Biomedical subjects

P Jecker

Publications and source records attributed to P Jecker.

40 records · Page 3Linked to original sources

PubMed1993

[Facial paralysis in benign parotid tumor: case report and review of the literature].

Generally, typical symptoms are significant for malignant parotid tumours: The infiltration of surrounding structures and facial paralysis. A case is reported where a benign parotid tumour (lymphadenitis) caused facial paralysis. Parotidectomy and the removal of the lymph node near the stylomastoid foramen led to complete restitution. A review of the literature of the past 40 years mentions 16 cases of benign neoplasms of the parotid gland that caused facial paralysis, such as pleomorphic adenoma, Warthin's tumour, oncocytoma, benign parotid cysts, chronic parotitis, lymphadenitis and parotid abscess.

Adult↗

PubMed1992

[Ossification of the stapedius tendon as a rare cause of conductive hearing loss].

Ossification of the stapedial tendon is a very rare cause of conductive hearing loss. In addition to a review of the literature, two further cases of unilateral hearing impairment are reported. In both cases, division of the ossified tendon led to a complete disappearance of the middle-ear problem. Apart from middle ear malformations, infections of the middle ear may also give rise to ossification of the stapedial tendon.

Audiometry, Pure-Tone↗

PubMed1990

Lymphocyte subsets in the blood. The influence of splenectomy, splenic autotransplantation, ageing, and the site of blood sampling on the number of B, T, CD4+, and CD8+ lymphocytes in the rat.

Removal of the largest single lymphoid organ, the spleen, leads to an increase in severe infections. To prevent this, transplantation of splenic fragments can be performed, which may, however, cause an increase in CD8+ lymphocytes in the blood of these patients. This is controversial since in the clinical situation it is often difficult to account for the different age of the patients, the time point after the operation and many other factors known to influence the number of lymphocyte subsets. Using a well-defined animal model, B, T, CD4+, and CD8+ lymphocytes were determined preoperatively in adult rats. Then, either sham splenectomy, splenectomy, or splenic autotransplantation was performed and the animals were followed up for 15 months after the operation. The surgical procedure itself, the site of blood sampling and ageing all influenced the number of lymphocyte subsets profoundly. Furthermore, giving the data as relative or absolute numbers leads to different results. Splenectomy caused lymphocytosis, due to a significant increase in B and CD8+ lymphocytes, as did splenic autotransplantation, which indicates that the number of lymphocyte subsets in the blood should not be used to argue in favour of or against splenic autotransplantation. This study demonstrates that the number of lymphocyte subsets in the blood is influenced by many factors and therefore should be determined in a highly standardized fashion.

Aging↗

PubMedDate not supplied

Metastasis to the parotid gland: is a radical surgical approach justified?

INTRODUCTION: At the time of this writing, it is unclear whether metastasis to the parotid gland necessitates a radical surgical approach, including removal of the facial nerve, which results in a great loss of the patient's quality of life. MATERIALS AND METHODS: The clinical course of patients who underwent parotid surgery in the ENT clinic of Hamburg University during the period 1982-1992 as a result of metastasis of a malignant melanoma or squamous cell carcinoma was studied. Either the lateral portion of the gland was removed (laterofacial parotidectomy) or the whole gland, thereby preserving the facial nerve (total parotidectomy) or removing it (radical parotidectomy). RESULTS: Metastasis to the parotid gland occurred in 17 patients (17/347). All 10 patients with metastasis of a malignant melanoma developed further metastasis and 7 of these patients, independent of the radicality of parotid surgery, died within the first postoperative year. Of the 7 patients with metastasis of a squamous cell carcinoma, 5 developed further metastasis and 4, independent of the radicality of parotid surgery, died within 16 months after the operation. CONCLUSION: Radical parotid surgery, which involves a great loss of quality of life for the patient, does not positively influence life expectancy. Moreover, the long-term prognosis is influenced by the type of the tumor and the stage at which the disease is first diagnosed.

Carcinoma↗