Biomedical subjects

W Dierkopf

Publications and source records attributed to W Dierkopf.

3 recordsLinked to original sources

PubMed1987

[Dilatation of the upper urinary tract in pregnancy--incidence, severity and follow-up. A sonographic study].

Incidence, onset and degree of the dilatation of upper urinary tract as well as the course throughout pregnancy was sonographically assessed in 310 pregnant women without symptoms from the urinary tract. 30 patients were regularly observed from the 16th week of gestation until delivery and within one week post partum. A grading system based on maximum calyceal diameter was used. 25% showed dilated calyces, primiparae more often than multiparae. The right kidney was dilated in 56, the left in 3 and both kidneys in 20 women. No decrease in parenchymal diameter was found during longer lasting dilatation of the pelvicalyceal system. Within one week after delivery the dilatation disappeared in nearly all cases. A gradual linear increase in incidence and severity of dilatation throughout pregnancy was found.

Dilatation, Pathologic↗

PubMed1983

Comparative study of suprapubic sonography and computed tomography for staging of prostatic carcinoma.

In addition to the digital rectal examination, suprapubic transvesical ultrasonography and computed tomography were used to stage local tumor extension in 41 patients with histologically proven prostatic carcinoma. Although 22% of the cases revealed stage A/B disease on rectal examination, these numbers were 7% for ultrasonography and 37% for CT. For stage C/D disease the percentages were 73% for digital rectal staging, 81% for sonography, and 30% for CT. Compared with the digital examination, 22% versus 10% of the cases had to be upstaged by the results of ultrasound versus CT. A downstaging became necessary by sonography in 7% and by CT in 44%. The results are compared with the findings after prostatectomy, autopsy, and cystoscopy as well as with pathohistological data from the literature. From these results, suprapubic transvesical sonography is considered to be more reliable than CT for local tumor staging.

Adult↗

PubMed1982

[Suprapubic prostatic sonography for staging prostatic carcinoma].

Sixty-one patients with histologically confirmed carcinomas of the prostate were examined by suprapubic, transvesical prostatic sonography in order to stage local tumor spread. The results were compared with rectal palpation. Compared with rectal palpation, sonography led to tumor up-staging in 16% and down-staging in 7%. The results showed good agreement with findings at prostatectomy, autopsy and cystoscopy. Additionally, the sonographic up-staging/down-staging figures were compared with "tumor staging after prostatectomy, as compared with clinical staging" quoted in the literature. It is concluded that suprapubic prostatic sonography is reliable supplementary method of examination for local tumor staging and that it improves the classification of local tumor extent.

Adult↗