[Primary solitary malignant schwannoma of the trigeminal nerve, Report of a case and review of the literature].

We present the case of a primary solitary malignant schwannoma of the trigeminal nerve. A total of 55 cases have been described in the literature; however, in these cases two tumors were affecting the supraorbital branch. This nerve-sheath tumor usually affects men in the fifth decade of life.

[Titanium magnets on implants as an aid in rehabilitation after tumor treatment].

After the resection of a tumor, many patients need a reconstruction with hard and soft tissue and also with sufficient dentures. Often, only little space is available for the implantation. Implant length and diameter have to be reduced, and the result is a change in the biomechanics with a possible mechanical overloading of the implant.

[A new aspect on the development of chronic middle ear diseases in patients with cleft palate].

Background: The prevalence of chronic middle ear disease in patients after surgery for cleft palate is about 50%. Aim of the present study was to analyse its morphological and physiological causes to prevent chronic atelectatic otitis media or cholesteatoma.

Methods: 15 adult patients with cleft palate were examined using middle ear microscopy, pure tone audiometry, EMG of the tensor veli palatini muscle and MRI of the Eustachian tube.

[Ultrasound of segment distraction and callus formation in reconstruction of the mandible. Value of surgical ultrasound of callus distraction of vascularized ilial crest transplants and mandibular segments in a previously irradiated area].

Purpose: B-scan ultrasonography (US) was applied in patients subjected to callus distraction for bone formation at the interface of mandibular segments and vascularised bone grafts.

Methods: This study consisted of 7 patients requiring further surgical augmentation to allow for prosthetic treatment. All patients had been preoperatively irradiated percutaneously in the region of the primary oral squamous cell carcinoma up to an isodose of 60-75.