PT - JOURNAL ARTICLE AU - Atkin, N. B. AU - Petković, I. TI - Variable sex chromatin pattern in an early carcinoma of the bladder AID - 10.1136/jcp.26.2.126 DP - 1973 Feb 01 TA - Journal of Clinical Pathology PG - 126--129 VI - 26 IP - 2 4099 - http://jcp.bmj.com/content/26/2/126.short 4100 - http://jcp.bmj.com/content/26/2/126.full SO - J Clin Pathol1973 Feb 01; 26 AB - Sex chromatin studies on squash preparations of a well differentiated transitional cell carcinoma of the bladder without evidence of invasion from a female aged 63 revealed a single body in some regions, but two to four bodies in others. All regions were near diploid according to DNA estimations. Previous observations on a variety of invasive tumours of females showed that the presence of more than one sex chromatin body is generally associated with a high chromosome number. The pattern of two or more bodies in near-diploid cells seen in this non-invasive tumour may therefore characterize an intermediate stage of clonal evolution, eventually resulting in malignancy, when the cell line has not yet achieved the ability to invade or metastasize.