Jm. Henneberry et al., THE SIGNIFICANCE OF INTRALUMINAL CRYSTALLOIDS IN BENIGN PROSTATIC GLANDS ON NEEDLE-BIOPSY, The American journal of surgical pathology, 21(6), 1997, pp. 725-728
Based on data from autopsy, radical prostatectomy, and cystoprostatect
omy specimens, it has been suggested that the finding of intraluminal
crystalloids in benign glands on needle biopsy may indicate a concurre
nt carcinoma; therefore, repeat biopsy is recommended. We studied data
from 56 consecutive needle biopsies from the Johns Hopkins Hospital a
nd Dianon Systems in which the diagnosis of intraluminal crystalloids
in benign glands was rendered and follow-up data were subsequently obt
ained. Cases in which crystalloids were present in glands suspicious f
or cancer, in glands of high-grade prostatic intraepithelial neoplasia
, or in adenosis were excluded from the study. Follow-up data included
repeat biopsy results and serum prostatic specific antigen levels. Of
the 56 men, 31 (55%) had repeat biopsy (two undervent transurethral r
esection of the prostate [TURP]); the remaining men were either noncom
pliant or had medical conditions precluding subsequent biopsy. Of the
31 men who underwent repeat biopsies, 23 (74%) had benign diagnoses, o
ne (3%) had high-grade prostatic intraepithelial neoplasia, and seven
(23%) had adenocarcinoma. There was no difference in serum prostate-sp
ecific antigen values between those with and without cancer on repeat
biopsy. In a control population of men with a benign first biopsy not
showing crystalloids, the incidence of cancer on repeat biopsy was 16.
2%, which was not statistically significantly different from the incid
ence found in our study group. We conclude that men with prostate biop
sy results showing benign glands with crystalloids are at no significa
ntly higher risk of having cancer on repeat biopsy than if crystalloid
s were not present.