Hemangiopericytoma

Introduction: Hemangiopericytoma

Description of Hemangiopericytoma

Hemangiopericytoma (medical condition): A slow growing tumor that develops in deep soft tissues...more »

Hemangiopericytoma: An uncommon vascular, usually benign, neoplasm composed of round and spindle cells that are derived from the pericytes and surround endothelium-lined vessels; malignant hemangiopericytomas are difficult to distinguish microscopically from the benign. [hemangio- + pericyte + G. -oma, tumor]
Source: Stedman's Medical Spellchecker, © 2006 Lippincott Williams & Wilkins. All rights reserved.

Hemangiopericytoma: A type of cancer involving blood vessels and soft tissue.
Source: National Institute of Health

Hemangiopericytoma: A mesenchymal tumor of perivascular cell origin, composed of dilated vascular spaces (some with a staghorn or bifed shape) throughout the entire tumor. The tumor cells are surrounded by reticulin, are negative for muscle, nerve sheath, and epithelial markers, and are positive for CD34. The biologic behavior of hemangiopericytoma cannot always be predicted from the morphologic features. The 5- and 10-year survival rates of malignant hemangiopericytomas have been reported to be 40% and 29% respectively (partially adapted from S. Sternberg's Diagnostic Surgical Pathology, 3rd ed., 1999). -- 2004
Source: Diseases Database

Hemangiopericytoma: A tumor composed of spindle cells with a rich vascular network, which apparently arises from pericytes, cells of smooth muscle origin that lie around small vessels. Benign and malignant hemangiopericytomas exist, and the rarity of these lesions has led to considerable confusion in distinguishing between benign and malignant variants. (From Dorland, 27th ed; DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1364).
Source: MeSH 2007

Hemangiopericytoma: Related Topics

These medical condition or symptom topics may be relevant to medical information for Hemangiopericytoma:

Hemangiopericytoma: Rare Disease

Office of Rare Diseases (ORD) of the National Institutes of Health (NIH)

Hemangiopericytoma is listed as a "rare disease" by the Office of Rare Diseases (ORD) of the National Institutes of Health (NIH). This means that Hemangiopericytoma, or a subtype of Hemangiopericytoma, affects less than 200,000 people in the US population.
Source - National Institutes of Health (NIH)

Ophanet

Ophanet, a consortium of European partners, currently defines a condition rare when if affects 1 person per 2,000. They list Hemangiopericytoma as a "rare disease".

Source - Orphanet