Biomedical subjects

B Arellano

Publications and source records attributed to B Arellano.

23 records · Page 2Linked to original sources

PubMedDate not supplied

[Synthetic implants in the reconstruction of the ossicular chain].

Experience has revealed a higher rate of functional failure of biocompatible prostheses used in the surgical reconstruction of the middle ear than was reported initially. The cause of these failures was analyzed in a retrospective study of 135 patients who underwent middle ear reconstructive procedures: 47 of them involved implantation of plastic prostheses. Proplast or Plastipore, and had a sufficient follow-up. We evaluated the prosthetic material and middle-ear conditions for which they were implanted.

Cerebrospinal Fluid Otorrhea↗

PubMedDate not supplied

[Effectiveness of imaging diagnosis in chronic otitis media].

The value of imaging methods for the diagnosis of different forms of chronic otitis media is debated, in spite of widespread use. A retrospective study was made of 50 patients who underwent tympanoplasty, with or without mastoidectomy, in our department. Otoscopic, radiological, and computed tomographic findings were analyzed and correlated statistically with surgical findings. Attic perforation was associated significantly with presence of cholesteatoma. Computed tomography was inadequate for differentiating forms of chronic otitis media.

Cholesteatoma↗

PubMedDate not supplied

[Tympanomastoid glomus tumor and persistent stapedial artery].

A case of tympanic glomic tumor associated with vascular malformation of the perifacial plexus is reported. The case and its possible relation with persistent stapedial artery are discussed. The embryological development of the middle-ear vessels and blood supply to glomic tumors were reviewed.

Arteriovenous Malformations↗

PubMedDate not supplied

[Experimental autoimmune labyrinthitis: evaluation of various models in guinea pigs].

Evidence of hearing loss in humans with systemic autoimmune disease has suggested the possibility of isolated forms of deafness originated by a autoimmune mechanism. Several authors reject McCabe's (1) proposed clinical description based mainly on response to treatment and have attempted to develop an animal model of autoimmune deafness. A comparative analysis was made of several experimental models of sensorineural hearing loss in guinea pigs developed in our laboratory for the study of this problem.

Animals↗

PubMedDate not supplied

[Oncologic surgery of the larynx after failure of radiotherapy].

The treatment of early-stage laryngeal cancer using either partial surgical techniques or irradiation still is controversial. The performance of rescue surgical procedures after irradiation is related to increased postsurgical complications and lower survival rates. We made a retrospective study of 73 patients who underwent rescue surgery after failure of radiotherapy in our department in the last 10 years. A statistical analysis was made of the complications and survival rate of these patients in accordance with tumor location and clinicopathological stage compared with patients who underwent surgery alone (n = 435). More rescue surgery was performed for glottic carcinomas (52/73) than for supraglottic carcinomas (21/73). No significant differences were found in the complication rate (23.6%) compared with the control group (19.6%). There was a significant reduction in survival in patients who underwent previous irradiation of supraglottic tumors compared with glottic tumors and the control group. In view of these results, we conclude that irradiation is not a good option as an initial treatment for supraglottic tumors and that the procedure of choice should be surgical.

Adult↗