title: Malign recurrence of primary chest wall hemangiopericytoma in the lung after four years: a case report and review of the literature.
abstract: 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.
authors.affiliation: Division of Medical Oncology, Tepecık Education and Research Hospital, Gaziler Caddesi, No. 468, Yenisehir, Izmir, Turkey.
authors.forename: Tulay
authors.initials: T
authors.lastname: Akman
authors.affiliation: Division of Medical Oncology, Izmir Ataturk Training and Research Hospital, Izmir, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Alacacioglu
authors.affiliation: Department of Internal Medicine, Dokuz Eylul Universıty Medical School, Izmir, Turkey.
authors.forename: Devrim
authors.initials: D
authors.lastname: Dolek
authors.affiliation: Division of Medical Oncology, Dokuz Eylul Universıty Medical School, Izmir, Turkey.
authors.forename: Tugba
authors.initials: T
authors.lastname: Unek
authors.affiliation: Department of Pathology, Dokuz Eylul Universıty Medical School, Izmir, Turkey.
authors.forename: Duygu
authors.initials: D
authors.lastname: Gurel
authors.affiliation: Division of Medical Oncology, Izmır University, Medical Park, Izmir, Turkey.
authors.forename: Ahmet Ugur
authors.initials: AU
authors.lastname: Yilmaz
authors.affiliation: Department of Thoracic Surgery, Dokuz Eylul Universıty Medical School, Izmir, Turkey.
authors.forename: Ahmet
authors.initials: A
authors.lastname: Onen