Ramia, José Manuel "Ancient" schwannoma in the psoas muscle. [electronic resource] - Cirugia espanola Feb 2016 - e37-9 p. digital Publication Type: Letter ISSN: 1578-147X Standard No.: 10.1016/j.ciresp.2015.01.008 doi Subjects--Topical Terms: HumansMuscle NeoplasmsNeurilemmomaPsoas Muscles