Publications by authors named "Koji Fukumoto"

In prospective Japanese studies of pediatric renal tumors, 5-year event-free survival and overall survival (OS) for patients with nephroblastoma ranges from 75-90% and 89-97%, respectively. However, treatments strategies for recurrent nephroblastoma in Japanese patients remain unclear. This retrospective study aimed to inform the development of treatment strategies by analyzing the long-term results and side effects of salvage therapies for recurrent nephroblastoma in Japan.

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Background: Pediatric pancreatic tumors are rare and account for < 0.1% of all childhood cancers. The primary treatment for pancreatic tumors is surgical resection.

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Purpose: Recurrence and contralateral metachronous inguinal hernia (CMIH) are important postoperative complications in patients with inguinal hernia (IH) who undergo laparoscopic percutaneous extraperitoneal closure (LPEC). This study aimed to evaluate the incidence and causes of recurrence and CMIH after LPEC.

Methods: Among the included patients, 2484 hernias were included in the analysis of recurrence.

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Background: Supine hypotension syndrome (SHS) has been reported to occur due to compression by a giant tumor such as ovarian tumor. We herein report a case of retroperitoneal ganglioneuroma with SHS treated with laparoscopic resection.

Case Presentation: The patient was an 11-year-old male with right-sided abdominal pain.

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Article Synopsis
  • Congenital tracheal stenosis is a serious disorder caused by a narrow tracheal ring that lacks smooth muscle, but its genetic basis is not well understood.
  • Researchers conducted whole exome sequencing on a patient with this condition and found a new harmful variant in the TBX5 gene that affects protein stability and activity.
  • The study's findings, along with observations in mice, suggest that TBX5 variants play a significant role in the development of congenital tracheal stenosis.
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Purpose: In the event of failed tracheostomy decannulation, patients might have a tragic course of events. We retrospectively evaluated our stepwise tracheostomy decannulation program and examined its safety.

Methods: A 12-year retrospective study of pediatric patients was conducted.

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Background: Bronchopulmonary foregut malformation (BPFM) is a rare congenital anomaly characterized by a fistula between an isolated portion of respiratory tissue and the esophagus or stomach. Srikanth et al. reported that BPFMs can be categorized into four groups, and that an unclassified BPFM is extremely rare.

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Background: Higher risk of recurrence has been reported in pediatric inguinal hernia patients with specific comorbidities. The purpose of this systematic review was to investigate which comorbidities predispose to recurrent pediatric inguinal hernias (RPIHs).

Methods: A comprehensive search of six databases was performed, reviewing the literature to date on RPIHs and the co-occurrence of comorbidities.

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Article Synopsis
  • Laryngotracheoesophageal cleft (LTEC) is a rare congenital condition where the larynx and trachea are abnormally connected behind the esophagus, often linked with other gastrointestinal issues.
  • A case was reported where a male fetus had a gastric polypoid lesion detected via ultrasound, leading to frequent vomiting and respiratory problems after birth.
  • After examinations revealed LTEC type III, a partial gastrectomy showed that the tumor had characteristics similar to bronchial tissue, suggesting the gastric tissue abnormalities may stem from the same developmental issues causing LTEC.
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Aim: During choledochal cyst (CC) excision, the hepaticojejunostomy anastomosis (HJA) can be performed conventionally (CHJA) or with a Carrel patch (CPA). CPA can increase CHD diameter to 10-13 mm, preventing anastomotic stenosis and intrahepatic bile duct (IHBD) stones but may be at risk for malignant transformation.

Methods: The medical records of 83 cystic-type CC with CHD ≤ 9 mm followed up for at least 20 years were reviewed retrospectively.

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Aim: To assess mid-/long-term postoperative quality of life (QOL) of esophageal atresia (EA) patients.

Methods: Modified gastrointestinal quality-of-life index surveys were administered to postoperative EA patients who were at least 7 years old at evaluation to assess three topics about general lifestyle (GL), five topics about EA, and four topics about mental health (MH). For MH, caregivers were also interviewed, but separately.

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Aim: To assess mid-/long-term quality of life (QOL) of total colonic aganglionosis (TCA) patients.

Methods: Modified pre-existing QOL assessment tools for general lifestyle (GL), bowel function (BF), and mental health (MH) were administered to postoperative TCA patients from five institutions, who were at least 7 years old to compare Duhamel (with pouch) and Swenson/Soave (without pouch) techniques between children (Ch 7-12 years old), teenagers (Tn 13-19), and adults (Ad 20 and over). For MH, caregivers were also interviewed, but separately.

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Purpose: Pancreaticobiliary maljunction (PBM) without biliary dilatation is a condition in which dilatation of the bile duct is not seen in patients with PBM. Recently, the Japanese Study Group on Pancreaticobiliary Maljunction (JSGPM) published new diagnostic criteria for PBM. In these criteria, biliary dilatation is defined according to the standard diameter at each age.

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Foreign body aspiration (FBA), with potentially life-threatening outcomes, is not unusual in the pediatric population. We report two cases of lobar bronchial radiolucent foreign bodies. Chest X-ray (CXR) showed a slight but significant finding of lobar emphysema without a significant mediastinal shift.

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A fecaloma is a mass of accumulated feces with a consistency much harder than that of a fecal impaction. It is most frequently observed in the rectum and sigmoid area, and associated complications include colonic obstruction, ulceration, bleeding, and perforation. A one-year-old, previously healthy boy with no history of chronic constipation was admitted because of vomiting and abdominal distension.

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Purpose: In postoperative cases of fundoplication, the gastric emptying ability is promoted and sometimes exhibits dumping syndrome. Dumping syndrome often goes unrecognized in children. Furthermore, the risk factors for postoperative dumping syndrome are unknown.

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Constant neck flexion has been considered crucial to reducing anastomotic tension after tracheal resection. However, in rare cases, anteflexion can cause cervical cord damage, leading to acute neurological disorders such as tetraplegia. Here, we report a case of 5-year-old boy presenting with acute neurological disorder triggered by a chin-to-chest position over 4 days of deep sedation after cricotracheal resection.

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