Renal pseudotumor due to a retained perirenal sponge: CT features.
A case of a surgically retained, encapsulated sponge presenting as an unusual cause of renal pseudotumor is described in a man who had a partial nephrectomy for renal cell carcinoma 1 year before. The nonspecific sonographic appearance of a hyperechoic renal mass and the atypical CT features of a thick-walled indeterminate mass suggested a hematoma, a hemorrhagic cyst, or a hemorrhagic neoplasm. A retained surgical sponge within a thick fibrotic capsule adhesive to the renal capsule was found at surgery.
Grieten
M
M
Department of Radiology, University Hospitals K.U.Leuven, Belgium.
Van Poppel
H
H
Baert
L
L
Baert
A L
AL
Oyen
R
R
D003937:Diagnosis, Differential; D005547:Foreign Bodies / Q000000981:diagnostic imaging*; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging*; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy; D015503:Surgical Sponges; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography