JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
RESEARCH SUPPORT, U.S. GOV'T, P.H.S.
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Carcinoma in situ of the urinary bladder with and without associated vesical neoplasms.

Cancer 1983 August 2
Of 99 patients who had carcinoma-in situ (TIS) at least once between 1970 and 1980, 84 were subjected to detailed analysis and pathologic review. They may be classified into four groups: (Group 1) 14 patients, who presented with invasive bladder carcinoma (TCC) associated with TIS; (Group 2) 15 patients who, subsequent to the diagnosis of TIS with or without another superficial TCC developed muscle invasion (12 patients) or metastases without muscle invasion (three patients); (Group 3) 29 patients who underwent cystectomy for superficial TCC (Ta or T1, or TIS alone). Twenty (69%) had extravesical superficial extension. Two patients developed metastases subsequent to undergoing cystectomy; and (Group 4) 26 patients with TIS proven at least once who have not developed muscle invasion, metastases nor have undergone cystectomy. Nineteen had previous non-TIS superficial TCC. All patients in Groups 2 and 4 were treated conservatively (TUR +/- intravesical chemotherapy) when the initial diagnosis of TIS was made. Twelve patients in Group 3 underwent cystectomy within a month of the diagnosis of TIS. When 38 patients found to have TIS in association with the first diagnosis of superficial transitional cell carcinoma of the bladder were compared with 32 patients who had TIS diagnosed subsequent to their initial diagnosis of transitional cell carcinoma, the former group fared significantly worse (P less than 0.01) in regard to muscle invasion, metastases, or clinical indications for cystectomy.

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