from the literature review of ultrastructure of glomus tumor , hemangiopericytomas ( hpc ) , leiomyoblastomas and leiomyomas , the glomus tumor appeared to exist as an intermediate form between hpc and leiomyomas which were considered to be in a broad spectrum of smooth muscle tumors .
C0086533
leiomyoblastomas
C0023267
leiomyomas