Allochthonous bioaugmentation in ex situ treatment of crude oil-polluted sediments in the presence of an effective degrading indigenous microbiome.

Oil-polluted sediment bioremediation depends on both physicochemical and biological parameters, but the effect of the latter cannot be evaluated without the optimization of the former. We aimed in optimizing the physicochemical parameters related to biodegradation by applying an ex-situ landfarming set-up combined with biostimulation to oil-polluted sediment, in order to determine the added effect of bioaugmentation by four allochthonous oil-degrading bacterial consortia in relation to the degradation efficiency of the indigenous community. We monitored hydrocarbon degradation, sediment ecotoxicity and hydrolytic activity, bacterial population sizes and bacterial community dynamics, characterizing the dominant taxa through time and at each treatment. We observed no significant differences in total degradation, but increased ecotoxicity between the different treatments receiving both biostimulation and bioaugmentation and the biostimulated-only control. Moreover, the added allochthonous bacteria quickly perished and were rarely detected, their addition inducing minimal shifts in community structure although it altered the distribution of the residual hydrocarbons in two treatments. Therefore, we concluded that biodegradation was mostly performed by the autochthonous populations while bioaugmentation, in contrast to biostimulation, did not enhance the remediation process. Our results indicate that when environmental conditions are optimized, the indigenous microbiome at a polluted site will likely outperform any allochthonous consortium.

[Leiomyoblastoma of the prostate. Presentation of a case]. / Il leiomioblastoma della prostata. Presentazione di un caso.

The Authors report a case of leiomyoma of the prostate. It's a relatively rare neoplasm and although usually benign, malignant changes have been noted.

[Functioning and non-functioning tumors of the adrenal gland. Presentation of 4 cases]. / Tumori funzionanti e non funzionanti del surrene. Presentazione di quattro casi.

The Authors describe their own experience of functioning and nonfunctioning tumors of the adrenal gland. In two cases the neoplasm was an adrenal adenoma, one causing a Cushing syndrome, the other clinically asymptomatic and associated with renal tuberculosis. In two patients the neoplasm was a clinically unsuspected pheochromocytoma and in one case it proved to be a malignant tumor.

Metastases of the ureteral stump and bladder from renal cell carcinoma: report of a case.

The case of a 56 year-old male patient with asynchronous isolated metastases to the ureteral stump and bladder from renal cell carcinoma is presented. Ureteral metastasis was discovered 2 years after nephrectomy. Cystoscopy and MRI were performed. An excision of the ureteral stump with a cuff of bladder was carried out. No other metastasis was observed. Six months later a transurethral resection was performed on account of metastasis of the right wall of the bladder. Pathological examination demonstrated a renal cell carcinoma metastasis. After 6 months a new vesical metastasis from renal cell carcinoma was found. The small nodule of the lower part of the right wall of the bladder was removed. The literature is reviewed and the presentation, metastatic pathways, management of ureteral stump and bladder metastases from renal cell carcinoma are discussed.