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Biomedical subjects

S Ehara

Publications and source records attributed to S Ehara.

At least 55 records · Page 3Linked to original sources
PubMed1998

Paravertebral ligamentous ossification: DISH, OPLL and OLF.

This is an overview of paravertebral ligamentous ossification based on our 5-year experience in ossification of posterior longitudinal ligament (109 cases) and ossification of ligamentum flavum (18 cases). Paravertebral ligamentous ossification is designated as the disorder caused by frequently coexisting ossification of paravertebral ligaments, DISH, OPLL, and OLF. The frequency of the occurrence of isolated ossification of PLL and OLF in Japan is still uncertain. DISH, which is not rare in Europe or North America, is frequently associated with ossification of the posterior aspect of the vertebral bodies, but it may be less symptomatic. The major cause of the probably higher incidence of symptomatic patients in Japan may be due to associated narrowing of the spinal canal.

Female↗
PubMed1998

[Report management system using Web server and search engine].

PURPOSE: To develop a management system of written reports using a Web server and search engine. METHODS: All the reports written through word processing software in the local area network in the radiology department were automatically transferred to one of the PC servers, in which a Web server and search engine were in operation. Previous reports, approximately eighty thousand, were also registered. Using Web browsers and the program developed by hypertext mark-up language and JavaScript, all the reports were readily accessible by keywords, or by any words within reports. RESULTS: Over 100, 000 reports were easily accessible using Web browsers, based on our one-year experience. Maintaining the Web server and search engine, and upgrading the program were easily managed in our daily practice. CONCLUSION: The report management system we developed is flexible, scalable, and easy to maintain. It is an effective way to manage a large volume of radiology reports written through word processing software.

Computer Communication Networks↗
PubMed1997

Paradoxical motion in spondylolisthesis due to two-segment instability.

We report here a paradoxical motion in unstable spondylolytic spondylolisthesis: a more forward displacement of the L5 vertebral body on the sacrum on the standing extension view than on the standing flexion view. An axial loading through the inferior articular process of the posteriorly displaced L4 on extension appears to be the cause, while the instability in the two contiguous segments may be an important contributing factor.

Adult↗
PubMed1997

Embryonal rhabdomyosarcoma of foot with expansive growth between metatarsals.

The case of a 14-year-old girl with rhabdomyosarcoma of the right foot is reported. Plain radiography showed a large nonspecific soft tissue tumor between the metatarsals with bowing of the metatarsals away from the mass. MR imaging showed a large soft tissue mass involving the metatarsals. The findings were conflicting, because the tumor had an infiltrative soft tissue mass and bowing of the metatarsals more suggestive of slow expansive growth. Bowing of short tubular bones may be a process similar to cortical saucerization, which is typically seen in Ewing's sarcoma, and it can be one of the findings of high grade neoplasms, such as embryonal rhabdomyosarcoma.

Adolescent↗
PubMed1997

Axial spondylometaphyseal dysplasia.

UNLABELLED: We present a previously undescribed skeletal dysplasia characterized by mild platyspondyly, small thorax with cupping of the anterior ends of the ribs, irregular proximal femoral metaphyses, and lacy appearance of the iliac wings. Two of the three cases were siblings. Retinitis pigmentosa and optic atrophy are associated findings. CONCLUSION: We describe a new type of spondylometaphyseal dysplasia (SMD) and propose the name axial SMD.

Bone and Bones↗
PubMed1997

Diffuse lipomatosis: imaging features.

A case of diffuse lipomatosis is reported. A 54-year-old man presented with a large mass in the left gluteal region. Plain radiographs showed hyperostosis of the phalanx of the left third toe. The diagnosis was aided by magnetic resonance imaging and computed tomography which clearly demonstrated a diffuse overgrowth of fatty tissue in the left buttock and the extremity involving the subcutaneous and gluteal muscular tissue.

Humans↗
PubMed1997

Complications of skeletal trauma.

