4 months after implantation of PGLA in the rabbit auricular cartilage very good macroscopic and histological results were achieved.

The abscess of parapharyngeal space is very dangerous health condition graving numerous complications such as: jugular vein thrombosis, mediastinitis, arterial bleeding. This state originates most frequent during the acute pharyngitis, and especially acute tonsillitis. The aim of our study was to review the clinical sings, computed tomography scans and outcome of parapharyngeal space infection. 3 patients treatment in our Department were underwent surgical drainage and aggressive antibiotic therapy. One patient was treated solely with intravenous antibiotic therapy. The average time of hospitalization was 16 days. No one complication was observed.

The histological and macroscopic examinations indicated that both materials developed in this study have properties similar to cartilaginous tissue and seem to be good for her restoration. Although the quickest tissue regeneration was found after implantation of PLG-Hyal.

The results showed that carbon fibers undergo progressively degradation in animal environment. The width gradually decreased. The mean grey level in the first three weeks decreased, but in the next period it increased. Conclusion. The carbon fibers of segmental tracheal prosthesis undergo gradually degradation process in biological environment expressed by decreasing of their dimensions connected with the lost of irregularities and changes of structure density.

In the allergy-related patients high rate of recurrence after the FESS treatment is stated in the long term observations.