Objective To describe the clinical course and histological three had muscle invasion. One patient had low-grade TCC and 11 had high-grade TCC; six patients had a features of transitional cell carcinoma (TCC) of the bladder with microcysts.second primary tumour; three had a colon carcinoma, one a villous adenoma of the caecum, one a locally Patients and methods Among 940 patients with bladder TCC diagnosed at our institution during a 5 year advanced carcinoma of the prostate and the last a squamous cell carcinoma of the uterine cervix. period, 12 (1.2%; eight men and four women, mean age 71.1 years, range 52-85) were diagnosed histoConclusions Microcystic TCC was associated with highstage and high-grade bladder tumours and with other logically as having microcystic TCC. Sections of the tumours were stained with haematoxylin and eosin, primary tumours, especially of the colon. Screening these patients for asymptomatic tumours of the colon periodic acid-Schi and Alcian blue and clinical data obtained from the patients' records.is suggested.
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