neoplasms of the vascular system. hemangioma increased number of vessels- hamartoma capillary-small...
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Neoplasms of the Vascular System
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Hemangioma Increased number of vessels-
hamartoma Capillary-small channels Cavernous-large channels Pyogenic granuloma-proliferating
vessels in inflammation Pregnancy tumor
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hemangioma
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hemangioma
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Giant hemangioma- may sequester platelets
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Lymphangioma Simple-capillary type Cavernous-Cystic Hygroma
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Glomus Tumor Benign, painful tumor of glomus body A thermoregulator A-V anastomsis
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Vascular Ectasia Nervus flammeus-Sturge-Weber
syndrome Spider Telangiectasia (Osler-Weber-
Rendu Disease)
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Port wine stain- nevus flammeusSturge-Weber syndrome
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Bacillary Angiomatosis
Opportunistic infection of immunocompromised individuals(AIDS)
Bartonella henselae (cat scratch) Nodules of proliferating capillaries -with
nuclear atypia and mitoses & neutrophils Cat is the reservoir and the cat flea is the
vector B. quintana causes trench fever-louse is
vector
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Kaposi’s Sarcoma Classic-old men, lesion on lower
extremity Lymphadenopathic-(African) young Transplanted associated-skin and
internal lesions AIDS associated Viral associated-herpes type 8
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Kaposi Sarcoma (AIDS associated)
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Kaposi sarcoma
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Hemangioendothelioma Intermediate between benign and
malignant
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Angiosarcoma
Malignant neoplasm of vessels Older adults-skin, soft tissue, breast, and
liver Angiosarcoma of liver-rare but important
because Thorotrast-a radioactive contrast medium Polyvinyl chloride exposure among workers
Of arm - Induced by radiation & surgery for Breast cancer
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Angiosarcoma of liver
Enviromental factors:-thorotrast a contrast agent-Polyvinyl chloride
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Hemangiopericytoma Rare Most on lower extremity
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Neoplasms of the HeartPrimary
Rare Myxoma - benign, most common in atrium, mimic
mitral stenosis Rhabdomyoma- in infants & children Sarcoma
Secondary Malignant melanoma Lung carcinoma Breast carcinoma Lymphoma-Leukemia
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Atrial myxoma-acts like mitralstenosis
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Atrial myxoma