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Biomedical subjects

R Filion

Publications and source records attributed to R Filion.

12 recordsLinked to original sources
PubMed1986

Renal cell carcinoma presenting as multilocular cystic mass.

We report a case of a multilocular cystic mass that was erroneously labeled multilocular cystic nephroma at ultrasound and computerized tomography, thus leading to a partial nephrectomy; however the final histologic diagnosis was a multilocular cystic renal cell carcinoma. Only 1 similar case has been reported previously. The radiologic and surgical implications are discussed.

Carcinoma, Renal Cell↗
PubMed1986

Urinary tract dilatation in utero: classification and clinical applications.

A morphologic classification of in utero urinary tract dilatation is presented. Ninety-two hydronephrotic fetal kidneys diagnosed with ultrasound were graded according to the proposed classification. The findings suggest that grade I dilatation (anteroposterior diameter of the renal pelvis less than 10 mm) should be considered normal. Grades II and III constitute an intermediate hydronephrosis, requiring postnatal urologic surgery in nearly half the cases. Grade IV (moderate dilatation of the calyces, with easily identified residual renal cortex) and grade V (severe dilatation of the calyces with atrophic cortex) are clearly pathologic and require neonatal corrective surgery. It is hoped that use of this simple and practical classification will facilitate communication and comparison of results in the literature.

Dilatation, Pathologic↗
PubMed1986

Ureteropelvic junction stenosis: antenatal ultrasonographic diagnosis, postnatal investigation, and follow-up.

Between January 1981 and October 1984, the diagnosis of ureteropelvic junction (UPJ) stenosis was suspected in 39 fetuses after routine obstetrical ultrasound (US) examination. Postnatal investigation revealed that the initial diagnosis had been accurate in 30 cases (77%). There were 35 UPJ stenoses in 30 patients. The degree of dilatation of the renal pelvis (grades III, IV, or V) observed postnatally with sonography as well as the obstructive excretory pattern noted by renal isotope scanning were used as criteria to determine the need for early postnatal pyeloplasty (performed in 25 patients), which relieved the obstruction and, in the majority of patients, improved renal structure and function.

Diuresis↗
PubMed1977

[Necrotic enteritis in broiler chickens. III. Study of the factors favoring the multiplication of Clostridium perfringens and the experimental transmission of the disease].

Necrotic enteritis was reproduced experimentally in two week old broiler chickens by intravenous injection and also by oral administration of a pure culture of Clostridium perfringens. In the first experiment, gross and microscopic intestinal lesions, typical of necrotic enteritis, were observed in all diseased birds and mortality was obtained only in the group of birds that were injected with 0.4 ml or more of the pure culture of the microorganism. In the second experiment, the highest mortality was noted in the group of birds that received orally, in addition to the Clostridium culture, a solution of sodium bicarbonate, to obtain an alkaline intestinal content and opium to decrease the intestinal peristaltism. The gross and microscopie intestinal lesions of the diseased and killed birds were more severe than those observed in the other groups and were similar to those encountered in field outbreaks of necrotic enteritis.

Animals↗
PubMed1974

[Necrotic enteritis in broilers. I. Clinoco-pathological aspect].

This study represents an analysis of the principal clinical factors and pathological lesions of 150 cases of necrotic enteritis encountered during 1968 and 1969 in Quebec. Following multiple investigations no common factor was observed which might have explained the pathogenesis of the condition which was observed during every month of the year, especially from May to November. Birds two to four weeks of age were the most susceptible. The main lesion was a fibrino-necrotic enteritis always localized in the small intestine, either in its entire length or just a segment and characterized by the disappearance of the surface epithelium and necrosis of the villi. The lumen was filled with desquamated epithelial cells and bacteria. Foci of coagulation necrosis were observed in the liver and foci of nephrosis in the kidneys. A Gram+ bacillus, strictly anaerobic, was always isolated from the viscera.

Animals↗
PubMed1974

[Necrotic enteritis in broilers. II. Characteristics of the strains of Clostridium perfringens isolated].

A Gram positive bacillus, strictly anaerobic, was isolated from the viscera of all diseased birds showing lesions of necrotic enteritis. Its morphology and biochemical reactions, the presence of alpha and thêta hemolysins and the production of a lecithinase-C in vitro, all these characteristics indicated a similarity to those belonging to the group of Clostridium perfringens. The two hemolysins were neutralized in vitro only by the antitoxin A. Broiler chickens injected I.V. with a Viande-Foie (VF) broth culture of Clostridium perfringens together with the antitoxin A survived, whereas those receiving antitoxin C died. These results seem to indicate that this organism belongs to the type A. This bacillus was sensitive to a great variety of antibiotics, except neomycin.

Animals↗
PubMed1969

[Toxicity and immunosuppressive effect of sulfaquinoxaline in chickens].

Secondary effects of sulfaquinoxaline have been studied by comparing specific antibody titres of treated birds with the titres of those birds which were not treated. Previously these birds had been immunized by intramuscular injections of a killed antigen of S. pullorum, standard strain, and S. pullorum, variant strain. This experiment demonstrated that this drug possesses an immuno-suppressing action. This secondary effect was confirmed by an experimental infection with the GB strain of Newcastle disease virus.

Animals↗