The spleen.
Kurtz
A B
AB
D003560:Cysts / Q000175:diagnosis; D006801:Humans; D013154:Spleen / Q000033:anatomy & histology / Q000473:pathology*; D013158:Splenic Diseases / Q000175:diagnosis*; D013160:Splenic Neoplasms / Q000175:diagnosis; D013161:Splenic Rupture / Q000175:diagnosis; D013163:Splenomegaly / Q000175:diagnosis; D014463:Ultrasonography