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Biomedical subjects

R Piazza

Publications and source records attributed to R Piazza.

At least 55 records · Page 3Linked to original sources
PubMed1991

Is there a relationship between benign prostatic hyperplasia and prostatic cancer?

No definite relationship can be demonstrated between benign prostatic hyperplasia (BPH) and prostatic cancer on the basis of various anatomic and morphologic features. However, interesting recent observations suggest a link between BPH and prostate cancer. Clinically, the simultaneous presence of benign and malignant disease is observed quite often, and this coexistence is bound to increase with the age of patients. Possible intermediate forms between BPH and early cancer have been investigated. Two premalignant lesions have been identified: atypical adenomatous hyperplasia and prostatic intraepithelial neoplasia.

Humans↗
PubMed1990

Vescica Ileale Padovana: a technique for total bladder replacement.

A new technique for detubularized and originally reshaped ileal total bladder replacement following radical cystectomy for bladder cancer is described and named 'Vescica Ileale Padovana'. 16 patients have been clinically, radiologically and urodynamically evaluated with a follow-up ranging from 4 to 18 months (mean 10 months). The complication rate was low: 1 ureteroileal stenosis; 2 urethroileal strictures. Daytime continence was perfect in 87% (14 of 16 patients). Nighttime continence was perfect (dry sleep for 6-7 h) in 81% (13 of 16 patients). The reservoir features were: high capacity (400-650 ml); low pressure (mean pressure at capacity 17 cm H2O no pressure waves in 50% of patients 30-50 cm H2O wide pressure waves with 250-ml threshold volume in 50%); absence of reflux; complete voiding by abdominal straining, and perineal relaxation.

Cystectomy↗
PubMed1990

[Neurogenic bladder caused by meningomyelocele in childhood: urodynamic pattern and treatment regimens].

The authors reviewed the records of 160 patients with neurogenic bladder secondary to myelomeningocele (MMC) treated at the Urology Department of the University of Padua during 1977-1988. All patients had been evaluated by excretory urography, urethrocystography and videocystomannometry (VCM). Urodynamic studies are fundamental in determining vesicosphincteric dysfunction and patients who are at high risk for early renal lesions. For this reason, the authors recommend urodynamic evaluation from the first year of the infant's life in order to institute treatment early. The therapeutic approach should aim at a) preserving renal function, b) achieving a socially acceptable degree of urinary continence, and c) protecting sexual function.

Adolescent↗
PubMed1988

The so-called Hoffman's lymphangitis of the penis: is it a lymphangitis or a phlebitis?

Hoffman's plastic lymphangitis of the penis is a benign, uncommon entity whose aetiology is still unknown. Microscopically there is a fibrous thickening of the involved lymph vessels but the primary localization of the lesion--lymphatic or venous--is still debated. Anatomo-clinical and histological findings suggest a primary involvement of the lymphatic system of the penis, probably related to a prolonged period of sexual excitement.

Adult↗
PubMed1986

Grading of the prostate carcinoma: cyto-histological correlations on 100 cases.

From January 1980 to December 1983, 154 patients underwent prostatic FNAB and histological control. The sensitivity of cytology was 85%, the specificity 68% and the predictive value of positive cases 83%. The cyto-histological correlation of the grading of the 100 prostatic carcinomas histologically confirmed (85 cytologically positive for carcinoma and 15 negative or uncertain) showed a predictive value of positive results of 58%, ranging from 42% for G3, 50% for G1 and 69% for G2. The usefulness of cytological grading is stressed to monitor the follow-up of those patients treated for prostatic carcinoma who, because of the advanced stage or age, were not surgically treated.

Biopsy, Needle↗
PubMed1977

Correlation of cell kinetic findings with morphology of non-Hodgkin's malignant lymphomas.

Kinetic studies were carried out on 6 benign and 37 malignant lymph nodes from patients with non-Hodgkin's malignant lymphomas (ML). The labeling index, DNA content, and cell distribution through the cell cycle were analyzed in the ML, which were classified according to the Kiel classification. Approximately 90% of the ML studied showed a clear diploidy; the only cases of polyploidy were limited to some centroblastic-centrocytic ML with more than 30% malignant centroblasts and to be single centroblastic ML. The labeling indexes ranged from 0.05 to 33%. No correlation was found between the proliferative rate and the degree of ploidy, while a grading of labeling index was found in relation to the three main DNA distribution patterns observed (i.e., G1 peak, S accumulation, and bimodal distribution through the cell cycle). From a kinetic point of view, the most heterogeneous groups were the lymphoplasmacytoid (subtype polymorphous) and centroblastic-centrocytic ML, where the degree of proliferation increased as the mixture of cell type (relative to the former group) and the malignant centroblastic component (relative to the latter group) increased.

Adolescent↗