Solitary Fibrous Tumors and So-Called Hemangiopericytoma

Table 1

The current partition of the old-term “hemangiopericytoma” (HPC).

True HPC, with myoid/pericytic differentiation	(i) HPC
	(ii) Infantile HPC (infantile myofibromatosis)
	(iii) Glomangiopericytoma/myopericytoma
Solitary fibrous tumour (SFT) group	(i) SFT
	(ii) Giant cell angiofibroma
	(iii) Lipomatous HPC
Other tumours with HPC-like features	(i) Synovial sarcoma with HPC-like features