hemangiopericytoma


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hemangiopericytoma

[hē¦mān·jē·ō‚per·ə·sī′tō·mə]
(medicine)
A tumor composed of endothelium-lined tubes or cords of cells surrounded by spherical cells with supporting reticulin network.
References in periodicals archive ?
Follow-up MRI showed a mass suggesting expansile hemangiopericytoma of the left posterior thorax.
berkhoffii genotype II from a boy with epithelioid hemangioendothelioma and a dog with hemangiopericytoma.
The patient is a 65-year-old-female with a history of recurrent left parietal hemangiopericytoma.
This pattern is consistent with a hemangiopericytoma (solitary fibrous tumor.
Resection of pelvic mesenchymal tumour was done in one patient with TIO and showed features of hemangiopericytoma (Figs 3, 4).
Also in a patient with hemangiopericytoma located in the anterior mediastinum the mass was misinterpreted as tumor in the left atrium on TTE.
We discuss the histogenesis of these tumors; the common vascular origin and the mutual transformation of these two rumors suggest that the hemangiopericytoma may also have developed during occupational exposure to high concentrations of vinyl chloride monomer.
We describe the use of an endoscopic modified Lothrop approach for clearance of an extensive sinonasal-type hemangiopericytoma of the nasal cavity and paranasal sinuses with bilateral frontal sinus involvement in a 44-year-old woman.
A vascular tumor originating from a pericyte--a perivascular, modified smooth muscle cell--was first described by Stout and Murray (4) in 1942, who coined the term hemangiopericytoma (HPC) for this tumor.
Hemangiopericytoma is the most dominant histologic diagnosis noted in TIO.
Histopathologic examination identified it as a hemangiopericytoma.
Many previously diagnosed spindle cell tumors such as mesothelioma, fibrosarcoma, hemangiopericytoma, and even malignant peripheral nerve sheath tumor (MPNST) and undifferentiated sarcoma could well represent underdiagnosed SS in this location.