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Although the etiology of the three cases is different, the lesion site is involved in the central velocity storage mechanism. Conclusion The damage of central velocity storage mechanism may lead to the damage of feedback rotation signal correction pathway, and CPPV appears when the head position changes relative to gravity.Objective To compare the effect of hearing improvement after canal wall down mastoidectomy and tympanoplasty(CWDM) and canal wall up mastoidectomy and tympanoplasty(CWUM). Methods 88 patients who underwent CWDM or CWUM in 2014-2017 with complete follow-up data were retrospectively studied. There were 45 males and 43 females, aged 12-68 years old, and the average follow-up time was 12.3 months. Among them, 42 cases underwent CWDM and 46 cases underwent CWUM. A series of improvements were made in the clinical practice of CWDM (1) to expand the indications properly, including limited lesions with sclerotic mastoid and narrow tympanic sinus; (2) to form disciform cavity strictly during operation in order to retain the appropriate height of facial nerve crest; (3) to avoid the cleaning of mastoid cavity in the post-operation follow up, thus the operative cavity was effectively constricted; and (4) to transfer the temporal muscle flap in pneumatic mastoid to reduce the cavity. The condition of dry ear and the size the differences were not statistically significant (P>0.05). Conclusion Through the adjustment of indications and a series of intraoperative and postoperative improvements, CWDM can achieve the same effect of postoperative hearing improvement as CWUM.Metastatic spinal tumors are common, and their rising incidence can be attributed to the expanding aging population and increased survival rates among cancer patients. The decision-making process in the treatment of spinal metastasis requires a multidisciplinary approach that includes medical and radiation oncology, surgery, and rehabilitation. Various decision-making systems have been proposed in the literature in order to estimate survival and suggest appropriate treatment options for patients experiencing spinal metastasis. However, recent advances in treatment modalities for spinal metastasis, such as stereotactic radiosurgery and minimally invasive surgical techniques, have reshaped clinical practices concerning patients with spinal metastasis, making a demand for further improvements on current decision-making systems. In this review, recent improvements in treatment modalities and the evolution of decision-making systems for metastatic spinal tumors are discussed.
This was a prospective cross-sectional study.

The aim was to describe the effect of patient positioning, from supine to lateral decubitus position, on the width of the L5/S1 anterior disk space defined by the great vessels.

The application of the lateral decubitus position interbody fusion has been rapidly increasing; however, there are concerns regarding the access to the lumbosacral region due to the great vessels, which necessitates further morphometric data.

A total of 20 consecutive live patients awaiting lumbar surgery were subjected to two magnetic resonance imaging scans on the same day in both supine and lateral decubitus positions at a single center to investigate the anterior L5/S1 disk space.

The bare anterior L5/S1 disk window was present in all patients of this study population, and the mean width was 27 mm in the supine and 22 mm in the lateral decubitus position, with a mean reduction of 5.2 mm between the positions. The oblique corridor angle was measured at a mean of 33°.

The bare window of L5/S1 disk space was present within this population group, and it was found to be mobile and changed significantly with patient positioning. Therefore, the spine surgeon or the access surgeon must consider the increased potential vascular risk during disk access in lateral decubitus anterior lumbar interbody spinal fusion surgery.
The bare window of L5/S1 disk space was present within this population group, and it was found to be mobile and changed significantly with patient positioning. Therefore, the spine surgeon or the access surgeon must consider the increased potential vascular risk during disk access in lateral decubitus anterior lumbar interbody spinal fusion surgery.
Pulmonary veno-occlusive disease (PVOD) is a rare form of pulmonary hypertension. It is often underdiagnosed or misdiagnosed as idiopathic pulmonary arterial hypertension (PAH). Inappropriate treatment may cause worsening of symptoms which may lead to fatal outcomes. Anesthetic considerations and management for pulmonary hypertension are well described, but few anesthesiologists are aware of the entity of PVOD and its management.

We report a case of PVOD in a 73-year-old female who was on concurrent aspirin and anagrelide, requiring emergent open femoral hernia repair.

PVOD and incarcerated femoral hernia INTERVENTION Combined spinal-epidural (CSE) was performed to enable the surgery.

Surgery was completed successfully under central neuraxial anesthesia and the patient remained stable and comfortable throughout, avoiding the need for general anesthesia. Due to the concurrent aspirin and anagrelide therapy, significant bleeding from the CSE puncture site was observed immediately post-operatively. This fferentiate PVOD from PAH. PVOD has unique anesthetic considerations due to the controversial use of pulmonary vasodilators. This case also emphasizes the importance of active anticipation of potential issues and adequate follow up.
It is important to differentiate PVOD from PAH. PVOD has unique anesthetic considerations due to the controversial use of pulmonary vasodilators. This case also emphasizes the importance of active anticipation of potential issues and adequate follow up.
Ocular siderosis is arrested by the removal of intraocular foreing body (IOFB). The progression of ocular siderosis is very rare and few reports demonstrate the optical coherence tomographic (OCT) findings.

