Takuya Kosumi

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Volvulus of the gallbladder has been reported mostly in elderly women and is rarely reported in children. In this paper, we report a recent case of successful detorsion and removal of the gallbladder via minimal access surgery, which was diagnosed as gallbladder volvulus preoperatively by means of magnetic resonance imaging (MRI). An 11-year-old boy(More)
We describe our new technique for laparoscopic herniorrhaphy with subumbilical single-site access to treat inguinal hernias in children. First, we inserted a transparent 3-mm trocar and a 2-mm minitrocar at the umbilicus. We then inserted a 3-mm 45° camera through the 3-mm trocar and needle-grasping forceps through the 2-mm trocar. We closed the hernia(More)
Electrolyzed strong acid water (ESAW) is generated by the electrolysis of a weak sodium chloride solution. Although ESAW is known to have a strong bactericidal activity and to be harmless to the living body, its effectiveness and safety in the treatment of perforated peritonitis has not been well established. Male Wistar rats were used for the study. Three(More)
A 3-year-old boy had pancreatoblastoma arising in the pancreatic head and body, with metastasis in the mesenteric lymph nodes, tumor thrombus in the portal vein, and a small metastatic lesion in the left lung. After preoperative chemotherapy, aggressive surgical treatment including resection and reconstruction of the portal and superior mesenteric veins was(More)
The authors describe a rare case of handlebar hernia in a 9-year-old-boy. All layers of his abdominal wall were disrupted by a fall on a bicycle; however, his skin and intra-abdominal organs were completely intact. Computed tomography demonstrated subcutaneous intestinal loops protruding through the rent. Surgical repair was performed, and his postoperative(More)
A 4-year-and-3-month-old boy with funnel chest underwent the Nuss procedure. He had an uneventful intraoperative and postoperative course, and was discharged on the tenth day of hospitalization. He developed chest pain while playing on the 29th day after surgery, and was diagnosed with right hemothorax. He was followed conservatively and the hemothorax(More)
A 2-year 9-month-old girl with a large mass in the right chest underwent middle and inferior lobectomy, after which the mass was pathologically diagnosed as a pleuropulmonary blastoma (PPB). The clinical, radiographic, and pathologic findings were typical. Three courses of postoperative chemotherapy with 2 different regimens were ineffective in preventing(More)
In temperate climates, the initiation and termination of diapause synchronize the stress-tolerant stage with the stressful season and reproduction with the non-stressful season in many insects. Synchronization is often regulated by photoperiodism. Voltinism and the ultimate size of adults are also important determinants for their lifecycle, and different(More)