Midterm results with hepatectomy after preoperative chemotherapy in hepatoblastoma
Department of Paediatric Surgery, All India Institute of Medical Sciences, New Delhi, 110029, India.Pediatric Surgery International (Impact Factor: 1). 06/2005; 21(5):364-8. DOI: 10.1007/s00383-005-1381-1
We evaluated the results of surgical treatment for hepatoblastoma in infants and children after intensive preoperative chemotherapy, with special reference to histology and extent of liver involvement. The clinical features of 10 children with hepatoblastoma were reviewed regarding response to neoadjuvant chemotherapy, histological subtypes, extent of hepatectomy, operative complications, and prognosis. Response to chemotherapy was measured by volumetric assessment of tumour size by computed tomography scan. Cisplatin and Adriamycin (PLADO regime) up to three cycles markedly reduced the tumour volume on computed tomography (mean regression rate 65.9%); alpha-foetoprotein (AFP) levels also decreased from an initial mean of 16,116.4 ng/ml to 2,050.9 ng/ml. Five patients underwent right hepatectomy, two had right trisegmentectomy, two had left hepatectomy, and one had left trisegmentectomy. Histopathology of resected specimens revealed foetal histology in four patients, poorly differentiated (anaplastic) subtype in three, and mixed histology with mesenchymal components and osteoid formation in three. There was 100% resectability including six unresectable tumours (prechemotherapy). Moreover, hepatic resection tended to be less invasive in patients whose tumours had been much reduced after preoperative chemotherapy. Preoperative administration of cisplatin and Adriamycin reduces the tumour size significantly so that a safe radical hepatectomy can be performed. It also allows early administration of postoperative chemotherapy. Although overall good results were obtained with the current protocol, we also document our experience of unfavourable outcomes in patients with bilobar tumours (despite trisegmentectomy), patients with tumours showing poor response to neoadjuvant chemotherapy, and patients with anaplastic histology. Overall, at a 60-month follow-up we report an 80% survival rate by a combined approach.
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- "Presently, survival is between 75% and 90%.[12–14] Multi-institutional trials have confirmed the feasibility of this approach in limited resource settings also. An initial surgical approach may be acceptable for resectable disease, but a neoadjuvant approach may be preferable in advanced stages. "
ABSTRACT: This study was designed to retrospectively review our experience with the multimodality management of hepatoblastomas (HB). Thirteen patients were treated for HB between 2000 and 2007. The clinical presentations, chemotherapy tolerance and response, surgical procedure undertaken, and complications were analysed. Median age of the population was 12 months (3-60 months), with a male-to-female ratio of 3.3:1. Nine patients were treated with neoadjuvant chemotherapy incorporating cisplatin and adriamycin. Primary surgery was done in four patients. Extent of hepatic resection in the operated patients varied. Mixed type was the predominant histopathological diagnosis. Adjuvant chemotherapy was well tolerated with no morbidity or mortality. Five-year event-free survival (EFS) and overall survival (OS) of all the 13 patients is 76.9%. All the nine patients who could complete multimodality treatment are alive with no evidence of disease or complications with median follow-up of 63 months (46-122 months). Treatment of HB with multidisciplinary approach was well tolerated. OS and EFS of patients were comparable with published studies.Journal of Indian Association of Pediatric Surgeons 03/2011; 16(1):11-4. DOI:10.4103/0971-9261.74514
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ABSTRACT: The eigenvalue placement of controllable generalized systems of the form E ˆ x ˙( t )= A ˆ x ( t )+ B ˆ u ( t ) by constant-ratio proportional derivative (CRPD) feedback control of the form u ( t )= K ˆ(ρ x ˆ( t )- x ( t )+ w ( t )) is discussed. The problem is an extension of the traditional state feedback control law, which is the case of E ˆ= I and ρ=0. A controllable canonical form and its transformation matrices are used to solve this problem. Based on the developed canonical transformation, pole assignment of generalized systems can be implemented easily. The development of the authors' method depends crucially on the properties of standard form generalized systems. One illustrative example is includedCircuits and Systems, 1992., Proceedings of the 35th Midwest Symposium on; 09/1992
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ABSTRACT: Though surgical resection is the main stay of treatment for childhood hepatoblastoma (HB), many are unsuitable for radical surgery at diagnosis due to extensive intrahepatic and/or extra hepatic disease. We report experience in five patients of HB from a single institution (2001-2005) with preoperative Neoadjuvant chemotherapy (NACT) followed by surgery. Three patients received cisplatin, doxorubicin; and two cisplatin / vincristine /5-fluorouracil. All showed more than 50% reduction in tumor size confirmed by CT scan. Hepatic resection R0 was performed in all. There was no chemotherapy related toxicity nor post surgical morbidity or mortality. All are disease free at median follow up of 4 years. NACT produces adequate down staging of the HB with acceptable toxicity. Though cisplatin with doxorubicin produced good results, new protocol with cisplatin, vincristine and 5FU is promising without cardiotoxicity.The Indian Journal of Pediatrics 09/2006; 73(8):735-7. DOI:10.1007/BF02898456 · 0.87 Impact Factor
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