title: Idiopathic and spontaneously regressing thrombus in right renal vein and inferior vena cava.
abstract: We present the case of a 57-year-old woman with a thrombus in the right renal vein and the inferior vena cava that disappeared spontaneously during 6 months of observation. She had no thrombus-related disease such as kidney cancer, dehydration, multiple myeloma, nephrotic syndrome, or abnormal coagulability. While various examinations were being performed over a 2 month period the thrombus regressed spontaneously. After 6 months of follow-up the thrombus could not be seen on abdominal computerized tomography scan. Twenty months after disappearance of the thrombus the patient is doing well and has no recurrence of thrombus.
authors.affiliation: Department of Urology, Hokkaido University School of Medicine, Sapporo, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Chikaraishi
authors.forename: S
authors.initials: S
authors.lastname: Kobayashi
authors.forename: H
authors.initials: H
authors.lastname: Harada
authors.forename: T
authors.initials: T
authors.lastname: Komaki
authors.forename: T
authors.initials: T
authors.lastname: Koyanagi
mesh_terms: D000005:Abdomen / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008875:Middle Aged; D012075:Remission, Spontaneous; D012082:Renal Veins; D013924:Thrombophlebitis / Q000000981:diagnostic imaging / Q000503:physiopathology*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography; D014682:Vena Cava, Inferior