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Biomedical subjects

G Perreault

Publications and source records attributed to G Perreault.

At least 37 records · Page 2Linked to original sources
PubMed1984

Acro-renal-ocular syndrome: autosomal dominant thumb hypoplasia, renal ectopia, and eye defect.

Seven individuals from 3 generations of a French-Canadian family had various combinations of acral, renal, and ocular defects. Acral anomalies varied from mild hypoplastic distal portion of the thumbs, with limited motion at IP joint, to severe thumb hypoplasia and preaxial polydactyly. Renal anomalies varied from mild malrotation to crossed renal ectopia without fusion; other urinary tract anomalies were vesicoureteral reflux and bladder diverticula. Ocular manifestations varied from complete eye coloboma, coloboma of the optic nerve, ptosis, and Duane anomaly. The syndrome seems to be an autosomal dominant trait with high penetrance and variable expressivity. Dermatoglyphics were abnormal; in addition to a triradius t' present in all, some also had various combinations of high TRC, thenar exit of A line, and rare patterns in interdigital area IV.

Abnormalities, Multiple↗
PubMed1984

Urinary tract infection in children. A reappraisal of its radiologic investigation.

In a prospective study, 100 children with either an acute or a previous history of urinary tract infection were investigated by intravenous urography, micturition cystourethrography, and ultrasonography. The results from the three diagnostic modalities were compared: The urinary tracts in 59 patients were normal, and revealed some abnormality in 41. Ultrasonography proved to be superior to intravenous urography in outlining renal contours and in detecting subtle cortical changes secondary to urinary tract infection (such as slight increases in cortical thickness and edema or cortical scarring). The mucosa of the renal pelvis and bladder was more easily assessed by ultrasound than by intravenous urography. Both modalities were "equally" accurate in detecting important congenital malformations of the urinary tract. Ultrasound failed to detect 24 of 28 ureters demonstrating reflux on voiding cystourethrography. We propose that carefully performed abdominal ultrasonography can replace intravenous urography in the initial investigation of urinary tract infection in children. It should be done in association with a radiographic or radionuclide voiding cystogram. Intravenous urography would then become a complementary examination for abnormal or problematic patients.

Adolescent↗
PubMed1984

[Echography of pyloric stenosis].

In order to assess the accuracy of ultrasonographic (US) criteria for the diagnosis of pyloric stenosis (PS), the record of 78 infants admitted to Hôpital Sainte-Justine with the clinical diagnosis of PS during the past year was reviewed. Fifty-eight patients had PS at laparatomy. Thirty-four of these had US with 30 true positives and four "doubtful" findings. Twenty-two had normal US. Two of these had PS, nine gastroesophageal reflux and five normal barium studies of the upper gastrointestinal tract (the last six were followed clinically and remained well). The following were criteria for US diagnosis of PS: pyloric anteroposterior diameter greater than or equal to 1.5 cm, length greater than or equal to 2 cm or a muscle thickness greater than or equal to 4 mm. This series contains no false positive US studies and two false negatives, for a positive predictive accuracy of 94% and a negative predictive accuracy of 100% when we measure the length greater than or equal to 2 cm or combine a length of less than or equal to 2 cm with a muscle thickness greater than or equal to 4 mm.

Female↗
PubMed1984

[Thoracic opacity in a newborn infant disclosing an adenomatoid cyst of the lung. Radio-echographic case].

In a preterm infant (28 week gestation), the chest film performed at 1 hour of life because of mild respiratory insufficiency showed a massive opacity of the right hemithorax. Congenital cystic adenomatoid malformation was suspected on the basis of ultrasonographic findings of multiple cysts. It was confirmed by further X ray examination and pathologic findings. This unusual case shows the ultrasonographic pattern and X ray evolution of this rare malformation.

Humans↗
PubMed1983

Undergraduate radiology clerkship: the Universite de Montreal program.

At the Université de Montréal, a four-week rotation in radiology is part of the core curriculum for students in their fifth and final year of medicine. The objective of this undergraduate radiology clerkship is to prepare the future physician to use efficiently the resources of radiology and nuclear medicine in patient care. Specific goals and methods used to achieve them are described and analysed.

Clinical Clerkship↗
PubMed1980

Neonatal necrotizing enterocolitis: the relation of age at the time of onset to prognosis.

