Thoracic composite hemangioendothelioma with neuroendocrine marker expression.

Background: Composite hemangioendothelioma is an extraordinarily rare form of vascular neoplasm which develops predominantly in the skins and soft tissues of the adults. Neuroendocrine marker expression in composite hemangioendothelioma is considered as specifically relevant to the more aggressive behavior.

Case Presentation: The patient was a 71-year-old man complaining continuous back pain.

Root canal filling materials spread pattern mimicking root fractures in dental CBCT images.

Objective: To clarify the cause of artificial tooth-root fracture lines in cone beam computed tomography (CBCT) images caused by root canal filling materials and to enhance the diagnostic performance of CBCT.

Study Design: We analyzed the CBCT images of 18 extracted human teeth (9 upper central incisors and 9 lower premolars) that were filled with a size 50 gutta-percha cone and inserted into tooth sockets in a human skull.

Results: The CBCT images of the incisors displayed artificial lines in the oblique directions, notably the mesiobuccal, distolingual, distobuccal and mesiolingual directions, but only rarely in the cross-directions (buccal, lingual, mesial, and distal).

The Effects of Spinal Fusion on Lumbar Disc Degeneration in Patients with Adolescent Idiopathic Scoliosis: A Minimum 10-Year Follow-Up.

Study Design: Retrospective study.

Objectives: This study focused on patients with adolescent idiopathic scoliosis (AIS) who were followed up for more than 10 years, and assessed the influence of spinal balance on lumbar degenerative changes at distal unfused segments (DUS).

Summary Of Background Data: Previous studies suggested that longer fusion segments may result in higher rates of occurrence of disc degeneration (DD) at unfused segments adjacent to the distal fused area.

Characteristic findings on panoramic radiography and cone-beam CT to predict paresthesia after extraction of impacted third molar.

The purpose of this study was to compare findings on the relationship between impacted molar roots and the mandibular canal in panoramic and three-dimensional cone-beam CT (CBCT) images to identify those that indicated risk of postoperative paresthesia. The relationship between impacted molars and the mandibular canal was first classified using panoramic images. Only patients in whom the molar roots were either in contact with or superimposed on the canal were evaluated using CBCT.

Composition of the blood supply in the sublingual and submandibular spaces and its relationship to the lateral lingual foramen of the mandible.

Objective: The purpose of this research was to contribute to minimizing arterial disruption during mandibular surgical procedures by clarifying the course of the arteries supplying the sublingual and submental regions.

Study Design: Heads of 75 human cadavers were dissected to identify the arterial supply of the sublingual and submental regions. Computed tomography scans were performed to visualize the lateral lingual foramina of the mandibles.

The T wave inversion score is useful for evaluating the time-course of acute pulmonary embolism.

Background: The 12-lead electrocardiogram (ECG) has relatively poor specificity for identifying acute pulmonary embolism (APE). The aim of this study was to investigate ECG abnormalities according to 2 different criteria and their usefulness for assessing changes in APE.

Methods And Results: Fifty-two APE patients underwent ECG examinations in the acute and chronic phases.

Effects of dose reduction on multi-detector computed tomographic images in evaluating the maxilla and mandible for pre-surgical implant planning: a cadaveric study.

Objective: To assess effects of dose reduction on image quality in evaluating maxilla and mandible for pre-surgical implant planning using cadavers.

Materials And Methods: Six cadavers were used for the study using multi-detector computed tomography (CT) operated at 120 kV and the variable tube current of 80, 40, 20 and 10 mA. A slice thickness of 0.

Effects of tube current on cone-beam computerized tomography image quality for presurgical implant planning in vitro.

Objective: The purpose of this study was to evaluate the effect of tube current reduction on the quality of cone-beam computerized tomography (CBCT) images of the maxilla and mandible for presurgical implant planning.

Study Design: Six cadaver heads were imaged with a CBCT (3D Accuitomo) operated at 80 kVp and variable tube current (8, 4, 2, or 1 mA) in full-scan mode. For the posterior region of maxilla and mandible, half-scans were also performed at similar settings.

Effect of computer assistance on observer performance of approximal caries diagnosis using intraoral digital radiography.

Logicon Caries Detector (LDDC) is the only commercially available computer-assisted diagnostic system for caries diagnosis. The object of this study is to elucidate the efficacy of LDDC when used by inexperienced dentists. Fifty extracted teeth were imaged using an RVG6000.

Assessment of the blood supply to the lingual surface of the mandible for reduction of bleeding during implant surgery.

Objectives: The aim of this study was to assess the frequency of the foramina and their canals on the lingual surface of the mandible using computed tomography (CT), which was carried out for dental implant planning.

Material And Methods: First, the visibility of the lingual canals of the CT image was verified by dissecting five cadavers. CT images of 200 patients, who had decided on implant treatment, were used in this study.

Transforming growth factor beta 2 promotes the formation of the mouse cochleovestibular ganglion in organ culture.

The inner ear structures are derived from the otic vesicle (OV) which is formed by thickening and invagination of the otic placode of the surface ectoderm. A number of neuroblasts, which arise from epithelial cells of the otic vesicle, delaminate and differentiate into neurons of the cochleovestibular ganglion (CVG). We have found that transforming growth factor-BEta2 (Tgfbeta2 ) was expressed in the otic epithelium at the OV stages between Embryonic days (E) 9.

Radiologic measurements of the mandible: a comparison between CT-reformatted and conventional tomographic images.

This study was carried out to compare the accuracy of determination of the mandibular contour and the position of the mandibular canal in cadaver mandibles by the multiplanar reconstruction method (MPR-CT), which has recently come to be used widely for preoperative examinations, with those by tomographic techniques and to evaluate the usefulness of MPR-CT. Using three imaging systems, i.e.

Indian hedgehog gene is a target of the bone morphogenetic protein signaling pathway.

Bone morphogenetic proteins (BMPs), a large subgroup of the transforming growth factor-beta family of growth factors, are key mediators of many fundamental processes in embryonic development. The BMP target genes mediating these effects and the mechanism of their selective regulation are poorly characterized. In this study, we used a chromatin immunoprecipitation-based gene cloning method to identify BMP target genes in a mouse embryonic carcinoma cell line.

Mouse Snail family transcription repressors regulate chondrocyte, extracellular matrix, type II collagen, and aggrecan.

Snail family genes are conserved among species during evolution and encode transcription factors expressed at different stages of development in different tissues. These genes are involved in a broad spectrum of biological functions: cell differentiation, cell motility, cell cycle regulation, and apoptosis. However, little is known about the target genes involved in these functions.