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Unusual Case of Metastatic Intracranial Hemangiopericytoma and Emphasis on Role of 68Ga-PSMA PET in Imaging.

We present a 53 year old woman initially diagnosed as hemangiopericytoma in the posterior fossa on the right side post excision with immunohistochemistry staining for CD34 being positive. Presently, the patient had difficulty in walking due to back pain and pain in left arm. Imaging with F-FDG PET showed low glucose avidity in disease sites but Ga-PSMA PET unequivocally demonstrated multiple skeletal and liver metastases with intense PSMA avidity. Patient received palliative radiotherapy to bone metastasis and was planned for chemotherapy. This report adds to the list of applications of Ga PSMA PET and a possible theranostic target.