Malign Recurrence of Primary Chest Wall Hemangiopericytoma in the Lung after Four Years : A Case Report and Review of the Literature

الملخص EN

Hemangiopericytoma (HPC) may develop in every site where the endothelial tissue exits and primarily develops in the skeletal-muscular system or the skin.

Adult cases of HPC generally exhibit a benign course.

20–30% of the cases may show a malign course.

The tumors that show more than four mitoses, a focal area of necrosis, and increased cellularity on a magnification ×10 are considered as malign.

In our paper, we presented our case who showed a lung metastasis at the end of 4 years and who developed a pathological fracture of the right humerus at the end of approximately 2 years, because hemangiopericytoma is rarely seen in the chest wall as a primary tumor.