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Biomedical subjects

P Alemany

Publications and source records attributed to P Alemany.

15 recordsLinked to original sources
PubMed1996

Diverticulum of the left ventricle associated with subvalvar aortic stenosis.

Diverticula of the left ventricle are rare and only a few cases have been documented in adults. They may be asymptomatic or may present with embolization, pain, endocarditis, or sudden death. We report the case of a 34-year-old woman who presented a cardiac arrest with ventricular fibrillation which required electrical cardioversion. She was found to have a left ventricular diverticulum associated with a subvalvar aortic stenosis. The diverticulum arose from the apex with a narrow connection to the ventricular cavity. A subvalvar fibrous ridge stenosis with a systolic pressure gradient of 115 mmHg was observed. Coronary angiography revealed normal coronary arteries. The diverticulum and the subvalvar fibrous ridge were resected. Histologic examination of the diverticulum wall demonstrated the presence of the three normal layers with marked muscle cell hypertrophy, atypical plexiform structure and fibrous endocardium. The pathophysioloy of diverticula associated with subvalvar aortic stenosis are discussed.

Adult↗
PubMed1994

Lymphoepithelial-like carcinoma of the uterine cervix. Study of a case with in situ hybridization of the Epstein-Barr virus genome and the human papillomavirus genome.

Lymphoepithelial-like carcinoma of the uterine cervix is very rare in Caucasian women. We present a new case in a 74 year-old European. Morphologically the undifferentiated carcinoma was accompanied by intense lymphocytic infiltration. Immunohistochemically the tumor expressed epithelial markers such as cytokeratin CAM 5.2, and a large proportion of cells expressed the proliferating cell nuclear antigen. The accompanying lymphocytic reaction was composed predominantly of T-lymphocytes which express the UCHL1 antigen. The in situ hybridization of the Epstein-Barr virus genome and the human papillomavirus proved negative.

Aged↗
PubMed1992

[Granular cell tumor (Abrikossoff's tumor). A review and our experience].

The low incidence of these tumors compelled the AA., after diagnosis of one of laryngeal sitting, to a review of the theme and its literature as well, particularly under the viewpoint of its histogenesis, which has been debatable up to lately. The report is complemented with the study of immunohistochemical tests for NHK, S-100 and specific neural enolase of the specimen.

Adult↗
PubMed1991

[Wegener's granulomatosis. Apropos of a new case and review of the literature].

A case of Wegener's granulomatosis (WG) is presented, high-lighting the long-term evolution of affliction of the upper airways without diagnosis, as well as the rapid evolution after detection of the rest of the compounds of the syndrome. We show the difficulties in making a differential diagnosis and the clinical improvement with immunosuppressor treatment.

Adult↗
PubMedDate not supplied

[Low-residue diets supplemented with fermentable fiber. Effect on experimental colonic anastomosis].

Presentation of an experimental study comparing the scarring of colic anastomoses performed in Wistar rats fed with three different types of diet: a standard laboratory diet, an enteral low-residue diet and a low-residue diet supplemented with fermentable fibre in short chain fatty acids (pectin). Scarring in the group fed with the standard laboratory diet showed greater anastomotic complications, and the microscopic appearance was more inflamed. The administration of low-residue diets reduced the level of complications, but also reduced the concentration of collagen and the parietal rupture tension. The addition of pectin to a low-residue diet maintained the complications at a low level, and also significantly increased the pressure parameters and the collagen concentration.

Anastomosis, Surgical↗
PubMedDate not supplied

[Brain stem auditory evoked potentials in rabbits with hereditary glaucoma associated with hearing loss: morphofunctional correlations].

32 rabbits suffering from simple hereditary glaucoma were studied from the ophthalmological, otological and histopathological point of view. Gonioscopy, tonometry, ophthalmo- and retinography, otoscopy, tympanometry, ABR and the corresponding histopathological studies of the eye and of the cochlea were performed. The simple hereditary glaucoma seems to be causally related with concomitant hearing loss due to congenital endolymphatic hydrops. Further studies are planed.

Acoustic Impedance Tests↗
PubMedDate not supplied

[Brainstem auditory evoked potentials (BAEP) in the rabbit. Normal patterns].

Brain stem auditory evoked potentials using skin electrodes have been studied in rabbits. The obtained records are integrated by 6 consecutive waves ranging up to 10 ms. of latency time. The most important, constant and well-performed waves were the I, II and IV waves, which persist until the auditory threshold by 10 dB. The obtained results in 50 ears have been statistically treated. Subsequently, a normal pattern of the BAEP in rabbits has been performed as a base for upcoming papers.

Animals↗
PubMedDate not supplied

[Retinoblastoma: morphologic, ultrastructural and scanning electron microscopy study].

We present a clinical and morphological study of one case of unilateral Retinoblastoma in a boy two years of age. There were no family antecedents. Cellular morphology and histological organization were studied with particular reference to rosettes and the angiogenic capacity of the tumor. Scanning electron microscopy permitted the definition of the surface organization and infiltration pattern together with tridimensional characteristics of the Rosettes. We also discuss the neuroectodermal origin of the neoplasm.

Child, Preschool↗