Vestibular Schwannoma in an Elderly Patient Presenting With Tinnitus and Vertigo

2015 ◽  
Vol 8 (2) ◽  
pp. 195-200
Author(s):  
Seatbyul D. Lee
Keyword(s):  
Vestibular Schwannoma ◽  
Acoustic Neuroma ◽  
Diagnostic Tests ◽  
Incidental Findings ◽  
Benign Tumor ◽  
Unknown Etiology ◽  
Resonance Imaging ◽  
Eighth Cranial Nerve ◽  
Asymptomatic Patients ◽  
Magnetic Resonance Imaging Mri

The vestibular schwannoma (VS), previously known as acoustic neuroma, is a benign tumor that originated from the edge of the Schwann’s sheath of the eighth cranial nerve. It is considered the most frequently diagnosed intracranial benign tumor, of low lethality rate, and unknown etiology. Because of improvement of diagnostic tests and widespread use of magnetic resonance imaging (MRI) and computed tomography (CT) scan, the prevalence of diagnosed acoustic neuroma has increased. Current studies suggest rate may be higher considering undiagnosed asymptomatic patients and incidental findings on radiological examinations in older adults. The etiology of VS is still unclear, and investigations for risk factors are limited. Symptoms at presentation can vary from asymptomatic to complete hearing loss. Medical management can include a “wait and watch” approach, surgical resection, or radiation therapy. The decision depends on the patient’s age at identification, tumor size, severity of symptoms, patient’s preference, and other medical conditions.

Audit of regional screening guidelines for vestibular schwannoma

1998 ◽  
Vol 112 (9) ◽  
pp. 860-864 ◽  
Author(s):  
P. J. D. Dawes ◽  
J.-P. Jeannon
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Posterior Fossa ◽  
Vestibular Schwannoma ◽  
Acoustic Neuroma ◽  
Resonance Imaging ◽  
Posterior Fossa Tumour ◽  
Screening Guidelines ◽  
Magnetic Resonance Imaging Mri

AbstractAn audit of 334 patients who underwent magnetic resonance imaging (MRI) as investigation for a possible diagnosis of vestibular schwannoma was carried out to assess adherence to previously agreed screening guidelines. This represents one year's activity. A posterior fossa tumour was identified in 12 patients. Scan requests were judged to be inappropriate for 28 cases. The issues surrounding the screening for acoustic neuroma are discussed.

scholarly journals Mastoid Bone involved by Pleomorphic Adenoma

2016 ◽  
Vol 8 (3) ◽  
pp. 111-112
Author(s):  
Pradipta K Parida
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Parotid Gland ◽  
Pleomorphic Adenoma ◽  
Surgical Planning ◽  
Benign Tumor ◽  
Review Of Literature ◽  
Resonance Imaging ◽  
Mastoid Bone ◽  
Magnetic Resonance Imaging Mri

ABSTRACT Pleomorphic adenoma is a benign tumor of the salivary glands, most commonly affecting the parotid gland. Pleomorphic adenoma of the ear is rare. The use of imaging modalities, especially magnetic resonance imaging (MRI), is particularly useful in localizing and surgical planning of these tumors. We present a case of pleomorphic adenoma invading the mastoid cortical bone, with review of literature. How to cite this article Vamanshankar H, Parida PK. Mastoid Bone involved by Pleomorphic Adenoma. Int J Otorhinolaryngol Clin 2016;8(3):111-112.

scholarly journals Calcifying fibrous tumor of the rectum - a case report

2020 ◽  
Vol 48 (2-3) ◽  
pp. 119-123
Author(s):  
Tomislav Pavlović ◽  
◽  
Rosana Troskot-Perić ◽  
Sanja Trtica ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Intestinal Tract ◽  
Benign Tumor ◽  
Rectal Wall ◽  
Fibrous Tissue ◽  
Unknown Etiology ◽  
Dystrophic Calcification ◽  
Resonance Imaging ◽  
Calcifying Fibrous Tumor ◽  
Fibrous Tumor

A calcifying fibrous tumor (CFT) is a benign tumor of unknown etiology. A calcifying fibrous tumor is rare in the intestinal tract. A calcifying fibrous tumor is characterized by hyalinized collagenous fibrous tissue, psammomatous or dystrophic calcification, and focal lymphoplasmacytic infiltrates on histology. Magnetic resonance imaging is the standard method for evaluating the lesions of the rectum, and CFTs should be considered in differentiating the rectal wall tumors. Herein, we report a case of a 68-year-old man with a rectal wall CFT.

