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1.  Hepatoblastoma: 15-year experience and role of surgical treatment 
Purpose
Hepatoblastoma is the most common malignant liver tumor in children. The aim of this study was to review our results of hepatoblastoma treatment and to determine the role of surgical treatment in hepatoblastoma.
Methods
This is a retrospective clinical study. The medical records of patients with hepatoblastoma, treated between October 1994 and October 2009, were reviewed. The patients were classified according to the pretreatment extent of disease (PRETEXT) grouping system. The main outcome variable was survival. Secondary outcome variables were complete, partial and no response to chemotherapy and surgery, when indicated.
Results
Twenty-seven patients were treated during the observation period. Eighteen were males. Five were PRETEXT group I, 8 group II, 13 group III and 1 group IV. Complete excision was achieved in all patients except in one case that underwent liver transplantation (group IV). Median follow-up and survival rate were 2.3 years and 100%, 6.6 years and 75%, 5.8 years and 92%, 7.7 years and 100%, for groups I to IV, respectively. Twenty patients are currently considered to be in complete response status and three patients are receiving postoperative chemotherapy. Four patients died; the causes of death were cytomegalovirus hepatitis, bone marrow suppression during adjuvant chemotherapy, primarynonfunction after the transplantation for recurrent tumor and metachronous rectal cancer, respectively.
Conclusion
Favorable long-term outcome could be expected for hepatoblastoma with complete tumor excision and adjuvant chemotherapy.
doi:10.4174/jkss.2011.81.2.134
PMCID: PMC3204570  PMID: 22066113
Hepatoblastoma; Surgery; Drug therapy; Transplantation
2.  Desmoplastic small round cell tumor of the stomach mimicking a gastric cancer in a child 
Journal of the Korean Surgical Society  2011;80(Suppl 1):S80-S84.
Intra-abdominal desmoplastic small round cell tumor (DSRCT) is a highly malignant tumor of uncertain histogenesis. Here we report a case of DSRCT involving the stomach, initially misdiagnosed as gastric cancer. A 12-year-old boy presented with upper abdominal pain developed 1 month prior. On gastroscopy, a 7-cm mass was noted involving the esophago-gastric junction to the fundus, and positron emission tomography showed multiple hot uptakes suggesting distant metastasis. Gastroscopic biopsy showed poorly differentiated malignant cells. We diagnosed as stage IV gastric cancer and treated with 6 cycles of chemotherapy. Laparotomy revealed a huge gastric mass along with peritoneal disseminations. Palliative proximal gastrectomy was performed. Pathological examination revealed transmural involvement of DSRCT, and t(11;22)(p12;q12) was demonstrated on fluorescence in situ hybridization test. The chemotherapeutic regimen was changed and the patient underwent 8 additional cycles of post-operative chemotherapy. The patient is now alive and the residual tumor shows no significant changes after chemotherapy.
doi:10.4174/jkss.2011.80.Suppl1.S80
PMCID: PMC3205364  PMID: 22066092
Stomach; Desmoplastic small round cell tumor; Children

Results 1-2 (2)