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Os tumores vesicais ocorrem mais frequentemente entre a quinta e setima decadas de vida, sendo raros antes dos 40 anos de idade. O rabdomiossarcoma e um tumor embrionario raro originado do tecido muscular esqueletico, que, quando localizado no trato geniturinario, se manifesta com hematuria e sintomas urinarios obstrutivos. E um tumor que acomete principalmente a faixa etaria infantil. Por se tratar de um tumor muito agressivo geralmente necessita de tratamento cirurgico, com resseccoes parciais e ate mesmo remocao completa de grande parte do trato geniturinario baixo. Sera relatado um caso de rabdomiossarcoma vesical em crianca de 5 anos, cujo tratamento sem cirurgia foi curativo e que com acompanhamento a longo prazo nao houve recorrencia tumoral. Palavras chaves : Bexiga, rabdomiossarcoma, tratamento conservador ABSTRACT The bladder tumors occur most often between the fifth and seventh decades of life, being rare before forty. The embryonal rhabdomyosarcoma is a rare tumor originating from the skeletal muscle tissue, which, when located in the genitourinary tract, manifested with haematuria and urinary obstruction. This tumor is more common in the childhood. It’s a very aggressive tumor and usually requires surgical treatment which partial resection and even the complete removal of much of the lower urinary tract. This is a report of one case of bladder rhabdomyosarcoma in a 5 years old child, whose treatment was curative without surgery, and in the long-term following there was no tumor recurrence. Keyword s: Bladder, rhabdomyosarcoma, conservative treatment

In earlier papers we described the gas chromatographic determination of mono- and di-esters of estradiol and estrone esters in oil solutions at a low concentration level (2 mg/ml). In this case a preliminary separation by means of quantitative thin-layer chromatography was necessary in order to separate the steroids from the oil. In order to make the separation step simpler and more generally applicable, we experimented with the partition between hexane and 85% ethanol, and obtained a steroid fraction suitable for gas chromatographic analysis. The present method has been applied to oil solutions of steroids which we representative of the anabolic, androgenic, estrogenic and progestational classes, at concentration levels between 10 and 50 mg/ml; precision and accuracy values for each experiment are reported. The procedure is simple, rapid and suitable for multisample analysis.

A method is described for the fractionation of neutral lipids into classes by means of silicic acid column chromatography. Elution is performed with a concave gradient of ethyl ether in petroleum ether; the gradient is achieved by means of two metering pumps. This gradient is simple to obtain and can be easily modified for different requirements following our scheme of calculation. The effluent is monitored continuously by means of a hydrogen flame ionisation detector, a part of the effluent being continuously drawn off. Our method can be used for analytical purposes as well as for isolation of pure lipidic fractions. The quantitative analysis of the components of a lipid mixture is performed following a weighing microtechnique, using a Cahn electrobalance. Examples are reported of the separation of reference lipid mixtures of oils and tissue lipids and of oil solutions of steroids for pharmaceutical use. Our method is also useful for detecting lipidic contaminants in solvents and materials for chromatography. The necessity of very carefully controlled solvents and materials to avoid contamination is underlined.

Copia digital. España : Ministerio de Cultura y Deporte. Subdirección General de Coordinación Bibliotecaria, 2020

Copia digital. España : Ministerio de Cultura y Deporte. Subdirección General de Coordinación Bibliotecaria, 2020

Titelseite in Rotschwarzdruck; Druckermarke, von R.P. Bernardo Hipper ...