Abnormal MRI of the Lumbar Spine without Back Pain

2016 ◽  
Author(s):  
Christoph I. Lee
Keyword(s):  
Magnetic Resonance Imaging ◽  
Back Pain ◽  
Lumbar Spine ◽  
Incidental Findings ◽  
Clinical Implications ◽  
Resonance Imaging ◽  
Clinical Context ◽  
Additional Information ◽  
Study Methodology ◽  
Magnetic Resonance Imaging Mri

This chapter, found in the back pain section of the book, provides a succinct synopsis of a key study examining incidental findings on magnetic resonance imaging (MRI) of the lumbar spine in patients without back pain. This summary outlines the study methodology and design, major results, limitations and criticisms, related studies and additional information, and clinical implications. The study showed that many people without back pain have disk bulges or protrusions on imaging of the lumbar spine, but that these findings are frequently coincidental and should not necessarily lead to further tests or interventions. In addition to outlining the most salient features of the study, a clinical vignette and imaging example are included in order to provide relevant clinical context.

A cost effective screening protocol for vestibular schwannoma in the late 90s

1996 ◽  
Vol 110 (12) ◽  
pp. 1129-1132 ◽  
Author(s):  
K. V. Ravi ◽  
S. C. Wells
Keyword(s):  
Vestibular Schwannoma ◽  
Imaging Modality ◽  
Cost Effective ◽  
Resonance Imaging ◽  
Conventional Tests ◽  
Screening Protocol ◽  
Hospital Visits ◽  
Magnetic Resonance Imaging Mri ◽  
Clinical Records ◽  
The Cost

AbstractMagnetic resonance imaging (MRI) is the imaging modality of choice in diagnosing vestibular schwannoma (VS). Perceived high costs have prevented clinicians from using it as a screening investigation, although MR scanners are now widely available in the United Kingdon. In a retrospective study, the clinical records of all the patients who presented to the ENT department of Taunton and Someerset NHS Trust with suspected symptoms of VS during the year 1994 were analysed. The cost of confirming or refuting the diagnosis of VS in each patient ranged from £220.72 to £580.31 depending on the number of hospital visits and investigations performed. This study shows that the routine use of MR scanning for detection of VS is cost effective and more effective than the use of conventional tests.

Meningioma in the internal auditory canal

2001 ◽  
Vol 115 (1) ◽  
pp. 48-49 ◽  
Author(s):  
P. Martinez Devesa ◽  
M. J. Wareing ◽  
D. A. Moffat
Keyword(s):  
Magnetic Resonance Imaging ◽  
Differential Diagnosis ◽  
Magnetic Resonance ◽  
Histological Examination ◽  
Vestibular Schwannoma ◽  
Internal Auditory Canal ◽  
Resonance Imaging ◽  
Translabyrinthine Approach ◽  
Magnetic Resonance Imaging Mri

A case is presented of an entirely intracanalicular meningioma in a 48-year-old woman that was excised via a conventional translabyrinthine approach to the internal auditory canal (IAC). Pre-operative magnetic resonance imaging (MRI) suggested that the tumour was a vestibular schwannoma (VS). Histological examination confirmed the intra-operative impression that the tumour was a meningioma. Although VS is by far the commonest intracanalicular tumour, the differential diagnosis includes meningioma. MRI is unable to distinguish between these two entities when the tumour is located entirely in the internal auditory canal.

scholarly journals Incidental Findings in Magnetic Resonance Imaging (MRI) Brain Research

