We report the case of a 48 year-old woman presently with a pararenal tumor,
with a history of pyelotomy in 1978 for the extraction of a renal pelvic s
tones. Results of surgery showed a foreign body. The clinical and diagnosti
c aspects of retained surgical gauze have been discussed and the need for r
adio-opaque markers in them have been emphasiezd. (C) 2001 Editions scienti
fiques et medicales Elsevier SAS.