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Biomedical subjects

L Manolidis

Publications and source records attributed to L Manolidis.

At least 19 recordsLinked to original sources
PubMed1991

Ultrastructural changes of stapedius muscle and stapedius branch nerve endings in otosclerotic patients.

We studied in the electron microscope 12 stapedius muscles and stapedius branches of the facial nerve excised from otosclerotic patients who underwent stapedectomy for hearing restoration. Almost all of the stapedius, muscles demonstrated morphological alterations, such as accumulation of lipids and osmiophilic material, dilatation of the sarcoplasmic reticulum, sarcoplasmic invaginations of the nuclei and accumulation of fibroblasts and satellite cells on the surface of the muscle fibers. The stapedius branch of the facial nerve demonstrated a marked loss of myelinated fibers. Most of the unmyelinated or demyelinated fibers were surrounded by thick processes of the Schwann cell. The axons showed a paucity of neurofilaments and the nerve endings showed a rough dilatation of the cisternae of the smooth endoplasmic reticulum as well as accumulation of osmiophilic material. The morphological alterations of the stapedius muscle and the stapedius branch of the facial nerve in otosclerosis suggest that in addition to the lesions of the bone at various areas of predilaction, a substantial pathological alteration of the muscle and nerve fibers also occurs in the middle ear adjacent or distal to otosclerotic foci, a fact that enlarges the concept of the pathological spectrum of the disease.

Facial Nerve↗
PubMed1980

Otological findings in cervico-oculo-auditory dysplasia.

A case of congenital ear dysplasia, combined with cleft palate and anomalies of the cervical spine and eyes, is described. The case belongs to the group of cervico-ocular-auditory dysplasias (Klippel-Feil syndrome). A strange feature in our case was the co-existence of conductive hypakousia in the right ear, due to congenital fixation of the stapes footplate, with perceptive deafness in the left ear, due to dysplasia of the cochlea and internal auditory meatus. The conductive hypakousia in the right ear was successfully treated by stapedectomy. A review of the literature on the Klippel-Feil syndrome has shown that, in some of them the conductive deafness was unexplained, while in others the deafness was due to dysplasia of the ossicular chain or to a combination of dysplasias of the labyrinth and middle ear in the same ear. The co-existence of middle ear dysplasia in one ear with contralateral dysplasia of the inner ear and internal auditory meatus is rare.

Child↗
PubMed1978

Stapes gusher and Klippel-Feil syndrome.

The stapes gusher which is the most dramatic complication of stapedectomy arises from an abnormal communication between the subarchnoid and perilymphatic spaces. This congenital defect may be associated with other anomalies such as the Klippel-Feil syndrome. Two cases of stapes gusher in patients with congenital fixation of the footplate are described. One of them was combined with Klippel-Feil syndrome. The object of this paper is to emphasize the necessity of a complete preoperative examination of all cases of congenital footplate fixation.

Adolescent↗
PubMed1978

[Sudden deafness and vestibular failure in the cervical syndrome (author's transl)].

Acute onset deafness with vestibular failure in the cervical syndrome could be due to embolism of the labyrinthine artery. Probably the symptomatology of the cervical syndrome developes independantly. Two patients with sudden deafness and vestibular failure are reported. Embolism of the labyrinthine artery in at least one of these patients appears to have occurred. The prognosis in respect of recovery of function is unfavourable.

Cervical Rib Syndrome↗
PubMed1977

[Vagus neurinoma of the basic of the skull and endocranium (author's transl)].

We are discussing a case of neurinoma of the tenth cranial nerve in the area of the base of the skull with endocranial extension in a 51-years-old female patients. The first symptom was hoarseness of the voice, and three years later more cranialnerves were involved (V-VII-X-XI-XII). The existence and the extension of the tumor was verified by radiological examination of the base of the skull, carotic angiography, myelography and scanning; the diagnosis was proved by biopsy. The treatment of choice is the operation because the tumor is radioresistant.

Cranial Nerve Neoplasms↗