Anaplastic hemangiopericytoma manifesting as a rapidly enlarging extracranial mass lesion. 2012

Naoki Otani, and Hiroshi Nawashiro, and Kojiro Wada, and Kenzo Minamimura, and Satoru Takeuchi, and Katsuji Shima
Department of Neurosurgery, National Defense Medical College, Saitama, Japan.

We, herein, present a patient with a recurrent anaplastic hemanigiopericytoma manifesting as a rapidly enlarging extracranial mass lesion, which was revealed by pathological and intraoperative findings. In practice, this case highlights the mandatory need for a careful long-term follow-up for patients with hemangiopericytoma, since recurrence with a greater degree of malignancy can develop following an extended disease-free interval, as such knowledge will be helpful for planning the optimal surgical procedures.

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