Canadian Medical Guide > Diseases > Neoplasms > Neoplasms by Histologic Type > Neoplasms, Vascular Tissue > Hemangioma > Hemangioma, Capillary Terms and Definitions




Hemangioma, Capillary

Medical Definition: A dull red, firm, dome-shaped hemangioma, sharply demarcated from surrounding skin, usually located on the head and neck, which grows rapidly and generally undergoes regression and involution without scarring. It is caused by proliferation of immature capillary vessels in active stroma, and is usually present at birth or occurs within the first two or three months of life. (Dorland, 27th ed)
Guide Notes: coord IM with precoord organ/neopl term (IM); do not confuse with HEMANGIOMA, LOBULAR CAPILLARY see GRANULOMA, PYOGENIC; distinguish from PORT-WINE STAIN
Previously Indexed: Hemangioma (1966-1993)
Hemangioma, Capillary Categories.
Canadian Medical Guide Definition Hemangioblastoma - A benign tumor of the nervous system that may occur sporadically or in association with HIPPEL-LINDAU DISEASE. It accounts for approximately 2% of intracranial tumors, arising most frequently in the cerebellar hemispheres and vermis. Histologically, the tumors are composed of multiple capillary and sinusoidal channels lined with endothelial cells and clusters of lipid-laden pseudoxanthoma cells. Usually solitary, these tumors can be multiple and may also occur in the brain stem, spinal cord, retina, and supratentorial compartment. Cerebellar hemangioblastomas usually present in the third decade with INTRACRANIAL HYPERTENSION, and ataxia. (From DeVita et al., Cancer: Principles and Practice of Oncology, 5th ed, pp2071-2)

Hemangioma, Capillary Medical Definitions and Terms

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