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Journal ArticleDOI

Malignant vascular tumors in children and adolescents: a report from the Italian and German Soft Tissue Sarcoma Cooperative Group.

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TLDR
Angiosarcoma and related malignant vascular tumors are aggressive neoplasms with a poor prognosis; their behavior in children seems no different from their adult counterparts.
Abstract
Background Malignant vascular tumors are extremely rare in childhood and few data on their clinical management are available. We report on a series of 18 children who had malignant vascular tumors, treated from 1980 to 2000 by the Italian and German Soft Tissue Sarcoma Cooperative Group. Procedure Twelve patients had angiosarcoma, four had malignant hemangioendothelioma, and two had Kaposi's sarcoma. Surgical resection was completed in six cases; radiotherapy was administered to 6 children, and chemotherapy to 14. Results After a median follow-up of 208 months, the 5-year survival and event-free survival rates were 30.9 and 20.8%. Six patients were alive, four in first remission (three had tumor < 5 cm, grossly completely resected), and two in second remission. Response to chemotherapy was evaluable in nine cases and was: six no response, two partial remission, one complete remission. Conclusions Angiosarcoma and related malignant vascular tumors are aggressive neoplasms with a poor prognosis; their behavior in children seems no different from their adult counterparts. Complete surgical resection remains the mainstay of treatment, but is probably sufficient in only a minority of cases. Postoperative radiotherapy may have a role and could be added to improve local control. The role of chemotherapy is uncertain, but the high rate of metastatic spread prompts investigation into new chemotherapeutic approaches. Med Pediatr Oncol 2002;39:109–114. © 2002 Wiley-Liss, Inc.

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Neurofibromatosis type 1.

TL;DR: Although considerable progress has been made in understanding this condition, numerous challenges remain; a collaborative and interdisciplinary approach is required to manage individuals with neurofibromatosis type1 and to develop effective treatments.
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Forward genetic screen for malignant peripheral nerve sheath tumor formation identifies new genes and pathways driving tumorigenesis

TL;DR: The Sleeping Beauty transposon-based somatic mutagenesis system in mice with somatic loss of transformation-related protein p53 (Trp53) function and/or overexpression of human epidermal growth factor receptor (EGFR) was used to identify genetic drivers of MPNST development, and several new proto-oncogenes, including Foxr2 (encoding forkhead box R2), were identified.
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Antiangiogenetic therapy with pioglitazone, rofecoxib, and metronomic trofosfamide in patients with advanced malignant vascular tumors.

TL;DR: The efficacy of metronomically scheduled, low‐dose trofosfamide in combination with the peroxisome proliferator‐activated receptor γ agonist, pioglitazone, and the selective cyclooxygenase‐2 inhibitor, rofecoxib was evaluated in patients with advanced vascular malignancies.
References
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Book ChapterDOI

Nonparametric Estimation from Incomplete Observations

TL;DR: In this article, the product-limit (PL) estimator was proposed to estimate the proportion of items in the population whose lifetimes would exceed t (in the absence of such losses), without making any assumption about the form of the function P(t).
Journal ArticleDOI

The intergroup rhabdomyosarcoma study‐I. A final report

TL;DR: The authors conclude that for the therapeutic regimens evaluated there was no therapeutic advantage to including radiation in the treatment of Clinical Group I disease, or cyclophosphamide given as a daily low‐dose oral regimen in thetreatment of clinical Group II disease or Adriamycin in the Treatment of Clinical Groups III and IV diseases.
Journal ArticleDOI

Angiosarcoma: A report of 67 patients and a review of the literature

TL;DR: A retrospective review of patients seen at their institution with the intent of identifying prognostic factors and optimal treatment strategies for angiosarcomas was undertook.
Journal ArticleDOI

Angiosarcoma of the face and scalp, prognosis and treatment

TL;DR: 72 patients with angiosarcoma of the face and scalp have been analyzed with respect of various prognostic factors and the effects of different treatment regimes, finding the overall poor prognosis and the apparent eradication of the local skin disease were poor.
Journal ArticleDOI

Angiosarcoma of skin and soft tissue: A study of forty-four cases

TL;DR: Survition was generally poor in all groups, owing to frequent local recurrence and early metastasis, and only nine patients had long‐term, disease‐free survival.
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