title: Extramedullary hematopoiesis encasing the pelvicalyceal system: CT findings.
abstract: A rare case of symmetric renal extramedullary hematopoiesis is hypothesized in a patient with long-standing Vaquez' disease and myelofibrosis. At CT, soft tissue densities were found in the renal hilar area encasing the pelvicalyceal system. Although there is nothing specific about the CT findings, the diagnosis can be suggested in the proper clinical setting. The association with generalized osteosclerosis is another diagnostic clue.
authors.affiliation: Department of Radiology, University Hospitals, Leuven, Belgium.
authors.forename: S
authors.initials: S
authors.lastname: Gryspeerdt
authors.forename: R
authors.initials: R
authors.lastname: Oyen
authors.forename: L
authors.initials: L
authors.lastname: Van Hoe
authors.forename: A L
authors.initials: AL
authors.lastname: Baert
authors.forename: M
authors.initials: M
authors.lastname: Boogaerts
mesh_terms: D003937:Diagnosis, Differential; D006411:Hematopoiesis, Extramedullary / Q000502:physiology*; D006801:Humans; D007670:Kidney Calices / Q000000981:diagnostic imaging*; D007682:Kidney Pelvis / Q000000981:diagnostic imaging*; D011087:Polycythemia Vera / Q000097:blood / Q000150:complications / Q000000981:diagnostic imaging*; D055728:Primary Myelofibrosis / Q000097:blood / Q000000981:diagnostic imaging* / Q000209:etiology; D014057:Tomography, X-Ray Computed