Complications of skeletal trauma include a wide variety of problems. Vascular complications are of prime importance in the early phase of the trauma. Most skeletal problems, including problems in fracture healing, osteomyelitis, and osteonecrosis, become clinically important in the later stages. It is hoped that radiologists' attention to such problems may make early detection possible and may improve the functional outcome in such patients.

Bone and Bones↗
PubMed1997

[Radiology information system using HTML, JavaScript, and Web server].

We have developed a radiology information system using intranet techniques, including hypertext markup language, JavaScript, and Web server. JavaScript made it possible to develop an easy-to-use application, as well as to reduce network traffic and load on the server. The system we have developed is inexpensive and flexible, and its development and maintenance are much easier than with the previous system.

Local Area Networks↗
PubMed1996

Relationship of elongated anterior tubercle to incomplete segmentation in the cervical spine.

PURPOSE: To describe the elongated anterior tubercle of cervical vertebrae, its association with incomplete segmentation, and its analogy to sacralization of the lower lumbar vertebrae. MATERIALS AND METHODS: Cases with elongated anterior tubercles of the cervical vertebrae detected on plain radiography were collected during routine practice and their features analyzed on plain radiography and MR imaging. Five patients, aged 19-40 years, with the anomaly seen on plain radiography were included in this study. MR imaging was undertaken in one patient. RESULTS: Hypertrophy of the anterior tubercle was associated with incomplete segmentation in three of the five patients. Oblique views were adequate to demonstrate its nature. CONCLUSIONS: The association of an elongated tubercle and incomplete segmentation is similar to partial sacralization at the lumbosacral junction. Clinically it is important that these anomalies are not mistaken for pathologic findings.

Adult↗
PubMed1995

Muscular sarcoidosis.

A 57-year-old woman with sarcoid nodules in muscles of the lower leg was reported. A star-shaped low signal intensity in the lesion on MR imaging, supposedly corresponding to fibrous scar, appears characteristic of this condition, although its specificity is still uncertain.

Female↗
PubMed1995

Simultaneous avulsion of patellar apexes bilaterally in a hemodialysis patient.

A case of simultaneous bilateral avulsion of the patellar apexes is reported. Plain radiography showed bilateral patella alta, but MR imaging was diagnostic. Weakness of the tendo-osseous junction due to secondary hyperparathyroidism and additional chronic inflammatory changes due to repeated microtrauma were considered to be the cause of the rupture.

Adult↗
PubMed1995

Cortical defect of the distal fibula: variant of ossification.

PURPOSE: To elucidate the nature of a normally occurring cortical defect of the distal fibula. MATERIALS AND METHODS: In patients with sprain and nonspecific ankle pain during a 2-year period, the authors reviewed ankle radiographs, computed tomographic (CT) scans, and magnetic resonance (MR) images. Cases were added from our file. Dried skeletons and cadavers were evaluated with radiography for the presence of this cortical defect. RESULTS: Fifteen (1.8%) of 847 radiographs in 739 patients (male, 377; female, 362; age range, 15-84 years) showed a small cortical defect in the anterior aspect at the level of the distal tibiofibular joint. The age range of the subjects with the defect (male, four; female, 11) was 16-66 years. MR imaging in two patients showed a small low-signal-intensity area at the insertion site of the anterior tibiofibular ligament. Evaluation of 148 skeletons (75 subjects) revealed similar cortical defect in two cases (1.4%). CONCLUSION: The cortical defect of the distal fibula, at the insertion site of the anterior tibiofibular ligament, has no clinical significance and should not be confused with neoplasm.

Adolescent↗
PubMed1995

Desmoplastic fibroma. Aggressive curettage as a surgical alternative for treatment.

In this article, the authors present 5 patients with desmoplastic fibroma and review the literature. Four patients had aggressive curettage with bone graft, and 1 had aggressive curettage alone. Although the literature reports that many patients have recurrence after curettage, there have been no recurrences in these 5 patients during followup periods ranging from 5 years 6 months to 9 years. Although wide excision has been recommended in the literature, treatment with aggressive curettage achieved clinical and radiographic control of the lesions for at least an intermediate duration of followup.

Adolescent↗