hospitalized similar symptoms on five occasions during a period of 2 years. Computed tomography revealed dilatation and fecal impaction from the ileum transverse colon. barium enema simultaneous ileus tube radiography showed narrow segment descending-sigmoid Colonoscopy no mucosal change. Her did not improve conservative therapy, so descending sigmoid colectomy performed. Histologic examination...

10.1272/jnms.jnms.2021_88-413 article EN Journal of Nippon Medical School 2020-11-29

Endoscopic retrograde cholangiopancreatography (ERCP) is essential for diagnosing and treating biliopancreatic disease. Because ERCP-related perforation can result in death, therapeutic decisions are important. The aim of this study was to determine the cause suggest appropriate management.Between January 1999 August 2022, 7,896 ERCPs were performed our hospital. We experienced 15 cases (0.18%) conducted a retrospective review.Of patients, 6 female 9 male, mean age 77.1 years. According...

10.1272/jnms.jnms.2023_90-305 article EN Journal of Nippon Medical School 2023-06-01

The spleen is a lymphatic organ that manages immune surveillance of the blood, produces blood cells, and helps filter remove old fight infection. normal splenic weight approximately 65-265 g. This study evaluated volume segmental volume.

10.1272/jnms.jnms.2024_91-108 article EN Journal of Nippon Medical School 2023-12-07

A 70-year-old man was admitted to our hospital with sudden hematochezia and an elastic, soft, reddish tumor measuring 40 mm in diameter prolapsed through the anus. The manually repositioned, subsequent computed colonography revealed it be a villous located sigmoid colon; diagnosed as tubulovillous adenoma on biopsy. After patient underwent bowel rest, elective laparoscopic resection performed. postoperative course uneventful, discharged 12 days after surgery. In this patient, manual...

10.1272/manms.18.105 article EN Nihon Ika Daigaku Igakkai Zasshi 2022-02-20

症例は85歳の女性で,局所進行膵頭部癌(上腸間膜動脈,門脈浸潤)に対し,化学放射線療法後に亜全胃温存膵頭十二指腸切除術,門脈合併切除再建術を施行した.術後経過は良好であったが3か月目に下血と貧血を認めた.CTで肝外門脈閉塞(extrahepatic portal vein obstruction;以下,EHOと略記)と肝管空腸吻合部周囲に増生した側副血行路を認めた.ダブルバルーン小腸内視鏡検査で静脈瘤を肝管空腸吻合部に認め,同部からの出血と診断した.門脈圧減圧による出血予防を目的に部分的脾動脈塞栓術(partial splenic embolization;以下,PSEと略記)を施行した.その後は出血を認めていない.EHOにより生じる異所性静脈瘤出血は診断・治療の困難な致命的な合併症であるが治療法は確立していない.PSEは肝管空腸吻合部静脈瘤出血に対し一考すべき治療法である.

10.5833/jjgs.2020.0049 article JA The Japanese Journal of Gastroenterological Surgery 2021-08-01
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