Biomedical subjects
Publications and source records attributed to J I Benito.
The unilateral abscess of the anterior portion of the tongue is an extremely rare occurrence. We report a case in which we have used the ultrasonography in the diagnosis, and discuss, as etiologic hypothesis the participation of Blandin-Nühn glands in the genesis of these abscess.
A case of nasopharyngeal fibrous diaphragm of unknown origin is reported. In view of the scarcity of publications about this disorder, this new case is interesting. A differential diagnosis is made with choanal atresia and nasopharyngeal stenosis. Aspects of the etiology, clinical manifestations, and treatment are discussed.
The AA. having had the opportunity to diagnose and treat one of those cases, of low degree, sitting in the nasal cavity, discuss about its classification either in the nose or in the sinuses. Their opinion is coincidental with that of other reporters regarding to the complexity and varieties of a grouping system. They propose an other one, not original at all, but having perhaps the advantage that could make easier the comprehension and the clinical orientation when dealing with these growths.
This is a new method devised by the AA. in order to produce a laboratory experimental acoustic trauma, using a recorded noise. So it is possible to produce at will a noise strong enough to provoke a cochlear damage with the rythm, the frequency spectrum and duration chosen.
The protocol developed at our hospital for auditory assessment of children with risk factors for deafness is presented. The results obtained with tympanometry and auditory brainstem response (ABR) audiometry from October 1994 to March 1998 were analyzed. In 122 children, 17 cases (14%) of severe-to-profound bilateral deafness were found. Only 50% of these cases were associated with risk factors present at birth. The average age at time of diagnosis of deafness was over 3 years. In view of these results, we recommend auditory screening for all newborns as the only effective procedure for early detection of childhood deafness.
Tumours of the deep lobe, the section of the parotid located within the plane of the facial nerve, are not very frequent. Their diagnosis is difficult and seldom early, and their treatment involves complex technical problems. They evolve in one of two forms: as a tumour of the parapharyngeal space, or as a "dumb-bell" tumour with protrusion in the preauricular zone. Typical cases of both topographical possibilities are presented in this paper.
Adult guinea pigs (250-500 g) were exposed to a chronic wide-band noise, at intensities ranging from 117 to 133 dB(A) at different times. While the first part of this paper concentrated on the surface study of the lesions produced by noise, this second part describes to correlating deep structural damage, based on the study of semi-thin and ultra-thin sections in the same specimen. Finally, a general discussion is presented with respect to the lesions described, both in so far as their specific characteristics as well as the possible mechanisms of damage which determine their formation.
A total of 40 guinea pigs have been used: in 5 a general anatomical dissection of the temporal bone was utilized; in another 5 guinea pigs a submandibular approach was performed; and in the remaining 30 a superior approach was employed. The submandibular approach begins with an incision of 30 mm inside of and parallel to the inferior border of the mandible , identifying the masseter muscle, the salivary gland, the thymus and posterior belly of the digastric muscle and, finally, the tympanic bulla. In the superior approach a horizontal supra-auricular incision of 15 mm is used which, after dissecting the temporal muscle, permits the access to the external wall of the epitympanum.
Adult guinea pigs (250-500 g) were exposed to a chronic wide-band noise, at intensities ranging from 117 and 133 dB(A) at different times. The objective of this first part of the study is, after the lesions are established, to classify and put into order the structural damage produced by noise, using surface preparations observed with the light microscope and specimens prepared for scanning electron microscopy, from the organ of Corti.
We present an up-dating of the problem of naso-paranasal infection by different types of aspergillus fungi, attempting to establish clearly the various nosological entities produced by this infectious agent. The principal focus of this paper is the typical presentation of the pseudotumoral form of invasion, or aspergilloma of the ethmoid sinus, in which we studied the following: the vicissitudes involved in diagnosis, the clinical picture and the therapeutic possibilities.
Cervical emphysema may have its origin in multiple causes. The continuity of the fascial planes connecting the soft tissues of the neck to the mediatinum and retroperitoneum enables the "aberrant air" localized in one of these three areas to spread to the other ones. The otolaryngologist must know the differential diagnosis of the presence of air in the neck, since the ultimate treatment to be given will depend on the etiology involved. We present two clinical cases of cervical emphysema secondary to spontaneous pneumomediastinum. One of the cases is idiopathic while the other one is associated with diabetic ketoacidosis. We analyze this and other causes that can give rise to cervical emphysema.
A descriptive study was made of medical and surgical activity over a six-month period in an outpatient ENT clinic of Valladolid, Spain, serving a health district of 142,779 persons. Age, sex, type of consultation, symptoms, complementary studies, diagnosis, check-up, and surgical treatment were analyzed and correlated in 1170 patients.
The histologic features of undifferentiated carcinoma of the base of the tongue and lymphoepithelioma, or lymphoepithelial carcinoma, of the nasopharynx are identical and can be considered synonymous. The frequency of undifferentiated nasopharyngeal carcinoma (lymphoepithelioma) located on the base of the tongue is discussed because undifferentiated carcinoma of the base of the tongue is considered to be the same tumor.
Cholesterol granuloma is a histological term used to describe a non-specific inflammatory reaction produced by the presence of cholesterol crystals, which may originate a foreign-body reaction. Cholesterol granuloma of the temporal bone is silent for years and not preceded by a history of otitis media. The diagnosis is made by CT and MRI, which reveal an expansive, isodense lesion brain tissue and increased signal intensity on both T1 and T2-weighted images respectively. A case of cholesterol granuloma of the petrous apex is presented. The granuloma was excised completely using an infra-retrolabyrinthine approach.