Publications by authors named "Jiro Iimura"

Background: Rhinoplasty is one of the most popular plastic surgery techniques. The evaluation of both functional and cosmetic aspects of rhinoplasty is essential for planning and assessing surgery results. The Standardized Cosmesis and Health Nasal Outcomes Survey (SCHNOS) is a validated questionnaire used to assess both functional and aesthetic symptoms in patients with nasal problems, and it has been translated into several languages.

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Bronchiectasis is a chronic respiratory condition characterized by irreversible bronchial dilation, often caused by infection or inflammation. It can be associated with primary ciliary dyskinesia (PCD), a hereditary disorder affecting cilia function in various organs and flagella. PCD's genetic heterogeneity leads to varying disease severity.

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Objective: Caudal septal deviation (CSD) correction during septorhinoplasty is challenging, and various surgical modifications and evaluations remain controversial. This study aimed to introduce an objective evaluation method based on computed tomography (CT) images to measure the effectiveness of septorhinoplasty for CSD treatment.

Methods: We retrospectively analyzed preoperative and postoperative CT images of patients who had undergone functional open septorhinoplasty by the plastic surgery and otorhinolaryngology teams between January and September 2019.

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Purpose: To histologically describe a direct contact (the so-called dehiscence) of the optic nerve (ON) and/or internal carotid artery (ICA) to the mucosa of posterior paranasal sinuses represented by the sphenoid sinus (SS).

Methods: Observations of histological sections of unilateral or bilateral skull bases (parasellar area and orbital apex) from 22 elderly cadavers were made.

Results: A bony septum was less than 300 µm between the SS and ICA and 200 µm between the SS and optic nerve.

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Purpose: Caudal septoplasty is a difficult procedure. The cutting and suture technique is suitable for caudal septoplasty, but a batten graft is always necessary and bears the risk of nasal tip projection loss. We established a modified cutting and suture technique (MCAST), without using a batten graft, and investigated its effectiveness in correcting nasal obstruction and preventing nasal tip projection loss.

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Background: To repair a blow-out fracture, the endonasal approach is indicated when the center of the fracture occurs in the orbital floor medial to the infraorbital nerve, or when the orbital tissue is herniated inwards; additionally, the combined endonasal and transmaxillary approach is indicated for fractures of the anterior and lateral parts of the orbital floor.

Method And Conclusion: The use of endoscopic modified medial maxillectomy and special instruments enabled the surgeon to repair an outwardly herniated blow-out fracture by the endonasal approach alone, despite the center of the fracture being in the orbital floor lateral to the infraorbital nerve.

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Background: A staging system is essential for determining the optimal surgical approach and predicting postoperative outcomes for inverted papilloma (IP). Although staging systems based on the extent to which the location is occupied by an IP have been widely used, an origin site-based classification of IP using unsupervised machine learning algorithms has recently been reported.

Objective: To determine the most appropriate of five staging systems for sinonasal IP by comparing recurrence rates for each stage according to each of those systems.

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Purpose: This study aimed to evaluate the 10-year adherence to and identify the predictors of dropout from continuous positive airway pressure (CPAP) treatment for patients with moderate-to-severe obstructive sleep apnea (OSA).

Methods: We retrospectively analyzed the continuity, dropout, or other behaviors of 181 patients who initiated CPAP treatment at the Tokyo Dental College Ichikawa General Hospital from January 2003 to June 2005.

Results: Among a total of 181 patients, 56 (30.

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Objective: A major drawback of the Killian incision is its inability to access the caudal septum and correct caudal septal deviation. Open and hemitransfixion septorhinoplasty are considered necessary in such cases. We developed a new septoplasty method that can be successfully applied in patients with mild caudal septal deviation.

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Background And Objective: Obstructive sleep apnea (OSA) may affect daily cognitive functioning in children. The aims of our study were two-fold. The first aim was to detect, using the Child Behavior Checklist (CBCL), whether adenotonsillectomy (AT) for the treatment of OSA improved the behavior of children with autism spectrum disorder (ASD).

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Objective: Although hemangiomas are common lesions of the head and neck, sinonasal hemangiomas are rare. The purpose of this study was to analyze the clinical features (sex, age, symptoms, and size and anatomical location of the lesion) and the histological findings of sinonasal hemangioma cases, to assess preoperative transarterial embolization, and to evaluate the outcome (recurrence or no recurrence) of endoscopic sinus surgery.

Methods: Clinical records of 31 patients who underwent endoscopic sinus surgery for resection of sinonasal hemangioma between January 2010 and June 2015 were retrospectively reviewed.

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Objective: Hemostasis is difficult in patients with bleeding emanating from the deep regions in the nasal cavity; however, there is no standard treatment method. We studied hemostasis procedures in patients who visited our outpatient department and presented with idiopathic epistaxis extending from the posterior nasal cavity to Kiesselbach's area.

Methods: The subjects were patients with epistaxis who visited our hospital between June 2008 and May 2010.

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The purpose of our research is to develop surgical navigation systems to enhance surgical safety. Our systems make use of augmented reality technology to superimpose, on the surgery screen on a real time basis, patients' organ models reconstructed in 3D from their X-ray CT data taken before surgery. By doing so, the systems display anatomical risk materials, tumors and blood vessels which surgeons cannot see with their naked eyes.

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Objective: A retrospective study of risk factors for recurrent epistaxis and initial treatment for refractory posterior bleeding was performed. Based on the results, proposals for appropriate initial treatment for epistaxis by otolaryngologists are presented.

Methods: The data of 299 patients with idiopathic epistaxis treated during 2008-2009 were analyzed by multivariate logistic regression analysis.

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Current knowledge on the prevalence and clinical features of antrochoanal polyps (ACPs), benign lesions arising in the maxillary sinus and extending into the choana, is very limited in Japan. We prospectively evaluated prevalence and clinical features in 15 subjects with ACPs from among 728 undergoing endoscopic endonasal sinus surgery between April 2007 and March 2008, and prospectively enrolled in this study. The 15 subjects, who accounted for 2.

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Objective: Our objective was to determine the rate of complications in endoscopic sinus surgery (ESS) and associated risk factors.

Methods: We prospectively studied 1,382 subjects undergoing ESS for rhinosinusitis and cystic sinus disease at 16 hospitals during 2007 and 2008. Surgeons provided information on peri-and postoperative complication occurrence.

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We describe an image-guided surgery system for endoscopic sinus surgery. The system has three components: stereoscopic endoscope, optical location sensor and graphic workstation. The optical location sensor measures the movement of the endoscope and the patient's head.

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Subperiosteal abscess is generally defined as the collection of pus between the periorbita and the orbital wall, and usually results from paranasal sinus infection. Early, appropriate evaluation and management observing signs and symptoms of orbital inflammation are required to prevent blindness. We report 5 cases of subperiosteal abscess caused by paranasal sinus problems.

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