title: Spontaneous delivery of renal stone into the retroperitoneum.
mesh_terms: D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000000981:diagnostic imaging* / Q000209:etiology; D008875:Middle Aged; D011859:Radiography; D012187:Retroperitoneal Space; D012422:Rupture, Spontaneous