Masaya Aoki

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Healing of an experimental bony defect in the rat's tibia was studied with an immunofluorescent technique to clarify when and where substance P (SP) and calcitonin gene-related peptide (CGRP) would develop. The normal tibia showed a few SP- and CGRP-immunofluorescent nerve fibres. In the experimental tibia, the number of these fibres increased on the 6th(More)
BACKGROUND Ewing's sarcoma family of tumors (ESFT) is one of the most malignant groups of tumors in young people. Human leukocyte antigen (HLA) class I displays endogenously processed peptides to CD8+ T lymphocytes and has a key role for host immune surveillance. In ESFT, the investigation concerning both HLA class I expression and T-cell infiltration has(More)
Surgical correction of total anomalous pulmonary venous connection (TAPVC) remains a challenge, with reported early mortality rates of up to 20 %. In this review article, we describe several topics, including surgery for neonates, diagnoses with multidetector computed tomography (MDCT), and primary sutureless repair. Several studies have reported mortality(More)
BACKGROUND Current knowledge in long-term results of tricuspid valve replacement is limited. Present study reviews our experience from a consecutive series. METHODS We retrospectively studied the early and late results of 32 consecutive patients (7 male and 25 female; mean age 60.2 ± 18.1 years) undergoing bioprosthetic tricuspid valve replacement between(More)
A tracheocutaneous fistula may develop when a tracheostomy orifice epithelializes during a prolonged course of healing or undernutrition. Various techniques for closing such fistulae have been reported. However, a standard procedure has not yet been established. We, herein, present a case involving a 35-year-old woman who developed a tracheocutaneous(More)
A 56-year-old male who had received transcatheter coil deposition 10 years ago for an arteriovenous malformation (AVM) was admitted to our hospital because of persistent hemosputum. Chest radiograph and bronchoscopy revealed straightened coil bundles in his air way. Recently, less invasive transcatheter intervention has been performed more frequently for(More)
A 66-year-old woman presented with a 2-year history of asthma has progression of dyspnea within a week, and a computed tomography (CT) revealed an endotracheal tumor at level of aortic arch. The resected tumor, measured by 18 × 12 × 10 mm, has histologically malignant features including frank invasion with desmoplastic stroma and foci of necrosis. Presence(More)
We report a case of iatrogenic esophageal injury treated with a covered expandable metallic stent after thoracoscopic chest drainage. A 70-year-old man who had stricture of the esophagus after endoscopic submucosal dissection underwent balloon dilation. Chest computed tomography revealed esophageal rupture. Initially, continuous intra-esophageal drainage(More)
The level and morphology of posterior cruciate ligament (PCL) attachment vary greatly among individuals, and the function of the PCL after tibial osteotomy performed during total knee arthroplasty (TKA) surgery remains unclear. Therefore, we evaluated the resection amount of PCL attachment and the function of the residual PCL in cruciate-retaining (CR)-type(More)