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Biomedical subjects

S Zehm

Publications and source records attributed to S Zehm.

At least 19 recordsLinked to original sources
PubMed1987

CT findings of aspergillosis in the paranasal sinuses.

The diagnosis of aspergillosis in the paranasal sinuses is preoperatively difficult to make in spite of the increasing number of reports showing its prevalence. However, because symptoms are usually non-diagnostic and infection is usually confined to a single sinus, X-ray findings are often suspect for possible neoplasm. We have studied six patients with aspergillosis, all of whom were suspected of having sinus tumors, but were otherwise healthy persons. Affected sinuses were examined by CT and the diagnosis of non-invasive aspergillosis was confirmed by operation. In this report, we have compared the CT and X-ray findings in our cases of aspergillosis. These findings indicate that CT is useful in the preoperative diagnosis of sinus aspergillosis.

Aged↗
PubMed1983

[Gnathostomiasis].

Explore the source record for details and available documents.

Diagnosis, Differential↗
PubMed1981

[Hypoglossal-facial nerve cross-over for rehabilitation of the paralyzed face (author's transl)].

Ten patients with unilateral facial nerve paralysis had been treated by hypoglossal-facial nerve approximation in the years 1971-1979. The proximal part of the facial nerve inside the petrous bone and at the inner ear entrance had been destroyed by tumor or accident without chance for repair. Therefore the hypoglossal nerve had been used to contact the intact main tunk and its intact peripheral nerve and mimic muscle system. 3 to 4 epineural nerve sutures had been placed with 8/0 vicryl suture material for approximation. In one patient anastomosis could be obtained by splitting the hypoglossal nerve with remarkable result to the mimic function, while the muscular atrophy of the tongue was minimal. With regard to the results the achieved mimic reinnervation took place in 3,5 to 5 months, but was found to be refined up to 2 years. Oral discomfort, swallowing, and speech disorders lasted 2 1/2 to 6 weeks postoperatively, depending upon the age and the patients mental activity, since the patient has to learn by using his tongue for mimical expressions. The final result obtained a balanced closure of the mouth and eyes, a complete movement of the lips and cheeks, a rarely delayed innervation of the frontal muscles. Due to reinnervation the denervated half of the tongue had developed a marked increase of activity from nerve fiber ingrowth of the intact side. The patient finally feels little to complain about the favourable facial result.

Adult↗
PubMed1980

[Basic techniques of flap formation and their application (author's transl)].

The different type of soft tissue defect in the face can be rehabilitated by means of classical local flaps, either by advancement, rotation or transposition. The excellent blood supply of the face permits of create a flap by its length which may extended up to 5 times of its diameter, and secondarily, may be turned up to an angle of 180 degree (median forehead flap). Typical donar areas besides the forehead are the nasolabial and submandibular area with the advantage of closure in correlation to the skin tension lines. By using a flap and transposing to the neighbourhood disfigurement of natural apertura, like mouth, nose and eyes, can be eadily avoided. Typical smaller and larger defects are demonstrated on patients following excisional tumor surgery in the forehead, naso-frontal-orbital angle, at the nose, the naso-labial-buccal region. Different ways of flap rehabilitation are analyzed for te same or similar type of defect, which is followed by the surgical and functional end-result. Attention is paid to the W-plasty, whereby a rhomboid defect is created and which can be eliminated with additional W-type incision lines. The results are excellent. Combinations of different types of flaps are possible, when f.e. a total loss of the upper lip and a most subtotal loss of the nose is present.

Face↗
PubMed1980

[The lateral approach to the base of the skull (author's transl)].

Report on 15-years personal experience in surgery of the transmandibular approach. 20 benign and 10 malignant tumors of primary location in the retromaxillary region had been operated by total removal: 7 pleomorphic adenomas arising from aberrant salivary glands, 3 neurofibromas, 1 neuroma, 1 gangliocytoneuroma, 1 hemangiopericytoma, 2 extracranial located meningeomas, 3 lipomas. Only in case of lipomas splitting of the mandible could be avoided. Malignant tumors had been managed by excisional surgery of 3 malignant pleomorphic adenomas, 4 adenoid-cystic carcinomas. Only biopsy had been achieved of 3 sarcomas. For diagnosis careful clinical examination including Eustachian tube function test, X-ray tomograms and angiography are very helpful.

Adenoma↗
PubMed1979

[The expanding skull fracture (author's transl)].

An expanding skull fracture with exceptional extension into the frontal sinus, the orbit and the ethmoidal cells is discussed. A 12 year old boy fell down the stairs at the age of 8 years and fractured his left frontal bone with extension to the base of the skull. He was seen because of a swelling of the scalp, an intermittent orbital oedema and convulsions. At neurosurgery a large gaping fracture of the frontal bone was found and this was interposed with fibrous tissue and relatively denatured cerebral tissue. The management both neurosurgical and rhinological is discussed.

Child↗
PubMed1977

[The intratracheal behavior of the ear-composite graft. An experimental and histological study (author's transl)].

The behavior of the composite graft obtained from the concha of the external ear is studied in mini-pigs, 25, 35, 46 and 85 days following transplantation into the tracheal wall by light- and electromicroscopy. The squameous cell epithelium persists to the same extent, but its thickness has decreased as well as desquamation by adaption to the intratracheal conditions. The transplanted cartilage started degeneration in the 4th postoperative week by a slowly and continous transformation into a granulating and fibrous tissue. The adjacent respiratory epithelium reacts by hypersecretion and by the increase of goblet cells. Therefore it may be differentiated from the transplanted squameous cell epithelium. The suture material vicryl is well tolerated causing only a slight reaction by the surrounding tissue, so far as the stitch is placed intraluminally through both, the transplant and the tracheal wall.

Animals↗
PubMed1976

[Tracheal stenosis in children and its operative management (author's transl)].

The problem of tracheal stenosis in children is discussed, with emphasis placed on subglottic disease. The primary etiologies for the stenosis were chronic intubation and emergency tracheostomies following accidents. The operative technique described utilizes vertical division of the trachea and cricoid in the midline. The margins are then stretched laterally and sutured to skin incision lines. Granulations, scar and dislocated cartilage are removed, and the denuded area covered with free mucosal grafts or with pedicle skin flaps. After reestablishing an adequate airway (with use of an acrylic prosthesis for several weeks), the tracheal groove is closed with a composite graft from the auricle. A tracheostomy is left in place an additional 2-3 weeks, while the raw neck area is resurfaced by a transposition flap from adjacent skin. The technique has worked well since 1971 in three children (aged 3, 5 and 7 years), and was also performed successfully on five adult patients.

Age Factors↗