Publications by authors named "Takashi Marusasa"

Aim: To determine if follow-up by consultant pediatric surgeons (CPS) affects morbidity due to incarceration (INC) in children with indirect inguinal hernia (IH).

Methods: We educate parents so they can identify possible INC and advise them to attend our emergency department anytime for immediate review by on-call CPS.

Results: We reviewed 3,493 cases of IH by grouping them according to age at diagnosis: neonatal (G1; n = 96), 2-3 months (G2; n = 331), 4-6 months (G3; n = 118), 7-12 months (G4; n = 193), and over 12 months (G5; n = 2,755).

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We previously reported the 5-fluorouracil (5-FU) sensitivity of cancer cells obtained from colorectal cancer (CRC) patients using the collagen gel droplet-embedded culture-drug sensitivity test (CD-DST). Multiple drug concentrations and contact durations, and the area under the concentration curve (AUC) and growth inhibition rate (IR) were combined, resulting in the AUC-IR curve, which was approximated to the logarithmic curve. Moreover, the individualized AUC(IR50), the AUC value which gives 50% growth inhibition, was calculated using the AUC-IR curve.

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Purpose: Reports on laparoscopic treatment (LT) of peritonitis secondary to perforated appendicitis (PA) in children often include localized peritonitis/appendiceal mass, without specifically referring to pan-peritonitis (PP). This study compared LT with open treatment (OT) in only those patients with PP secondary to PA.

Methods: PP was defined as generalized abdominal rigidity on presentation with purulent material intraoperatively found throughout the entire abdominal cavity.

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The purpose of this study was to determine the effect of the addition of oxaliplatin (l-OHP) or irinotecan (SN-38) to 5-fluorouracil (5-FU) using the collagen gel droplet embedded culture-drug sensitivity test (CD-DST) to establish whether leucovorin plus 5-FU should be administered in combination with l-OHP (FOLFOX) or SN-38 (FOLFIRI) in individualized first-line chemotherapy for the treatment of advanced colorectal cancer (CRC). Specimens of primary tumors were obtained from 24 CRC patients who had received no preoperative chemotherapy. CD-DST was performed, and the inhibition rate (IR) was obtained under multiple incubation conditions.

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The efficiency of new anti-cancer drugs such as the S-1 system was demonstrated in a controlled study comparing treatment and non-treatment groups. We encountered a patient with gastric cancer demonstrating peritoneal dissemination, who was successfully treated by combination therapy using S-1 and docetaxel. A 62-year-old woman was admitted to the hospital due to appetite loss and nausea.

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We have previously reported the 5-fluorouracil (5-FU) sensitivity of cancer cells from colorectal cancer (CRC) patients using the collagen gel droplet embedded culture-drug sensitivity test (CD-DST) under multiple drug concentrations and contact durations. Moreover, the area under the concentration curve (AUC) and growth inhibition rate (IR) were combined, resulting in the AUC-IR curve, which was approximated to the logarithmic curve. In the present study, we used the AUC-IR curve to calculate the individualized AUCIR50, the AUC value that imparts 50% growth inhibition.

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Objective: To examine whether Lapprotector, a protective film and ring device for protecting wounds, can prevent wound infection after open appendectomy.

Methods: We performed open appendectomy on 64 patients between 2004 and 2006. In September 2005, we started using Lapprotector to protect the site of incision (McBurney's point).

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Purpose: The management of appendiceal masses (AM) in children remains controversial. In this study, we evaluated primary laparoscopic drainage (PLD) for efficacy.

Methods: Eleven (11) consecutive cases of AM (mean age, 8.

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Purpose: The aim of this study is to investigate the optimal treatment for lymphangioma in children by analyzing the effectiveness and complications of treatment modalities.

Methods: We reviewed 128 patients with lymphangioma treated at our institution between 1979 and 2005. Periods of treatment were divided arbitrarily into 2 groups: period I, from 1979 to 1988 (n = 53); and period II, from 1989 to 2005 (n = 75).

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