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Flashcards in X - The Blood Vessels Deck (69)
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Appears as red-blue, soft, spongy masses 1-2 cm in diameter, which can affect large subcutaneous areas of the face, extremities, and othe body regions. Mass is sharply defined but not encapsulated, composed of large, cavernous, blood-filled spaces.

Cavernous hemangioma(TOPNOTCHRobbins Basic Pathology, 8th Ed p. 372


This form of capillar hemangioma is a rapidly growing peduncular red nodule on the skin, gingival, or oral mucosa, bleeds easily and is often ulcerated.

Pyogenic granuloma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 373


These are round, slightly elevated, red-blue firm nodules, less than 1 cm diameter that can resemble a minute focus of hemorrhage UNDER THE NAIL. Histologically, these are aggregates, nests, and masses of tumor cells intimately associated with branching vascular channels.

Glomus tumor (Glomangioma)(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 373


A specialized arteriovenous structure involved in thermoregulation.

Glomus body(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 373


This lesion is the ordinary "birthmark" and is the most common form of ectasia. Characteristically a flat lesion on the head or neck, ranging in color from light pink to deep purple.

Nevus flammeus(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 374


This non-neoplastic vascular lesion grossly resembles a spider. There is radial, often pulsatile array of dilated subcutaneous arteries or arterioles about a central core, that blanches when pressure is applied to its center.

Spider telangiectasia(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 374


An opportunistic infection in immunocompromised persons that manifest as vascular proliferations involving skin, bone, brain and other organs. Characterized grossly by red papules and nodules, or rounded subcutaneous masses. Histologically, there is capillary proliferation with prominent epitheloid EC's showing nuclear atypia and mitoses. Lesions contain stromal neutrophils, nuclear dust nd purplish granular material.

Bacillary angiomatosis(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 374


Common in patients with AIDS, caused by HHV 8, causing skin lesions ranging from patches, plaques to nodules.

Kaposi sarcoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 375


These are malignant endothelial neoplasms, with varying histology from plump, anaplastic but recognizable endothelial cells producing vascular channels to widely undifferentiated tumors having solid, spindle cell appearance and producing nondefinite blood vessels.

Angiosarcoma(TOPNOTCH)Robbins Basic Pathology, 8th Ed p. 376