ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

摘要:

Fibrous dysplasia of the anterior cranial base involves the bony orbit and optic canal. Although fibrous dysplasia is benign, it may produce a mass effect along the course of the optic nerve, inducing visual disturbances. Optic canal decompression in patients without clinical signs of optic neuropathy is controversial. We describe five patients with extensive fibrous dysplasia of the anterior cranial base involving the orbit and optic canal. These patients underwent transcranial optic canal decompression before signs of severe visual loss during correction of dystopias and craniofacial deformity induced by fibrous dysplasia. Cranial orbital reconstruction was performed by means of split rib and cranial bone grafts. Postoperative follow-up did not reveal disturbances in visual function, extraocular motility, or evidence of cerebrospinal fluid fistulas. This suggests that early, radical resection of orbital fibrous dysplasia with optic canal decompression may be effective in preventing visual loss with minimal risk of other neurological sequelae. Subsequent orbital reconstruction involving split-thickness rib and cranial bone grafting yields satisfactory cosmetic results.

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

摘要:

The sphenoid sinus has traditionally been considered a poorly accessible structure, situated deep in the center of the head and surrounded by vital structures. Aggressive benign and malignant tumors are usually considered to be inoperable because of the proximity of such structures, thus precluding the possibility of total extirpation. Using the transfacial-subcranial approach, lesions at this site can be totally excised. Significant tumor-free survival rates can be anticipated.

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

摘要:

Proton irradiation and other charged-particle modalities have demonstrated effectiveness in controlling cranial base tumors and other lesions. The combination of capabilities available with heavy charged particles makes for a desirable therapeutic option that offers the opportunity for tumor ablation while preserving normal tissue function, with obvious implications for quality of life.

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

摘要:

Diagnosis of neurological disease by imaging has greatly improved in recent years. Precise morphological information can be obtained by computed tomography and magnetic resonance imaging, and biochemical or electrophysiological dynamic changes can be assessed by positron emission tomography or magnetoencephalography. The transcription of such biochemical or electrophysiological data on computed tomographic scan or magnetic resonance imaging can precisely demonstrate the local dynamic information in the brain. Three-dimensional imaging also provides accurate intelligence on the morphological structure of lesions and facilitates the surgical management. In this article, the recent technology of three-dimensional imaging diagnosis in skull base surgery is reported.

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID

摘要:

We retrospectively assessed the intermediate and long-term results of craniofacial surgery in 22 consecutive patients with nonsyndromic bicoronal synostosis to determine the outcome of corrective surgery. The study population consisted of 13 males and 9 females whose ages ranged from 6 weeks to 24 months (mean, 5.6 months) at the time of initial surgery. All patients had been assigned a diagnosis of nonsyndromic bicoronal synostosis. Each patient underwent resection of both coronal sutures and frontal orbital advancement with cranial vault remodeling using a floating forehead technique. Age at initial operation was 5 months or less in 13 patients and 6 months or more in 9. Complications occurred in 5 patients (23%), and 1 patient with an associated metabolic disorder died from respiratory arrest postoperatively.Follow-up ranged from 6 to 168 months (mean, 53.2 months). Results were graded according to the need for and extent of reoperation. Residual aesthetic deformities were documented in 12 patients (55%). Three patients (14%) required calvarial recontouring or cranioplasty to achieve satisfactory forehead contour or bony continuity. Total reoperation for recurrent deformity was required at a mean age of 29.7 months in 8 patients (36%) and is pending in another (4%). Four patients (18%) required a third operation (two total reoperations and two cranioplasties) to achieve satisfactory results. Eight of 13 patients (62%) operated on at 5 months of age or younger required total reoperation compared with 1 of 9 (11%) operated at 6 months of age or older. When analyzed alone, age of operation was a statistically significant determinant of the need for reoperation (p < 0.03). However, when subjected to multivariate analysis, neither age at operation nor the presence of an associated anomaly or positive family history had a significant effect on outcome.

ISSN:1049-2275    

出版商:OVID    

年代:1995

数据来源: OVID