title: [Uselessness of systematic bone scintigraphy in the assessment of the spread of bladder cancer, before excision surgery].
abstract: The authors reviewed bone scans in 55 patients with carcinoma of the bladder. Only 3 patients had a pathological bone scan. In two, an ordinary X-ray of the spine (visible on IVP) showed the existence of bone metastases. Thus amongst the total of 55 cases, bone scan was of specific value only once (1,9%). The authors mention the frequency of bone metastases at autopsy (24 to 37%) and the superiority of bone scan over an ordinary radiological skeletal survey. In the literature, false negative results for bone scan do not exceed 5% whilst the false negative rate for ordinary X-ray is 19%. Despite this reliability, bone scan alone is of basic importance in only a small number of cases. The present series is in line with those in the literature. Thus, other than where there is a special indication, the authors no longer request a bone scan in the assessment of spread of carcinoma of the bladder.
mesh_terms: D001859:Bone Neoplasms / Q000000981:diagnostic imaging* / Q000556:secondary; D005069:Evaluation Studies as Topic; D006801:Humans; D011877:Radionuclide Imaging; D001749:Urinary Bladder Neoplasms / Q000000981:diagnostic imaging*
vernacular_title: De l'inutilité de la scintigraphie osseuse systématique dans l'appréciation de l'extension d'un cancer de vessie, avant chirurgie d'exérèse.