Imaging characteristics and clinical outcomes of biphenotypic sinonasal sarcoma.

Objectives: Biphenotypic sinonasal sarcoma (BSS) is a new, rare tumor characterized by concomitant neural and myogenic differentiation. The aim of this study is to describe the imaging characteristics and clinical outcomes of this neoplasm.

Methods: A retrospective review of BSS patients surgically treated within a tertiary academic health care system was performed.

Facial nerve venous malformation: A radiologic and histopathologic review of 11 cases.

Objective: The purpose of this article was to provide a combined pathologic and radiologic review of previous pathologically diagnosed facial nerve "hemangiomas" to confirm that these lesions are most characteristic of venous malformations rather than neoplasms.

Study Design: Retrospective radiologic, clinical, and histopathologic review of all patients with a previous pathologically diagnosed facial nerve hemangioma of the temporal bone who underwent computed tomography or magnetic resonance imaging (MRI) were included. A consensus radiologic review for characteristic features and pathologic analysis was performed.

Updated Imaging Features of Dysplastic Cerebellar Gangliocytoma.

Objective: The aim of this study was to perform an updated review of the imaging features of dysplastic cerebellar gangliocytoma (DCG).

Methods: Imaging findings were retrospectively reviewed in 14 patients with DCG. The analysis included size, location, cyst formation, calcification, intralesional hemorrhage, enhancement pattern, and apparent diffusion coefficient (ADC).

Neuroimaging abnormalities in patients with Cowden syndrome: Retrospective single-center study.

Background: We retrospectively reviewed the neuroimaging findings of patients with Cowden syndrome and determined their frequency in a single cohort.

Methods: Electronic medical records were queried from January 1999 to January 2017 to identify patients who fit the clinical criteria for diagnosis of Cowden syndrome with or without a documented mutation. Patients with brain MRI examinations were then identified.

Normal Variant Occipital Pneumatization.

Objective: Evaluate prevalence and pattern of occipital pneumatization (OP).

Patients: Individuals with imaging evidence of OP on computed tomography (CT).

Intervention(s): High resolution CT scans of the temporal bone.

Computed Tomography-Based Texture Analysis to Determine Human Papillomavirus Status of Oropharyngeal Squamous Cell Carcinoma.

Objective: To determine whether machine learning can accurately classify human papillomavirus (HPV) status of oropharyngeal squamous cell carcinoma (OPSCC) using computed tomography (CT)-based texture analysis.

Methods: Texture analyses were retrospectively applied to regions of interest from OPSCC primary tumors on contrast-enhanced neck CT, and machine learning was used to create a model that classified HPV status with the highest accuracy. Results were compared against the blinded review of 2 neuroradiologists.

Hypoglossal Canal Lesions: Distinctive Imaging Features and Simple Diagnostic Algorithm.

Objective: The objective of this study is to compare the prevalence of hypoglossal canal lesions and identify differentiating imaging features.

Materials And Methods: A 15-year retrospective review of lesions of the hypoglossal nerve and hypoglossal canal, excluding those in patients with metastasis or prior head and neck cancer and those treated with radiation or surgery, was performed. Clinical findings and lesion imaging features were documented.

Diagnosing Large Vestibular Aqueduct: Radiological Review of High-Resolution CT Versus High-Resolution Volumetric MRI.

Objectives: To compare the diagnostic yield of high-resolution volumetric T2-weighted MRI (HRT2-MRI) with high-resolution computed tomography (HRCT) for diagnosis of large vestibular aqueduct (LVA).

Study Design: Three board-certified neuroradiologists performed an independent, blinded radiological review for diagnosing LVA with 2:1 age-matched controls on patients with both HRCT and HRT2-MRI imaging.

Setting: Tertiary referral center.

Craniocervical Pneumatization: Estimation of Prevalence and Imaging of Treatment Response.

Objective: Estimate the prevalence of craniocervical pneumatization (CCP) and describe successful treatment of this condition with clinical and radiologic correlation.

Patients: Individuals with documented CCP on computed tomography (CT).

Intervention(s): CT scans of the head, temporal bone, face, neck, and cervical spine.

Maxillary sinus angiomyolipoma: A case report and overview.

Otolaryngologists are called upon to evaluate and treat sinonasal masses discovered incidentally on imaging studies. Although common conditions such as sinonasal polyps and mucus retention cysts predominate, it is prudent practice to formulate a differential diagnosis to identify unusual conditions. We present a case of a maxillary sinus mass in a 78-year-old man that was discovered incidentally on brain imaging and subsequently identified on biopsy as an angiomyolipoma (AML).

Computed tomographic angiography with three-dimensional reconstruction for transoral laser microsurgery.

Objective: To identify major arteries in relationship to large pharyngeal tumors during transoral laser microsurgery.

Study Design: Case series with planned data collection.

Setting: Mayo Clinic, Jacksonville, Florida.

Brain injury after cardiopulmonary arrest and its assessment with diffusion-weighted magnetic resonance imaging.

Objective: To characterize the frequency and pattern of diffusion-weighted imaging (DWI) abnormalities detected as part of brain magnetic resonance imaging (MRI) and their association with short-term neurologic outcomes in patients successfully resuscitated after cardiopulmonary arrest (CPA).

Patients And Methods: We retrospectively analyzed a case series of patients who experienced CPA between May 1, 2000, and April 29, 2004, at St Luke's Hospital in Jacksonville, Fla. Eligible patients required treatment by the Code Blue team and had 1 DWI study before discharge or death.

Spontaneous craniospinal hypotension.

Spontaneous cerebrospinal fluid (CSF) leak has been called "spontaneous intracranial hypotension," emphasizing the intracranial symptoms and imaging findings. We present a patient with spontaneous CSF leak whose initial spinal magnetic resonance imaging (MRI) findings were thought to represent epidural tumor or infection. Subsequent MRI examinations showed an improvement of both intracranial and spinal CSF hypotension findings coinciding with clinical symptom resolution.