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Hemangiopericytoma in Child
Other Resources UpToDate PubMed

Hemangiopericytoma in Child

Contributors: Patricia Ting MD, Ben Barankin MD, Jeffrey D. Bernhard MD
Other Resources UpToDate PubMed


Hemangiopericytomas (HAPs) are rare, benign, or low-grade sarcomas (ie, connective tissue tumors) originating from pericytes (mesenchymal-derived cells surrounding capillaries and venules). The etiology of HAP is unknown, although chemical carcinogens and radiation may be contributory.

HAP occurs mainly in adults; children are rarely affected. Both sexes are affected equally. Because of the asymptomatic nature of HAP, the diagnosis may be delayed by months or even years, particularly for low-grade and slow-growing lesions. More aggressive forms of HAP exist as well. Morbidity and mortality are attributed to locally invasive disease and hematogenous metastases to the lungs (most common) or the intra-abdominal or retroperitoneal region.

Pediatric Patient Considerations:
HAP is rare in children, accounting for less than 10% all cases. A rare form of infantile HAP (in children less than 1 year old) is considered congenital.


D48.1 – Neoplasm of uncertain behavior of connective and other soft tissue

134335004 – Hemangiopericytoma

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Differential Diagnosis & Pitfalls

  • Angiosarcoma of skin – any tumor of vessel origin; liver angiosarcoma is fatal and associated with vinyl chloride exposure
  • Chondrosarcoma, mesenchymal type – rarely associated with metastases
  • Fibrous histiocytoma – general category for any soft tissue sarcoma not otherwise specified
  • Hemangioendothelioma
  • Lymphangiosarcoma – arises in limbs with chronic primary or secondary lymphedema (upper > lower)
  • Solitary fibrous tumor – considered a benign neoplasm
  • Synovial sarcoma – occurs near joints
  • Vascular lesions (eg, vascular malformations or aneurysms) – audible bruits may sometimes be present due to the high vascularity of HAP

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Last Updated:01/17/2022
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Hemangiopericytoma in Child
A medical illustration showing key findings of Hemangiopericytoma : Tumor, Multiple nodules, Red
Clinical image of Hemangiopericytoma - imageId=642368. Click to open in gallery.  caption: 'A close-up of a cluster of smooth and glistening red papules of varying sizes.'
A close-up of a cluster of smooth and glistening red papules of varying sizes.
Copyright © 2024 VisualDx®. All rights reserved.