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Biomedical subjects

F P Schwerdtfeger

Publications and source records attributed to F P Schwerdtfeger.

8 recordsLinked to original sources
PubMed2004

Myxoma of the lateral skull base: clinical features and management.

OBJECTIVE: To evaluate the clinical features and incidence of true myxomas affecting the lateral skull base. MATERIAL AND METHODS: Illustrative case report and review of the relevant literature. Included are all reports of myxomas according to the histopathologic definition of Stout. RESULTS: Despite nine case reports, only four patients matched the histopathologic criteria of a true myxoma growing in the lateral skull base. Facial palsy occurred in three adults with additional otalgia in one and progressive hearing loss (HL) in another patient. Our patient initially presented with signs of recurrent otitis media. The mastoid cavity was involved in all patients. CONCLUSION: Differential diagnosis of lesions occurring in the lateral skull base should include true myxoma. Correct diagnosis should be based on immunohistopathology to rule out malignant tumors. Radical surgery is the treatment of choice, but surgeons should respect vital structures and esthetic consequences.

Adult↗
PubMed2001

[Voice restoration with voice prosthesis after total laryngectomy. Assessment of survival time of 378 Provox-1, Provox-2 and Blom-Singer voice prosthesis].

UNLABELLED: Voice Restoration with Voice Prosthesis after Total Laryngectomy. Assessment of Survival Time of 378 Provox-1, Provox-2 and Blom-Singer Voice Prosthesis. BACKGROUND: Indwelling voice prosthesis are used in Trier for voice restoration after total laryngectomy since 1991. OBJECTIVE AND METHOD: To assess the voice prosthesis survival times the patients of the years 1993-1999 are assessed retrospectively. PARTICIPANTS: 58 patients provided with indwelling voice prosthesis were seen regularly at follow-up. 378 prosthesis were changed. Provox 1, Provox 2 and Blom-Singer-Prostheses were used. RESULTS: The average survival lifetime of the prosthesis was 224 days for Provox-1, 96 days for Provox-2 and 107 days for Blom-Singer respectively. There is no significant difference found between Provox-2 and Blom-Singer Prosthesis. The survival times of the Provox-1 Prosthesis is significant longer. CONCLUSION: Using indwelling voice prosthesis for voice restoration after total laryngectomy an average survival time of the prosthesis of three months can be expected. There are relevant individual differences. Provox-1 Prosthesis have a significantly longer survival time, but as they are more difficult to handle they are not suitable for routine use. The indication for the choice between Blom-Singer or Provox-2 Prosthesis should be influenced by the surgeons' experience.

Adult↗
PubMed1991

[Treatment results following supraglottic laryngectomy in carcinoma of the oropharynx, base of the tongue and hypopharynx. 1. Indication limits of supraglottic laryngectomy].

The indications are exactly fixed and critically screened in 110 cases of supraglottic laryngectomy. Comparison with more radical surgical methods yields the same results with functional advantages of supraglottic laryngectomy. The limitations of resection are: the foramen coecum at the base of tongue, the arytenoids and the vocal cord at the entrance of the larynx, the piriform recessus in cases of extension to the hypopharynx.

Aged↗
PubMed1991

[Treatment results after supraglottic partial resection of the larynx in carcinoma of the laryngeal entrance, the base of the tongue and hypopharynx. 2. Radiotherapy and late results after combined surgical-radiological treatment].

110 Patients were followed-up after supraglottic laryngectomy: The 3-year survival rate was 74%. The overall 5-year survival rate was 49%. For the cases of T3-tumours from these of the entrance of the larynx the 5-year survival rate was about 73%. For the T4-tumours the 5-year survival rate was only about 22%. Better results are not possible at the present even if other kinds of therapy are used.

Cobalt Radioisotopes↗
PubMed1990

[Long-term study following frontolateral partial larynx resection].

Between 1972 and 1981 frontolateral laryngectomy was performed in 72 cases of vocal cord cancer. Regular follow-up examinations were performed over a period of at least five and up to 15 years after primary surgery. In 1987, 63 of these patients were still alive. In 68 out of 72 (94.3%), survival time was three years or more. In 34 out of 43 (79%), survival time was five years or more. Leroux-Robert's indication guidelines are confirmed and slightly extended. The functional results and the frequency of recurrence are reviewed.

Adult↗
PubMed1981

[Cholesteatoma following tympanostomy (author's transl)].

12 cases of cholesteatomas of the middle ear were found 5 months to 3 years after myringotomy and insertions of ventilation tubes. The occurrence of these cholesteatomas could be related to the tympanostomy in every case, and was due to either improper myringotomy or poor-controlled removal of the tympanostomy tube.

Child↗
PubMed1979

[Surgical treatment of early facial palsies in cases of longitudinal fractures of the temporal bone (author's transl)].

Longitudinal fractures of the temporal bone are complicated by facial palsies in 10--25% According to the results of Fisch the lesions of the facial nerve are ever situated at the labyrinthine segment of the nerve. The most frequent lesion is the impression of bone fragments in the Fallopian canal. Clinical controls of the progredience of the palsy and tomographies are necessary. The only successful therapy in cases of early facial palsies due to longitudinal temporal bone fractures is the total decompression of the facial nerve with the combinated transmastoid approach and middle fossa approach.

Facial Paralysis↗