A 55-year-old Asian man presented to our clinic with the chief complaint of decreased vision in his left eye for 5 months. CD38 inhibitor 1 cell line On slit lamp examination of the left eye, the corneal stroma had a rust-colored hue, and the retina was not visible due to vitreous opacity. An orbital computed tomography was ordered considering the possibility of left IOFB, which confirmed the presence of a vitreous IOFB. On the next day, he had a continuous curvilinear capsulorrhexis with phacoemulsification and intraocular lens implantation, pars plana vitrectomy, and removal of IOFB in the left eye. Six years later, he revisited our clinic. On slit lamp examination, the corneal haziness had worsened, and the iris showed heterochromia resembling the spokes of a wheel in the left eye.

Ocular siderosis.

Anterior and posterior segment OCT was performed.

The anterior segment OCT showed linear hyperreflectivity on the anterior corneal stroma just beneath the Bowman's layer. The posterior segment OCT showed inner retinal degeneration observed at the parafoveal area.

Ocular siderosis progression can happen after the removal of IOFB. The swept source OCT might be useful to assess the cornea and retina in ocular siderosis patient with corneal haziness.
Ocular siderosis progression can happen after the removal of IOFB. The swept source OCT might be useful to assess the cornea and retina in ocular siderosis patient with corneal haziness.
Lymphoid interstitial pneumonia is a rare benign pulmonary lymphoproliferative disorder usually presenting with a sub-acute or chronic condition and frequently associated with autoimmune disorders, dysgammaglobulinemia, or infections.

A 74-year-old woman with no past medical history presented with acute dyspnea, nonproductive cough, hypoxemia (room air PaO2 48 mmHg) and bilateral alveolar infiltrates with pleural effusion. Antibiotics and diuretics treatments did not induce any improvement. No underlying condition including cardiac insufficiency, autoimmune diseases, immunodeficiency, or infections was found after an extensive evaluation. Bronchoalveolar lavage revealed a lymphocytosis (60%) with negative microbiological findings. High-dose intravenous corticosteroids induced a mild clinical improvement only, which led to perform a surgical lung biopsy revealing a lymphoid interstitial pneumonia with no sign of lymphoma or malignancies.

Acute severe idiopathic lymphoid interstitial pneumonia.

Ten days after the surgical lung biopsy, the patient experienced a dramatic worsening leading to invasive mechanical ventilation. Antibiotics and a new course of high-dose intravenous corticosteroids did not induce any improvement, leading to the use of rituximab which was associated with a dramatic clinical and radiological improvement allowing weaning from mechanical ventilation after 10 days.

Despite the initial response to rituximab, the patient exhibited poor general state and subsequent progressive worsening of respiratory symptoms leading to consider symptomatic palliative treatments. The patient died 4 months after the diagnosis of lymphoid interstitial pneumonia.

Idiopathic lymphoid interstitial pneumonia may present as an acute severe respiratory insufficiency with a potential transient response to rituximab.
Idiopathic lymphoid interstitial pneumonia may present as an acute severe respiratory insufficiency with a potential transient response to rituximab.
Choroidal osteoma (CO) is a rare benign ocular tumor characterized by ossifying choroid lesions. To the best of our knowledge, this is the first detailed report to describe the optical coherence tomography angiography (OCTA) findings of choroidal neovascularization (CNV) complicated by a rare decalcified CO following intravitreal aflibercept injection.

A 26-year-old woman presented with a spontaneous but painless reduction in visual acuity in her left eye that had commenced 5 days prior.

Clinical manifestations and multimodal imaging, including OCTA, spectral-domain optical coherence tomography, fundus fluorescein angiography and indocyanine green angiography, indicated decalcified CO with CNV.

After receiving an appropriately detailed explanation of the procedure, the patient was treated via intravitreal aflibercept(2.0 mg) injection once.

One month after the therapy, OCTA revealed that the flow areas of CNV were narrowed, the best-corrected visual acuity was improved to 20/30, however, 2 months follow-up OCTA revealed that the CNV reoccurred, the best-corrected visual acuity was dropped to 20/50.

Intravitreal aflibercept injection was an effective treatment for CO with CNV, but the effects may not last long. The OCTA findings provide a better appreciation of evaluating the effects of intravitreal aflibercept injection for CO complicating CNV.
Intravitreal aflibercept injection was an effective treatment for CO with CNV, but the effects may not last long. The OCTA findings provide a better appreciation of evaluating the effects of intravitreal aflibercept injection for CO complicating CNV.To evaluate the effect of the severity of spinal stenosis on the peripheral nerves of lower extremities by nerve conduction study (NCS).One hundred fifteen patients with lumbar spinal stenosis were recruited retrospectively in this study. The grading system for lumbar stenosis was used based on the degree of separation of the cauda equina. The degree of cauda equina damage caused by lumbar central stenosis was assessed by NCS of peripheral nerves. Multiple regression analysis was used to estimate which factors affect peripheral nerve injury, according to the presence of DM, total grading of lumbar central stenosis, and age.Only age was associated with low amplitude in the tibial and peroneal motor NCS in the multiple regression analysis. The severity of the compression of the cauda equina, caused by spinal stenosis, did not statistically significantly affect the NCS values of nerves on the lower extremities.In conclusion, the cauda equina is resilient against degenerative lumbar central stenosis. Unlike changes caused by peripheral nerve entrapment, lumbar central stenosis did not affect the findings of NCS on the peripheral nerve of lower extremities.
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