A study was undertaken to evaluate the predisposing factors, age at the time of onset and prognosis of neonatal necrotizing enterocolitis in 62 patients treated in a neonatal intensive care unit during a 5-year period (1974-78). Because of a peak frequency during the first week of life, the cases were divided into those of early-onset illness (appearing within the first week of life) and those of late-onset illness (appearing after this week). The main differences between the two groups were in the age at the time of the first enteric feeding (1.6 +/- 0.9 d v. 40 +/- 2.4 d [mean +/- one standard deviation]; P less than 0.001) and the interval between this feeding and the onset of symptoms (3.0 +/- 1.5 d v. 10.6 +/- 6.0 d; P less than 0.01). Furthermore, the early-onset illness was more severe, more often necessitating surgical intervention and carrying a higher mortality, than the late-onset illness. Thus, this study demonstrates that there are two forms of neonatal necrotizing enterocolitis, differing in time of appearance after birth as well as in severity and prognosis.

Age Factors↗
PubMed1980

Pyeloplasty: to divert or not to divert?

The use of diversion in conjunction with pyeloplasty has been a matter of continuous debate for a number of years. In consequence the matter has been left to the urologist's individual preferences with no objective data to support these preferences. Herein the authors present an analysis of 105 pyeloplasties performed by four surgeons over a period of eighteen years with a view to determine the place and type of diversion in relation to the surgical technique used and the long-term effects of such diversion or abstinence thereof.

Adolescent↗
PubMed1980

Neonatal candidiasis: renal and pulmonary manifestations.

A description of three newborns with renal candidiasis and a review of 14 others suggest the following pathogenesis: antibiotic therapy in a premature baby with an intravascular catheter is followed by hematogenous renal spread, candiduria, and acute obstructive nephropathy by mycotic bezoars. The radiologic appearance is often characteristic. Prompt therapy is the only possibility for survival. Primary thoracic candidiasis occurs more frequently in the full term baby and is probably aspirated during birth. One patient is described and 20 cases from the literature are reviewed. The radiologic appearance is nonspecific.

Candidiasis↗
PubMed1979

[Renal and perinephritic abscesses in children].

One child with a pure perinephric abscess and three with renal abscesses, one of which had perinephric extension, are described. All presented with a long course of subacute infection leading to localizing symptoms or signs in the flank. The diagnosis was confirmed by radiologic examination. All the abscesses were surgically drained at various intervals after diagnosis, while the patients were receiving antibiotic therapy. Salvage of renal function was possible in all cases. A rational approach to the diagnosis and management of such abscesses is emphasized.

Abscess↗
PubMed1977

Acute epiglottitis in children: management of 27 consecutive cases with nasotracheal intubation, with special emphasis on anaesthetic considerations.

Twenty-seven consecutive cases of acute epiglottitis in children were treated by nasotracheal intubation during a 25-month period. The duration of intubation averaged 44.2 hours. No mortality or morbidity occurred. Mean hospitalization was 4.5 days. Anaesthetic techniques are discussed. Ketamine is a somewhat controversial choice for these patients as it can enhance excitement, restlessness, and accidental extubation. This study reconfirms the ease of maintaining an assured airway by nasotracheal intubation in cases of acute epiglottitis.

Age Factors↗
PubMed1976

A syndrome of generalized elastic fiber deficiency with leprechaunoid features: a distinct genetic disease with an autosomal recessive mode of inheritance.

Three male infants with generalized elastolysis and leprechaunoid features from two related and consanguineous parents of Italian origin died in the first year of life following severe cardio-pulmonary complications. While these children showed a decrease in elastic fibers, no degeneration was noted and histochemical as well as systemic metabolic studies were negative. It is postulated that this disease is a variant of cutis laxa or at least that the absence of granular degeneration of the elastic fibers described by Goltz is a secondary manifestation present only in older children. Prenatal diagnosis of this syndrome is not yet possible since no intracellular or biochemical changes have been identified. In view of the familial occurrence of this syndrome, and the association of specific clinical and pathological findings, we suggest that we are dealing with a distinct hereditary disorder of the connective tissue.

Abnormalities, Multiple↗
PubMed1976

Heterogeneity in the campomelic syndromes. Long-and short-bone varieties.

Analysis of 9 cases of bilateral bent limbs (campomelia) and dwarfism, as well as a review of the literature, indicate that campomelic syndrome appears to be a well-defined distinct disorder which the authors call long-limbed campomelic syndrome. Other neonates with congenital bent-limbed dwarfism can be classified as having short-limbed campomelic syndrome, and among these at least two distinct forms have been delineated--the craniosynostotic and the normocephalic form. Congenital bent bones also occur in a variety of generalized disorders of ossification that must be distinguished from these well-defined types of campomelic dwarfism.

Abnormalities, Multiple↗