Diagnosis and prediction of recurrence and progression in superficial bladder cancers with DNA image cytometry and urinary cytology.

Abstract

To investigate the roles of urinary cytology and image cytometric analysis of nuclear DNA ploidy pattern in the diagnosis and prediction of recurrence and/or progression of superficial bladder cancers. Aliquots of catheterized urine from 92 patients with primary (23) or previous (69) superficial bladder cancers were assessed using urine cytology and image-analysis cytometry independently. Of the 23 primary superficial transitional cell carcinomas (TCCs), 11 (48%) were detected by urinary cytology while 12 (52%) were detected by image-analysis cytometry (P>0.05) and 13 (57%) were revealed by combined cytology and cytometry. Of 42 recurrent superficial TCCs, 29 (69%) were detected by urinary cytology, whilst 19 (45%) were diagnosed by cytometry (P<0.05) and 29 (69%) by combined cytology and cytometry. The degree of ploidy in relation to pathological stage and/or grade showed an increasing frequency of aneuploid pattern in more invasive and undifferentiated tumours, but with no statistical significance (P>0.05). The positivity of DNA image cytometry had no significant association (P>0.05) with tumour recurrence and/or progression. DNA image cytometry can provide a limited but not significant advantage over urinary cytology in the detection of primary superficial TCCs, but it does not seem to be indicated for the prediction of tumour recurrence and/or progression.