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Biomedical subjects

F X Michelet

Publications and source records attributed to F X Michelet.

At least 19 recordsLinked to original sources
PubMed1995

Treatment of ameloblastoma of the jaws.

OBJECTIVE: To evaluate treatment of ameloblastoma of the jaws and suggest a more aggressive approach for well-defined cases. SETTING: Referral center. PATIENTS: Forty-one patients were treated for ameloblastoma of the jaws. RESULTS: Seventeen patients had a local recurrence; 14 had initial curettage and three had initial resection. Seven patients had two or more recurrences. Eight patients underwent radiotherapy; two died of progressive disease. CONCLUSIONS: Ameloblastoma had a high rate of local recurrence if not adequately removed. Segmental resection for the mandible and partial maxillectomy for the maxilla should be the primary treatment; marginal resection is appropriate only for small primary tumors. For multiple recurrences, radiotherapy is effective, and surgery and radiotherapy (50 Gy postoperatively) should be used in selected cases.

Adolescent↗
PubMed1992

Results of surgical treatment of T3 and T4 tumors of the oral cavity and oropharynx.

The combined use of surgery and radiotherapy is commonly accepted as the most effective treatment for locally advanced head and neck cancers. T3 and T4 tumors of the oral cavity and oropharynx often necessitate extensive local surgery. From 1981 to 1988, 199 patients with T3 and T4 tumors of the oral cavity and oropharynx were treated. One hundred seventeen patients underwent surgery plus postoperative radiotherapy; 78 had flap reconstructions. This series is extremely homogeneous because surgery was always performed by two surgeons, whereas radiotherapy was the responsibility of the same physician. The results of this study show a 96% local control rate at the end of treatment among the patients with combined treatment. The average time by which hospitalization was prolonged due to surgery was 29 days. The type and delay of recurrences and survival in relation with node involvement are also discussed. Extensive surgery in association with radiotherapy remains a reliable treatment in such patients.

Adult↗
PubMed1991

Modified approach for ethmoid and anterior skull base surgery.

The use of combined craniofacial resection is well established for tumors of the ethmoid bone and the anterior aspect of the base of the skull. Mobilization of the medial fronto-orbital ridge improves the transbasal approach and can be performed with a monobloc bone flap. We describe an en bloc bifrontal craniotomy including the supraorbital ridges and the nasal bones. This provides a wider angle of approach to the anterior aspect of the base of the skull than any other method and avoids retraction of the frontal lobes. This type of bone flap procedure can be performed after a wide periosteal dissection in the coronal area of the scalp alone, without facial skin incision.

Adult↗
PubMed1990

[Complementary tests in the evaluation of velar insufficiency].

In order to assess the degree of velar deficiency as accurately as possible, three tests can be made: a nasofibroscopy, X-rays, and notably xeroradiography, a radiography made under brightness amplification. This check-up indicates the course of action to be undertaken: orthophonic rehabilitation followed, depending on the results, by a surgical operation. These tests are incorporated into a pluridisciplinary treatment.

Deglutition↗
PubMed1989

Approach to the pterygomaxillary space and posterior part of the tongue by lateral stair-step mandibulotomy.

Fifteen patients underwent surgery for retromandibular parotid, pharyngeal, or posterior tongue tumors. Surgical approach to the pterygomaxillary fossa, parapharyngeal space, and posterior tongue was performed by external cervical incision and lateral stair-step mandibulotomy. After resection of the tumors, the mandibular segments were replaced and secured with miniplates. The plates were removed after six weeks whenever postoperative radiation therapy was planned. By reflecting the ascending ramus, this method provides excellent exposure of the concerned areas. It makes unnecessary both incision of the lower lip and intermaxillary fixation with arch bars, thus allowing a quick resumption of oral feeding. A review of 15 patients demonstrated satisfactory results for mandibular function and morphologic appearance, with minimal complications.

Adolescent↗
PubMed1987

[Craniofacial injuries and osteomeningeal ruptures. When should the anterior fossa be approached?].

A retrospective analysis was carried out of 142 cases of craniofacial traumas divided into 5 types according to the Fain classification. The incidence of cerebrospinal fistula of fronto-basal skull is very high in types III and IV traumas (60% of the cases). It is less important in type II2 traumas representing severe naso-orbital lesions (40% of the cases). It is only of 20% in type II1 traumas (Lefort II and III). Uncontrollable rhinorrhea and late meningitis are mainly due to types II and IV traumas. From these findings surgical indications and technique of the approach of the fronto basal skull are discussed.

Adolescent↗
PubMed1985

[The amount of maxillofacial risk in playing rugby].

123 cases of maxillo-facial injuries due to rugby and treated in the Department of Maxillo-Facial Surgery at the University Teachers Hospital (C.H.U.) of Bordeaux between 1981 and 1984 are analyzed. The high rate of injuries decreases considerably if accidents caused by intentional brutality are excluded. This then approaches the rate for other team sports. Rugby is not basically a violent sport but can be made so by the unfairness of certain players. It would be most advisable to educate players along these lines.

Adolescent↗
PubMed1984

Cutaneous versus myocutaneous flaps in the repair of major defects in head and neck cancer: a study of 331 flaps.

A retrospective analysis was carried out of 311 reconstructions of major defects following head and neck cancer treatment. Three hundred thirty-one flaps were used; they included cutaneous flaps from 1972 to 1979 and myocutaneous flaps (MCF) after 1979. The aim of this study was to compare the healing patterns of the two types of flaps used in similar circumstances. Even though the use of myocutaneous flaps reduced necrotic complications, there was no significant improvement in overall healing. In this type of reconstruction, local conditions as well as more general factors have greater prognostic significance. Apart from considerations of reliability, other criteria have led to myocutaneous flaps being the treatment of choice in cervicofacial cancer repair. However, specific indications for the use of cutaneous flaps remain.

Adult↗
PubMed1983

[Technical aspects of reconstruction of the mandibular region using composite flaps of the latissimus dorsi].

Anatomical data from 20 laboratory dissections are employed to describe a composite flap associating skin, the latissimus dorsi muscle, and ribs, important anastomoses existing between the intercostal and inferior scapula vascular systems. Two cases were treated by single-stage extensive reconstruction of the mandibular region employing this osteomusculocutaneous flap of the latissimus dorsi.

Adult↗
PubMed1982

[Contribution of echotomography to the study of parotid diseases].

Echotomography of the parotids in 88 patients was successful in detecting normal parotid morphology or inflammation of the parenchyma (parotitis) in 100 p. cent of such cases, and detecting the precise localization of tumors (adenopathies or intraparotid tumors) up to 3 mm in diameter in 93 p. cent of cases. Though cystadenomas do not provide a specific image, their appearance is typical. Positive diagnosis was possible in 85 p. cent of mixed tumors of 1 cm diameter or more, and in 5 out of 7 cases of malignant lesions. The diagnostic value of this examination is markedly limiting that of parotid sialography.

Humans↗