Hemangiopericytomas are rare vascular tumours that are derived from pericytes. Retroperitoneal hemangiopericytomas are usually bulky but clinically silent when diagnosed because of their slow rate of growth. A 49-year-old man, who presented with only vague symptoms of abdominal fullness for several months, was found on computed tomography to have a huge well-defined mass with areas of low atten...

We report a case of renal hemangiopericytoma occurring in renal sinus and expanding to the renal hilum. This unusual presentation caused misinterpretation of this tumor as transitional cell carcinoma of the renal pelvis clinically. The patient who was a 30-year-old woman had a relatively well demarcated solid tumor, 8 x 6 cm, in the renal sinus of the left kidney.

STUDY DESIGN The retrospective analysis of intramedullary hemangiopericytomas (HPCs) was performed, and the entity was discussed in accordance with the literature findings. PURPOSE This study aimed at defining distinctive characteristic features of intramedullary HPC with respect to surgical approach and prognosis. OVERVIEW OF LITERATURE Intramedullary HPCs are extremely rare tumors. They o...

We have reviewed the literature data regarding the spectrum of tumors including solitary fibrous tumor and hemangiopericytoma with special focus on definition of the disease, discussion of the criteria for malignancy, and the key elements of standard treatment of localized disease. We have discussed the emerging concepts on the tumor biology and the different systemic treatments (chemotherapy a...

We describe a rare case of a primary intracranial meningeal hemangiopericytoma (HPC) with late metastasis to the cervical spine. A 36-year-old woman had a left occipital lesion that was histopathologically identified as HPC. Fourteen years after resection, the tumor recurred and was treated with radiotherapy. Three years later, CT imaging showed a large mass in the liver consistent with metasta...

Department of Oncology, The Third Affiliated Hospital of Soochow University, Changzhou 213003, China A patient with a seven-year history of recurrent metastatic hemangiopericytoma (HPC) was admitted. During his treatment, he received surgical resection, radiotherapy, radiofrequency hyperthermia and chemotherapy using combined doxorubicin, dacarbazin, vincristine, ginsenoside Rg3, and recombinan...