2008 ◽  
Vol 36 (2) ◽  
pp. 315-319 ◽  
Author(s):  
Charles A. Nelson
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Incidental Findings ◽  
Brain Research ◽  
The Body ◽  
7 Tesla ◽  
X Rays ◽  
Resonance Imaging ◽  
Imaging Tool ◽  
Magnetic Resonance Imaging Mri

Magnetic resonance imaging (MRI) is a noninvasive imaging tool that utilizes a strong magnetic field and radio frequency waves to visualize in great detail organs, soft tissue, and bone. Unlike conventional x-rays (including computed tomography [CT]), there is no exposure to ionizing radiation and at most field strengths (generally below 7 Tesla) the procedure is considered safe for nearly every age group. Because it is non-invasive (i.e., does not break the skin or harm the body) and possesses excellent spatial resolution (down to millimeters), the use of MRI as a research tool has increased exponentially over the past decade. Uses have ranged from add-ons to a clinical study (e.g., after scanning a child who has fallen from a bicycle, the radiologist might do an extra sequence to explore ways of obtaining higher resolution images) to studies of brain development in typically developing children. In addition, a major effort has been made in recent years to use MRI to study brain function (so-called “functional MRI” [fMRI]). Because the clinical utility of fMRI has not yet been realized, fMRI is still considered highly exploratory, and we cannot yet identify incidental findings of a functional (as opposed to structural) nature.

scholarly journals Pleural-Based Intrathoracic Cystic Lymphangioma in an Infant Mimicking a Pneumonia

2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Zev Frimer ◽  
Daniel Fink ◽  
Ruth Cytter-Kuint ◽  
Victoria Doviner ◽  
Elie Picard
Keyword(s):  
Benign Tumor ◽  
Histopathological Examination ◽  
Cystic Lymphangioma ◽  
Cervical Region ◽  
Resonance Imaging ◽  
Mri Scan ◽  
Radiographic Findings ◽  
First Case ◽  
Magnetic Resonance Imaging Mri ◽  
One Year

Cystic lymphangioma is an uncommon benign tumor that occurs primarily in children in the cervical region. We report the first case of a pleural-based cystic lymphangioma in an infant. The patient was admitted for RUL pneumonia. Because of the persistence of the radiographic findings despite clinical improvement, a computed tomography (CT) and a magnetic resonance imaging (MRI) scan were performed. They showed a multiloculated cystic lesion in the superior posterior right hemithorax. A surgical procedure was performed with complete resection of the tumor. Histopathological examination showed a pleural-based intrathoracic multicystic lymphangioma. One year after the surgery, the patient feels well without any sign of recurrence.

Nerve origin of the acoustic neuroma

2001 ◽  
Vol 115 (5) ◽  
pp. 376-379 ◽  
Author(s):  
Atsushi Komatsuzaki ◽  
Atsunobu Tsunoda
Keyword(s):  
Acoustic Neuroma ◽  
Japanese Patients ◽  
Vestibular Nerve ◽  
Surgical Removal ◽  
Resonance Imaging ◽  
Acoustic Neuromas ◽  
Anatomical Basis ◽  
Inferior Vestibular Nerve ◽  
Magnetic Resonance Imaging Mri ◽  
The Individual

Two hundred and seventy-one Japanese patients who underwent surgical removal of neuroma from the cerebello-pontine angle using the translabyrinthine approach were retrospectively reviewed in order to investigate the nerve origin on an anatomical basis. In 269 out of the 271 cases, the origin of the neuromas was identified. Among these cases, 84.8 per cent of tumours originated from the inferior vestibular nerve (IVN), followed by the superior vestibular nerve (SVN) (8.9 per cent). Of the 5.6 per cent of tumours arising from the vestibular nerve, however, it could not be determined whether they originated from the SVN or IVN. Two cases of neuromas originating from the facial nerve were seen (0.7 per cent). No neuroma arose from the cochlear nerve.Currently, the diagnosis of acoustic neuromas is best made with Gd-enhanced magnetic resonance imaging (MRI). However, our data indicate that the development of a functional test of the individual IVN can be useful for screening most cases of acoustic neuroma and in facilitating their early diagnosis.

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