Head and Neck ImagingHaemangiopericytoma, head and neck
vascular tumour that can arise wherever
capillaries are present. The pericytes surrounding the
endothelial cells are believed to be the cells of
tumour origin. About 15 - 25% of haemangiopericytomas occur in the head and neck region, half of these in the nose or
paranasal sinuses. It is a rapidly growing, usually painless
tumour, and is seen at all ages. The prognosis after resection is unpredictable; they should be regarded as locally aggressive tumours with a relatively high recurrence rate. On
CT and
MRI, a haemangiopericytoma appears as an expansile, bone remodelling
lesion with variable enhancement of the mass (
Fig.1).
RH
To view high resolution images,
please register first.
Click
here
to register.
Already registered? Enter your e-mail in the window below.Re-registerFig.1
Coronal T1-weighted spin-echo image. A strongly enhancing expansile mass is seen in the right maxillary sinus, displacing and eroding the orbital floor, extending into the nasal cavity and through the lateral maxillary wall.
 | |
Haemangiopericytoma, head and neck, Fig.1 | |