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Biomedical subjects

A Chagnon

Publications and source records attributed to A Chagnon.

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

[Giant esophageal fibrovascular polyp. Apropos of a case].

Fibrovascular polyps, together with leiomyomas, constitute the great majority of rare benign tumors of the oesophagus. Their size and their frequently high level of attachment sometimes give them a spectacular clinical presentation. The hazards involved in the interpretation of radiological and endoscopic data account for frequent mistakes in their diagnosis. The determination of the pedicle site defines the choice of the surgical approach. A diagnostic error and the choice of an incorrect approach are the two main causes of therapeutic difficulties.

Aged↗
PubMed1991

[Acute renal insufficiency revealing an IgA nephropathy].

The authors report a case of non-reversing acute renal failure following a carbon monoxide poisoning in a 28-year-old woman with a previous history of pyelonephritis. The renal biopsy reveals an IgA nephropathy with interstitial and tubular changes. The mechanism of this exceptional complication is discussed.

Acute Kidney Injury↗
PubMed1990

[Giant esophageal fibrovascular polyp. Apropos of a case].

Fibrovascular polyps, together with eleiomyomas, constitute the great majority of rare benign tumors of the oesophagus. Their size and their frequently high level of attachment sometimes give them a spectacular clinical presentation. The hazards involved in the interpretation of radiological and endoscopic data account for frequent mistakes in their diagnosis. The determination of the pedicle site defines the choice of the surgical approach. A diagnostic error and the choice of an incorrect approach are the two main causes of therapeutic difficulties.

Aged↗
PubMed1989

[Intraocular pressure during vitrectomy in the diabetic patient].

23 eyes underwent vitrectomy for diabetic proliferative retinopathy complications: vitreous hemorrhage with or without tractional retinal detachment. After 6 months of follow-up, 64% of eyes had final visual acuities of 1/40 or better. Preoperative iris neovascularization and preoperative detachment of the macula have a worse prognosis. Decrease of peroperative complications is allowed by checking of intraocular pressure during vitrectomy.

Adolescent↗
PubMed1989

[Intraocular pressure during vitrectomy in diabetic patients].

23 eyes underwent vitrectomy for diabetic proliferative retinopathy complications: vitreous hemorrhage with or without tractional retinal detachment. After 6 months of follow-up, 64% of eyes had final visual acuities of 1/40 or better. Preoperative iris neovascularization and preoperative detachment of the macula have a worse prognosis. Decrease of peroperative complications is allowed by checking of intraocular pressure during vitrectomy.

Adolescent↗
PubMed1989

[Photographic study of retinal nerve fibers in glaucoma and ocular hypertension].

Photographic study of retinal nerve fiber (RNF) in glaucoma and ocular hypertension. Photographic study of retinal nerve fiber layer try to show defects in case of glaucoma or ocular hypertension. After describing the method used and the different aspects met, we present the results of confrontation between the exam and campimetry for 49 eyes, with control of the evolution for 30 eyes during an average time of thirty months.

Atrophy↗
PubMed1989

[Deficits of the layer of retinal nerve fibers and glaucoma. Comparison with campimetry and control of the course].

Photographic study of retinal nerve fiber layer try to show early defects in case of glaucoma or ocular hypertension. Among the recent techniques trying to indicate the first marks of glaucoma, this method appears easy, reproducible, objective, and uses a very common equipment. We describe the equipment and the technic used, and present the main physiological and pathological aspects. Our series includes 49 eyes (30 patients) and, for 30 among them (17 patients), a control of the evolution has been done within an average period of thirty months. In each case, visual field was studied, principally with the programs of early detection of glaucomatous damage available on the Octopus 2000 R (prog. No 31, 33 and G1). We explore and comment upon the results obtained by the confrontation between these exams.

Adolescent↗