The diagnosis of PTC is usually difficult to establish on a simple histological examination in the absence of specific cytological, architectural or immuno-histochemical markers. This diagnosis must therefore be based on a combination of clinical, radiological and histological signs in a context of atypical presentation of parathyroid tumour.

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There was substantial variability of hemangiopericytoma presentation depending on location. Hemangiopericytomas of the nose and paranasal sinuses are considered a distinct entity with a good prognosis. Treatment is based on endoscopic sinus surgery. The histological approach requires the use of immunohistochemistry. Recurrences vary in the literature depending on the initial resection quality. Metastases are rare.

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