Solitary fibrous tumor (hemangiopericytoma) metastases
Updates to Case Attributes
Patient with sensations in the right ear during pregnancy, which worsened after childbirth (tingling of the face). Initial CT and MRI with the finding of a large tumortumour in the right temporal lobe with an infiltration of the petrosal part of the temporal bone. Subsequently treated with preoperative embolization thenthan with a partial surgical resection followed by radiotherapy 5 years ago.
The recent follow-up study shows multiple lesions in both breasts, muscles of the abdominal/thoracic wall, liver, lungs and probably kidney which show similar characteristics. They are not easily recognizable in native CT/MRI and show no increase in glucose metabolism on PET. Their vivid early enhancement, distribution and patients history points to hemangiopericytoma metastases.
Note: Due to molecular/genetic similarities haemangiopericytomas are no longer recognised as distinct entities. Instead, they represent cellular higher-grade solitary fibrous tumours. In the 2016 revised 4th Edition of the WHO classification of CNS tumours, they were grouped together under one diagnosis (solitary fibrous tumour/haemangiopericytoma), and in the 2021 5th edition the term haemangiopericytoma was dropped entirely.
-<p>Patient with sensations in the right ear during pregnancy, which worsened after childbirth (tingling of the face). Initial CT and MRI with the finding of a large tumor in the right temporal lobe with an infiltration of petrosal part of the temporal bone. Subsequently treated with preoperative embolization then with a partial surgical resection followed by radiotherapy 5 years ago.</p><p>The recent follow-up study shows multiple lesions in both breasts, muscles of the abdominal/thoracic wall, liver, lungs and probably kidney which show similar characteristics. They are not easily recognizable in native CT/MRI and show no increase in glucose metabolism on PET. Their vivid early enhancement, distribution and patients history points to hemangiopericytoma metastases. </p>- +<p>Patient with sensations in the right ear during pregnancy, which worsened after childbirth (tingling of the face). Initial CT and MRI with the finding of a large tumour in the right temporal lobe with infiltration of the petrosal part of the temporal bone. Subsequently treated with preoperative embolization than with a partial surgical resection followed by radiotherapy 5 years ago.</p><p>The recent follow-up study shows multiple lesions in both breasts, muscles of the abdominal/thoracic wall, liver, lungs and probably kidney which show similar characteristics. They are not easily recognizable in native CT/MRI and show no increase in glucose metabolism on PET. Their vivid early enhancement, distribution and patients history points to hemangiopericytoma metastases. </p><p> </p><p><strong>Note:</strong> Due to molecular/genetic similarities haemangiopericytomas are no longer recognised as distinct entities. Instead, they represent cellular higher-grade solitary fibrous tumours. In the 2016 revised 4th Edition of the <a href="/articles/who-classification-of-cns-tumours-1">WHO classification of CNS tumours</a>, they were grouped together under one diagnosis (solitary fibrous tumour/haemangiopericytoma), and in the 2021 5th edition the term haemangiopericytoma was dropped entirely. </p>
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