Endoscopic Approach to Postoperative Maxillary Cysts Ensuring Infraorbital Nerve Safety With Direct Approach to the Anterior and Lateral Part of the Maxillary Sinus With an Endoscope (DALMA): A Case Report.

Postoperative maxillary cysts (POMCs) present significant challenges, especially when located laterally or when the infraorbital nerve's course is unclear on imaging. Traditional endoscopic approaches are often limited by a high risk of recurrence and potential nerve injury. Here, we report a case of a 72-year-old woman with a right maxillary cyst, which caused pain and swelling.

An innovative reconstruction procedure for fractures extending to the posterior orbital floor: utilizing the inferior margin of the greater wing of the sphenoid bone for reconstruction.

Purpose: No definitive procedures have been proposed for orbital floor fractures extending to the slope of the posterior end, which is a challenging problem. This study demonstrates the effectiveness of an orbital reconstruction procedure based on anatomical landmarks that we developed, called the three landmarks procedure (TLP).

Methods: This study is a single-center retrospective cohort study conducted by the Department of Otorhinolaryngology, Japanese Red Cross Asahikawa Hospital.

Spontaneous Cerebrospinal Fluid Leakage at the Clivus: Minimally Invasive Surgery Without External Autograft Harvesting.

Spontaneous cerebrospinal fluid (CSF) leakage at the clivus is rare. In previous reports, reconstructive materials used to treat such leakage were typically autografts. Considering the pathology, rigid reconstruction is preferred.

Modified procedure for reconstructing the inferomedial orbital wall: silicone sheet implantation without surgical removal.

Background: Due to the complexity of reconstructing wide inferomedial orbital wall fractures, silicone sheets are the preferred choice of reconstructive material. Nevertheless, it is crucial to remove the silicone sheet postoperatively due to the risk of delayed complications associated with its placement.

Methods: We developed a procedure in which a silicone sheet implanted in the orbit can be extracted through the nasal cavity by removing the fractured portion of the medial orbital wall.

Algorithm for pediatric orbital blowout fractures: a 20-year retrospective cohort study.

Objective: Pediatric orbital blowout fractures can include pathologies that seem mild but require urgent release; serious sequelae can occur with standby surgery or conservative treatment. We sought to validate an algorithm for the treatment of pediatric orbital blowout fractures.

Methods: This retrospective cohort study included 61 pediatric patients, aged 18 years or younger, treated for pure orbital blowout fractures according to the algorithm from April 1, 2000, to August 31, 2020, at the Japanese Red Cross Asahikawa Hospital.

Modified procedure for reconstructing the inferior wall of the orbit: identification of a reliable new landmark.

Background: In orbital floor reconstruction, fractures involving the slope of the posterior end of the orbital floor make it difficult to determine the best location for implant placement. Therefore, landmarks for reconstruction are desirable to perform safe and reproducible reconstruction surgery.

Methods: We developed a surgical procedure that focuses on three orbital landmarks: the infraorbital nerve, the inferior margin of the greater wing of the sphenoid bone, and the posterior superior wall of the maxilla.

Neuroendocrine Carcinoma at the Sphenoid Sinus Misdiagnosed as an Olfactory Neuroblastoma and Resected Using High-Flow Bypass.

In the diagnosis of olfactory neuroblastoma (ONB), the presence of S-100-positive sustentacular cells surrounding the tumor is important; however, these are also present in normal nasal sinus epithelium. Although ONB often has a different final diagnosis, complete resection of the tumor has a good prognosis and minimally affects the patient's treatment plan. When the tumor extends around the internal carotid artery (ICA), complete resection is difficult due to the high risk of vascular injury; revascularization using high-flow bypass can avoid this complication.

Closure of spontaneous cerebrospinal fluid leakage via fistula at the lateral wall of the sphenoid sinus using a bone pile.

This report describes a case of spontaneous cerebrospinal fluid leak through a narrow canal-like fistula in the lateral wall of the sphenoid sinus, which was managed through rigid reconstruction. Rigid reconstruction of the skull base was performed by fitting a pile-shaped bone into the fistula like the pile-driving technique.

A case of catastrophic epistaxis from the internal carotid artery due to multiple surgeries and irradiations for pituitary tumor: Rescued utilizing high-flow bypass and simultaneous skull base reconstruction.

Revascularization for internal carotid artery rupture should be considered immediately under the situation where endovascular treatment is not indicated. Revascularization can prevent the risk of hemorrhage during skull base reconstruction.

A case report of Kuttner tumor mimicking a malignant tumor, leading to overtreatment.

Preoperative diagnosis with multimodal approaches might lead to overtreatment. Cautious understanding of cytology and dynamic contrast-enhanced magnetic resonance imaging is required when a Kuttner tumor is cited as differential diagnosis.

The impact of nasal surgery on sleep quality.

Objective: Nasal obstruction is considered to be one of the risk factors for obstructive sleep apnea, together with a high arched narrow palate, elongated uvula, malocclusion, and tongue and tonsil size. The impact of nasal obstruction on sleep apnea is controversial, however, and its relation to sleep quality is rarely discussed. The purpose of this study was to investigate the independent effect of nasal obstruction on sleep quality.