Vascular responses to abrupt blood flow change after bypass surgery for complex intracranial aneurysms.

Background: Bypass surgery for complex intracranial aneurysms (IAs) results in drastic blood flow changes in intracranial arteries. The aim of the study was to elucidate how vessels adapt to blood flow changes after bypass surgery with phase-contrast magnetic resonance imaging (PC-MRI).

Methods: This is a prospective observational study to assess changes of the blood flow in intracranial arteries after bypass surgery for IAs.

Totally Laparoscopic Resection for Low Sigmoid and Rectal Cancer Using Natural Orifice Specimen Extraction Techniques.

Background: A minilaparotomy for specimen extraction during laparoscopy occasionally results in postoperative wound complications. We have performed a totally laparoscopic resection for early colorectal cancer using the natural orifice specimen extraction technique.

Methods: From 2008 to 2013, we have performed a totally laparoscopic resection for clinical stage I and IIA low sigmoid colon and rectal cancers.

Early Effects of Sleeve Gastrectomy on Obesity-Related Cytokines and Bile Acid Metabolism in Morbidly Obese Japanese Patients.

Background: Laparoscopic sleeve gastrectomy (LSG) has wide-ranging positive effects on adipocytokine metabolism, bile acid profile, and chronic low-grade inflammation related to obesity. However, the early temporal changes in these markers following LSG have not been well investigated. This study aimed to evaluate the early effects of LSG on adipocytokines, bile acid profile, and inflammatory markers.

[A case of rapidly progressing treatment-resistant colorectal neuroendocrine carcinoma].

We performed primary lesion resection in a 48-year-old man diagnosed with sigmoid colon cancer showing multiple liver metastases and extensive lymph node metastases. Endocrine cell carcinoma was diagnosed from an excised specimen. In the early postoperative period, orbital metastases and thoracic spine metastasis were detected, while the multiple liver metastases and lymph node metastases worsened markedly.

A new simple navigation for anatomic liver resection under intraoperative real-time ultrasound guidance.

Anatomic liver resection is indispensable for liver surgeons. However, recognition of the precise intrahepatic resectional plane is difficult because intrahepatic Glissonean branches cannot be visualized. We have devised a new surgical procedure to accurately determine the resectional plane of deep parts of the liver.