Book contents
- Frontmatter
- Contents
- CONTRIBUTORS
- PREFACE
- Chap 1 OVERVIEW OF SOFT TISSUE TUMORS
- Chap 2 RADIOLOGIC EVALUATION OF SOFT TISSUE TUMORS
- Chap 3 IMMUNOHISTOCHEMISTRY OF SOFT TISSUE TUMORS
- Chap 4 GENETICS OF SOFT TISSUE TUMORS
- Chap 5 MOLECULAR GENETICS OF SOFT TISSUE TUMORS
- Chap 6 FIBROBLAST BIOLOGY, FASCIITIS, RETROPERITONEAL FIBROSIS, AND KELOIDS
- Chap 7 FIBROMAS AND BENIGN FIBROUS HISTIOCYTOMAS
- Chap 8 FIBROMATOSES
- Chap 9 BENIGN FIBROBLASTIC AND MYOFIBROBLASTIC PROLIFERATIONS IN CHILDREN
- Chap 10 CHILDHOOD FIBROBLASTIC AND MYOFIBROBLASTIC PROLIFERATIONS OF VARIABLE BIOLOGIC POTENTIAL
- Chap 11 MYXOMAS AND OSSIFYING FIBROMYXOID TUMOR
- Chap 12 SOLITARY FIBROUS TUMOR, HEMANGIOPERICYTOMA, AND RELATED TUMORS
- Chap 13 FIBROBLASTIC AND MYOFIBROBLASTIC NEOPLASMS WITH MALIGNANT POTENTIAL
- Chap 14 LIPOMA VARIANTS AND CONDITIONS SIMULATING LIPOMATOUS TUMORS
- Chap 15 ATYPICAL LIPOMATOUS TUMOR AND LIPOSARCOMAS
- Chap 16 SMOOTH MUSCLE TUMORS
- Chap 17 GASTROINTESTINAL STROMAL TUMOR
- Chap 18 STROMAL TUMORS AND TUMOR-LIKE LESIONS OF THE FEMALE GENITAL TRACT
- Chap 19 ANGIOMYOLIPOMA AND RELATED TUMORS (PERIVASCULAR EPITHELIOID CELL TUMORS)
- Chap 20 RHABDOMYOMAS AND RHABDOMYOSARCOMAS
- Chap 21 HEMANGIOMAS, LYMPHANGIOMAS, AND REACTIVE VASCULAR PROLIFERATIONS
- Chap 22 HEMANGIOENDOTHELIOMAS, ANGIOSARCOMAS, AND KAPOSI'S SARCOMA
- Chap 23 GLOMUS TUMOR, SINONASAL HEMANGIOPERICYTOMA, AND MYOPERICYTOMA
- Chap 24 NERVE SHEATH TUMORS
- Chap 25 NEUROECTODERMAL TUMORS: MELANOCYTIC, GLIAL, AND MENINGEAL NEOPLASMS
- Chap 26 PARAGANGLIOMAS
- Chap 27 PRIMARY SOFT TISSUE TUMORS WITH EPITHELIAL DIFFERENTIATION
- Chap 28 MALIGNANT MESOTHELIOMA AND OTHER MESOTHELIAL PROLIFERATIONS
- Chap 29 MERKEL CELL CARCINOMA AND METASTATIC AND SARCOMATOID CARCINOMAS INVOLVING SOFT TISSUE
- Chap 30 CARTILAGE- AND BONE-FORMING TUMORS AND TUMOR-LIKE LESIONS
- Chap 31 SMALL ROUND CELL TUMORS
- Chap 32 ALVEOLAR SOFT PART SARCOMA
- Chap 33 PATHOLOGY OF SYNOVIA AND TENDONS
- Chap 34 MISCELLANEOUS TUMOR-LIKE LESIONS, AND HISTIOCYTIC AND FOREIGN BODY REACTIONS
- Chap 35 LYMPHOID, MYELOID, HISTIOCYTIC, AND DENDRITIC CELL PROLIFERATIONS IN SOFT TISSUES
- Chap 36 CYTOLOGY OF SOFT TISSUE LESIONS
- Chap 37 SURGICAL MANAGEMENT OF SOFT TISSUE SARCOMA: HISTOLOGIC TYPE AND GRADE GUIDE SURGICAL PLANNING AND INTEGRATION OF MULTIMODALITY THERAPY
- Chap 38 MEDICAL ONCOLOGY OF SOFT TISSUE SARCOMAS
- Index
- References
Chap 22 - HEMANGIOENDOTHELIOMAS, ANGIOSARCOMAS, AND KAPOSI'S SARCOMA
Published online by Cambridge University Press: 01 March 2011
- Frontmatter
- Contents
- CONTRIBUTORS
- PREFACE
- Chap 1 OVERVIEW OF SOFT TISSUE TUMORS
- Chap 2 RADIOLOGIC EVALUATION OF SOFT TISSUE TUMORS
- Chap 3 IMMUNOHISTOCHEMISTRY OF SOFT TISSUE TUMORS
- Chap 4 GENETICS OF SOFT TISSUE TUMORS
- Chap 5 MOLECULAR GENETICS OF SOFT TISSUE TUMORS
- Chap 6 FIBROBLAST BIOLOGY, FASCIITIS, RETROPERITONEAL FIBROSIS, AND KELOIDS
- Chap 7 FIBROMAS AND BENIGN FIBROUS HISTIOCYTOMAS
- Chap 8 FIBROMATOSES
- Chap 9 BENIGN FIBROBLASTIC AND MYOFIBROBLASTIC PROLIFERATIONS IN CHILDREN
- Chap 10 CHILDHOOD FIBROBLASTIC AND MYOFIBROBLASTIC PROLIFERATIONS OF VARIABLE BIOLOGIC POTENTIAL
- Chap 11 MYXOMAS AND OSSIFYING FIBROMYXOID TUMOR
- Chap 12 SOLITARY FIBROUS TUMOR, HEMANGIOPERICYTOMA, AND RELATED TUMORS
- Chap 13 FIBROBLASTIC AND MYOFIBROBLASTIC NEOPLASMS WITH MALIGNANT POTENTIAL
- Chap 14 LIPOMA VARIANTS AND CONDITIONS SIMULATING LIPOMATOUS TUMORS
- Chap 15 ATYPICAL LIPOMATOUS TUMOR AND LIPOSARCOMAS
