Volume of components of labyrinth: magnetic resonance imaging study.

OBJECTIVE: To determine total inner ear fluid volume and cochlear and semicircular canal/vestibule volumes of a normal population to form a base for dimensional abnormalities of inner ear structures. STUDY DESIGN: Cross-sectional. SETTING: Academic otology and radiology practices. PATIENTS: Twenty-nine healthy volunteers (13 male patients and 16 female patients with an average age of 31 yr) without any known history of intrauterine infection or any exposure to ototoxic agents and no abnormality at physical examination from the standpoint of hearing loss were included. INTERVENTIONS: Twenty-nine volunteers underwent magnetic resonance imaging of the temporal region by means of thin-section T2-weighted sequences. The images were evaluated by the radiologist for the presence of any gross configurational abnormality. Fluid volume of each inner ear and components of labyrinth (cochlea, semicircular canals/vestibule) were calculated with the help of an online work station. MAIN OUTCOME MEASURE: To determine the volume of components of the labyrinth and total inner ear fluid, which may form a base for future studies about sensorineural hearing loss. RESULTS: The volumes of total inner ear fluid, cochlea, and semicircular canals/vestibule were calculated. The mean and standard deviation of total inner ear fluid volume, cochlear volume, and semicircular canal/vestibule volume were obtained for each volunteer. Results were assessed with the help of statistical tests. CONCLUSION: There was no statistically significant difference between right and left inner ear fluid volumes of male and female subjects. There was also no statistical difference between right and left inner ear volumes when age and sex were not concerned. During evaluation of volumes according to sex, the difference between right and left inner ear fluid volumes was also assessed. Left semicircular canal/vestibule volume of female subjects were found to be higher than that of male subjects. The difference between right and left semicircular canal/vestibule volumes of female subjects was higher than the difference between right and left semicircular canal/vestibule volumes of male subjects.

Multifocal osteoarticular tuberculosis: a case report.

Osteoarticular tuberculosis is a quite uncommon form of extrapulmonary tuberculosis. Difficulties in diagnosis often lead to delayed treatment, sometimes with devastating consequences for patients. We report herein a case of multifocal osteoarticular tuberculosis of insidious onset with no history of prior health problems or constitutional signs and symptoms. Despite widespread osteoarticular involvement, the outcome of the patient was favorable after the management. Osteoarticular tuberculosis must be considered in patients with insidious musculoskeletal symptomatology.

Accessory soleus muscle.

Accessory soleus muscle is an uncommon anatomical variant that may present as a soft-tissue mass in the posteromedial region of the ankle. It is congenital in origin but usually presents in the second or third decade of life. Although it is a rare entity, accessory soleus muscle should be included in the differential diagnosis of soft-tissue swelling of the ankle. Awareness of the clinical presentation and specific findings of computed tomography, magnetic resonance imaging, and electromyography help with diagnosis without surgical exploration. We describe a 30-year-old patient with accessory soleus muscle. Magnetic resonance imaging features of the case are described, and the literature is briefly reviewed.

Suprasellar germ cell tumor with subarachnoid seeding MRI and MR spectroscopy findings.

A case of suprasellar germinoma with subarachnoid seeding is presented. Patient had a history of depression unresponsive to drug therapy and recently developed diabetes insipidus. MR imaging revealed a huge suprasellar mass, heterogenous in signal intensity due to cystic components. MR spectroscopy of the mass showed prominent lipid peak suggesting high malignant potential.

Magnetic resonance imaging of cochlear modiolus: determination of mid-modiolar area and modiolar volume.

Modiolar deficiency has been reported as representing the mildest form of cochlear dysplasia. In this study the authors aimed to determine baseline values of the mid-modiolar area and modiolus volume in normal subjects. In this way they aimed to improve the detection of previously underdiagnosed subtle cochlear dysplasia in patients with sensorineural hearing loss.

Intraosseous malignant peripheral nerve sheath tumor with local recurrence, lung metastases and death.

Malignant peripheral nerve sheath tumor (MPNST) is almost always seen in soft tissue. Skeletal involvement by MPNST is uncommon and usually results from secondary invasion. Primary MPNSTs are exceptionally rare. We report a surgically proven case of intraosseous MPNST, with local recurrence and lung metastasis during follow-up. The imaging and histological features of the case are described and the literature on the subject briefly reviewed.

Clavicular osteoma associated with bronchial osteomas.

Osteoma is a rare benign tumor, composed of bony tissues. It predominantly involves the skull but rarely the long bones. In this report we present a case of clavicular osteoma associated with bronchial osteomas. This association has not previously been reported. There was no evidence of Gardner's syndrome.

Desmoplastic fibroma of bone: case report.

Desmoplastic fibroma of bone is an exceedingly rare tumor that was first described by Jaffe in 1958 [1]. It has a high incidence of local recurrence after surgical resection. It is usually seen in young patients and involves mandible and long bones. It has histological resemblance to the desmoid tumor of the abdominal wall. We report a surgically proven case of desmoplastic fibroma of bone with local aggressiveness and recurrence during follow-up. The radiograph, CT imaging features, radiological and pathological differential diagnosis of the case are described, and literature is briefly reviewed.

Imaging in the diagnosis of symptomatic forearm muscle herniation.

Muscle herniation can be defined as protrusion of a portion of muscle through an acquired or congenital defect of enclosing fascia. Although it is usually a cosmetic problem, it can lead to local pain and tenderness after prolonged exertion. In this report, we present a case of flexor digitorum superficialis muscle herniation in a 58-year-old man. The radiographic, ultrasonographic and magnetic resonance imaging findings are described with dynamic examination, permitting demonstration of muscle herniation through the fascial defect during muscle contraction.