Masakazu Maruyama

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We conducted a case-control study to examine the association ofHelicobacter pylori infection as a risk factor in gastric cancer in the Japanese population. Serum IgG antibodies forHelicobacter pylori were determined in 55 consecutive patients with gastric cancer and in 75 age- and sex-matched mass survey subjects and 57 age- and sex-matched cancer-free(More)
The possibility of radiographically diagnosing carcinoma with submucosal involvement (invasive carcinoma) is discussed based on 119 invasive carcinomas of the large bowel that had been treated surgically and colonoscopically over a period of 9 years (1989—1997) at the Cancer Institute Hospital in Tokyo. Of these lesions, 38 were superficial-type invasive(More)
BACKGROUND The purpose of this study was to evaluate the capacity of detection (detectability), by radiographic examination, of minute gastric cancer that was indicated for endoscopic mucosal resection (EMR). METHODS Fifty-five lesions in 55 patients with minute gastric cancer were endoscopically resected between 1992 and 2000 at the Foundation for(More)
Many neuropsychological studies have shown that the Digit Symbol Test (DST) of the Wechsler Adult Intelligence Scale (WAIS) is useful for screening for dysfunctions of the brain. However, it remains unclear which brain areas are actually involved in the performance of DST and what brain functions are used for executing this test. In this study, we examined(More)
marized recent reports of laparoscopy-assisted gastrectomy (LAG) in Japan. Of 104 patients with gastric cancer who underwent LAG since 1997, 57 were treated by his group. They reported that D2 lymphadenectomy was technically possible in LAG, but D1 dissection was recommended from the viewpoint of minimally invasive surgery. M. Hiratsuka, Osaka Medical(More)
  • M Maruyama
  • The Journal of bone and joint surgery. British…
  • 1995
A clay containing hydroxyapatite (HA) was developed for use as a filling material between an uncemented implant and bone. It consists of 55% HA granules greater than 0.1 mm in size with a homogeneous pore distribution and a porosity of 35% to 48% in a saline solution of sodium alginate (6%). Ti-6A1-4V alloy rods with smooth surfaces were implanted into the(More)
One hundred and thirty four patients with hepatocellular carcinoma was admitted to our clinic for the past 8 years. 109 cases of them was associated with liver cirrhosis. 87 cases had surgical treatment including 62 hepatic resection, but only 19 (30.6%) was curative resections. Many cases were intractable because of their far advanced spreading or severely(More)
BACKGROUND A high response rate has been reported for chemotherapy combining irinotecan (CPT-11) and cisplatin (CDDP) against advanced gastric cancer. The strong anti-tumor activity of this regimen makes it very attractive as a preoperative chemotherapy. We conducted a preliminary study on preoperative chemotherapy with this regimen in patients with(More)
Hepatic encephalopathy tha t associated wi th hepatic disease such as f luminating hepatitis, has a high mor ta l i ty ra te and multiple methods of therapy has been t r ied in vain. Trey et al. reported 7 pat ients wi th hepatic coma due to acute hepati t is who had a recovery consciousness a f te r exchange t ransfus ion. After his report same method of(More)