- Chap 16 SMOOTH MUSCLE TUMORS
- Chap 17 GASTROINTESTINAL STROMAL TUMOR
- Chap 18 STROMAL TUMORS AND TUMOR-LIKE LESIONS OF THE FEMALE GENITAL TRACT
- Chap 19 ANGIOMYOLIPOMA AND RELATED TUMORS (PERIVASCULAR EPITHELIOID CELL TUMORS)
- Chap 20 RHABDOMYOMAS AND RHABDOMYOSARCOMAS
- Chap 21 HEMANGIOMAS, LYMPHANGIOMAS, AND REACTIVE VASCULAR PROLIFERATIONS
- Chap 22 HEMANGIOENDOTHELIOMAS, ANGIOSARCOMAS, AND KAPOSI'S SARCOMA
- Chap 23 GLOMUS TUMOR, SINONASAL HEMANGIOPERICYTOMA, AND MYOPERICYTOMA
- Chap 24 NERVE SHEATH TUMORS
- Chap 25 NEUROECTODERMAL TUMORS: MELANOCYTIC, GLIAL, AND MENINGEAL NEOPLASMS
- Chap 26 PARAGANGLIOMAS
- Chap 27 PRIMARY SOFT TISSUE TUMORS WITH EPITHELIAL DIFFERENTIATION
- Chap 28 MALIGNANT MESOTHELIOMA AND OTHER MESOTHELIAL PROLIFERATIONS
- Chap 29 MERKEL CELL CARCINOMA AND METASTATIC AND SARCOMATOID CARCINOMAS INVOLVING SOFT TISSUE
- Chap 30 CARTILAGE- AND BONE-FORMING TUMORS AND TUMOR-LIKE LESIONS
- Chap 31 SMALL ROUND CELL TUMORS
- Chap 32 ALVEOLAR SOFT PART SARCOMA
- Chap 33 PATHOLOGY OF SYNOVIA AND TENDONS
- Chap 34 MISCELLANEOUS TUMOR-LIKE LESIONS, AND HISTIOCYTIC AND FOREIGN BODY REACTIONS
- Chap 35 LYMPHOID, MYELOID, HISTIOCYTIC, AND DENDRITIC CELL PROLIFERATIONS IN SOFT TISSUES
- Chap 36 CYTOLOGY OF SOFT TISSUE LESIONS
- Chap 37 SURGICAL MANAGEMENT OF SOFT TISSUE SARCOMA: HISTOLOGIC TYPE AND GRADE GUIDE SURGICAL PLANNING AND INTEGRATION OF MULTIMODALITY THERAPY
- Chap 38 MEDICAL ONCOLOGY OF SOFT TISSUE SARCOMAS
- Index
- References
Summary
This chapter includes borderline to low-grade malignant vascular tumors (hemangioendotheliomas) and malignant vascular tumors (angiosarcoma and Kaposi's sarcoma).
Hemangioendothelioma is the designation for a group of borderline or outright malignant vascular tumors. They are capable of aggressive local growth, recurrence, or both, and some, especially epithelioid hemangioendothelioma, can also metastasize.
Angiosarcomas (AS) are malignant endothelial neoplasms. They are very rare compared with hemangiomas and comprise <1% of all vascular tumors and only 1% to 2% of all sarcomas. ASs are essentially composed of malignant endothelial cells representing endothelial cell neoplasms. They include rare low-grade variants but most are the high-grade variety. The features that aid in recognition of an angiosarcoma are disorganized and anastomosing vascular channels, permeative growth versus lobulation of the vascular units, and multilayered, atypical endothelia, often with solid areas, and a general lack of pericytes of the vessel wall. Lymphangiosarcomas are not recognized separately. ASs are frequently multifocal, making it sometimes difficult to determine the primary site. Because of this multifocal tendency, angiosarcomas are excluded from sarcoma staging systems.
Radiation and environmental carcinogens play a causal role, the latter especially in hepatic ASs. By their location, the endothelial cells are directly exposed to circulating carcinogens. The genetic mechanisms related to the pathogenesis of AS are much less understood than those for many other sarcomas, however.
Kaposi's sarcoma is etiologically related to human herpesvirus 8, which is one of the strongest connections between a virus and human mesenchymal neoplasia.
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- Modern Soft Tissue PathologyTumors and Non-Neoplastic Conditions, pp. 617 - 647Publisher: Cambridge University PressPrint publication year: 2010
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