Biomedical subjects
Publications and source records attributed to A C Stamm.
We report one case of peripheral trigeminal schwannoma originated from the mandibular branch (V3) and located inside the infratemporal and pterygopalatine fossae with slight intracranial extension. The tumor was completely removed by a transmaxillary approach. The revision of the literature showed to be a very rare tumor in this location.
A brief review of surgery for severe posterior epistaxis has been outlined. Hundred and forty-five (27.3%) patients were treated by transnasal microsurgery in order to undergo ligation of the branches of the sphenopalatine artery in the nasal cavity. The rate of failure was 6.1%. It seems that by using this kind of operation, we can significantly decrease the morbidity in relation to other methods of controlling the posterior epistaxis.
Three cases of an unusual form of suppurative chronic otitis media in children 2 and 3 years old are presented. The clinical feature common to all cases was otorrhea, beginning at the first months of life, with a silent evolution to a complete peripheral facial paralysis. In one case the facial paralysis was bilateral. The treatment applied was surgical: subtotal petrosectomy. The surgical findings were bloody granulation tissue, sequestering completely the otic capsule. The facial nerve was destroyed almost the total length of the Fallopian canal in all cases. The histopathologic examination revealed a destructive and nonspecific chronic inflammatory process. The culture showed Gram-negative organisms, such as Pseudomonas aeruginosa and Proteus mirabilis. Etiologic aspects involved in the process are discussed and the name non-specific necrotizing petrositis is suggested to individualize this rare form of otitis which, with morbidity, leads to severe complications such as facial paralysis and deafness.
Choanal atresia is a congenital malformation of the posterior portion of the nasal cavity, which is usually unilateral. The incidence is estimated to be 1 in 5,000 to 8,000 live births. Several surgical approaches have been described to correct choanal atresia since Emmert's initial trocar perforation in 1853, including transnasal, transpalatal, transseptal, sublabial transseptal, transantral, and external rhinoplasty. Although the micro-endoscopic transnasal access is a more conservative technique, it allows greater surgical precision, and is currently recommended by many authors; choanal atresia repair is still considered a challenge, with risks of intraoperative and postoperative complications and re-stenosis. This paper reports the results of a series of 33 patients operated via the transnasal micro-endoscopic surgical approach, and describes a new endoscopic technique that the authors call "nasal septal crossover flap technique."