hemangioblastoma

noun

hem·​an·​gio·​blas·​to·​ma ˌhē-ˌman-jē-ō-(ˌ)blas-ˈtō-mə 

variants or chiefly British haemangioblastoma

plural hemangioblastomas also hemangioblastomata -mət-ə 

: a hemangioma especially of the cerebellum that tends to be associated with von Hippel-Lindau disease