For SPB the most common presenting symptom is that of pain in the affected bone. Back pain and other consequences of the bone lesion may occur such as spinal cord compression or pathological fracture. Around 85% of extramedullary<unk>  presents within the upper respiratory tract mucosa, causing possible symptoms such as epistaxis, rhinorrhoea and nasal obstruction. In some tissues it may be found as a palpable mass.
Plasmacytoma
Astrocytoma
Oligoastrocytoma
Retinoblastoma
Histiocytoma
Osteoblastoma
Pineocytoma
Ameloblastoma