Ryota Tamura

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To date, no clinical observations have been reported for histopathological changes in human gliomas under antiangiogenic treatment.We collected six glioblastomas resected under bevacizumab treatment. Histopathological investigation was performed by hematoxilyn-eosin staining and immunohistochemistry for CD34, VEGF, VEGFR1/2, HIF-1α, CA9, and nestin as(More)
The incidence of brain metastases for neuroendocrine tumor (NET) is reportedly 1.5~5%, and the origin is usually pulmonary. A 77-year-old man presented to our hospital with headache and disturbance of specific skilled motor activities. Computed tomography (CT) showed a massive neoplastic lesion originating in the left temporal and parietal lobes that caused(More)
BACKGROUND Leukoencephalopathy, cerebral calcifications, and cysts (LCC) is a rare disease that was first reported by Labrune in 1996. A case of adult-onset LCC was successfully followed up for a long period. CASE PRESENTATION A 30-year-old female presented with visual field disturbance and seizure on several occasions. Radiographic images revealed(More)
BACKGROUND Giant cell tumors (GCTs) are rare in the skull. The present report describes a case with a primary GCT located in the temporal bone and reviews the relevant literature. We also propose a treatment strategy for GCT of the skull. CLINICAL PRESENTATION A 41-year-old man presented with headache and auditory disturbance. Radiologic images showed a(More)
A vascularized middle turbinate flap (MTF) might be useful in the repair of lesions in the anterior olfactory groove. The sizes of the MTF and inferior turbinate flap (ITF) and these distances up to the frontal base were analyzed by computed tomography (CT) using a picture archiving and communication system (PACS) in 20 patients. The minimum flap(More)
Parallelizing compilers equipped with powerful compiler optimizations are essential tools to fully exploit performance from today’s computer systems. These optimizations are supported by both highly sophisticated program analysis techniques and aggressive program restructuring techniques. However, the compilation time for such powerful compilers(More)
BACKGROUND There has been no previous case report of a patient whose visual acuity improved after long-term blindness caused by tumor invasion into the optic canal. CASE DESCRIPTION A 65-year-old Asian woman presented with a 6-month history of blindness caused by a meningioma located on the inner third of the sphenoid ridge. An operation was performed to(More)
Background. Large craniotomy for acute subdural hematoma is sometimes too invasive. We report good outcomes for two cases of neuroendoscopic evacuation of hematoma and contusion by 1 burr hole surgery. Case Presentation. Both patients arrived by ambulance at our hospital with disturbed consciousness after falling. Case 1 was an 81-year-old man who took(More)
Functional near-infrared spectroscopy (fNIRS) is suitable for noninvasive mapping of relative changes in regional cortical activity but is limited for quantitative comparisons among cortical sites, subjects, and populations. We have developed a convolutional neural network (CNN) analysis method that learns feature vectors for accurate identification of(More)
INTRODUCTION Patients with fronto-orbital fibrous dysplasia (FD) occasionally present fronto-orbital protrusion, exophthalmos, and visual acuity disturbance. Simultaneous management of these conditions has not been previously described. CASE DESCRIPTION A-10-year-old female with fronto-orbital FD complained of left visual acuity disturbance. Head computed(More)