Clinico-radiologic findings of entrapped inferior oblique muscle in a fracture of the orbital floor.

A 51-year old man presented with vertical and torsional diplopia after reduction of a blowout fracture at another hospital one year ago. He had no anormalies of head position and 14 prism diopters (PD) right hypertropia (RHT) in the primary position. In upgaze no vertical deviation was found, and hyperdeviation on downgaze was 35PD.

Sonographically guided fine needle aspiration of thyroid nodule: discrepancies between cytologic and histopathologic findings.

Purpose: To analyze the discrepancies between the cytologic results of sonographically (US)-guided fine needle aspiration (FNA) of thyroid nodules and final histopathologic results and to discuss the limitations of US-guided FNA.

Materials And Methods: The results of US-guided FNAs performed by a single experienced radiologist in 315 thyroid nodules in 292 patients (246 women, 46 men aged 12-79 years) were retrospectively correlated with their surgical pathologic results. The FNA results were classified as nondiagnostic, indeterminate, negative, or positive, whereas final pathologic diagnoses were classified as malignant or benign.

Diffusion-weighted magnetic resonance imaging in the syndrome of acute bilateral basal ganglia lesions in diabetic uremia.

In this report, we have presented a diabetic patient with uremia, in which acute Parkinsonism occurred, coupled with acute mental confusion, after a sudden increase in blood urea nitrogen and serum creatinin levels. Diffusion-weighted magnetic resonance imaging revealed a unique cytotoxic-type edema in the bilateral basal ganglia during the acute phase. Signal alterations were shown to regress in accordance with the normalized apparent diffusion coefficient (ADC) values, but irreversible cystic degeneration developed in the globus pallidus, with the very low preceding ADC values.

Inflammatory myofibroblastic tumor of the larynx.

Background: Inflammatory myofibroblastic tumor, composed of myofibroblastic spindle cells with acute and chronic inflammatory cells, is an unusual, benign solid mass that mimics a neoplastic process.

Methods: We report a rare case of a patient with a laryngeal inflammatory myofibroblastic tumor. Laryngoscopy demonstrated a submucosal mass involving the right false cord.

Detailed nodal features of cervical tuberculous lymphadenitis on serial neck computed tomography before and after chemotherapy: focus on the relation between clinical outcomes and computed tomography features.

Objective: To investigate the relation between clinical outcomes and nodal features on computed tomography (CT) in cervical tuberculous lymphadenitis (CTBL) before and after antituberculous chemotherapy.

Methods: Fifty-six patients with CTBL underwent CT before and after a 6- or 12-month course of standard chemotherapy. Three radiologists evaluated the nodal features on serial CT retrospectively, including calcification (no/punctuate/large), necrosis (no/eccentric/central), perinodal infiltrations (no/localized/extensive), and enhancing patterns (no/peripheral/homogeneous).

Cerebral white matter lesions and hypertension status in the elderly Korean: the Ansan Study.

There is evidence of an association of hypertension with white matter lesions (WMLs), leukoaraiosis, in the human brain in the United States, Europe and Japan. However, no study on this association has been reported in Korea. Community-dwelling elderly subjects aged over 61 years were randomly selected from samples of the Ansan Health Study, while their blood pressures (BPs) were measured using a highly standardized protocol.

Fluid infusion technique for ultrasound-guided percutaneous nephrostomy.

We describe a simple but useful technique for improving the visualization of the needle during ultrasound-guided percutaneous nephrostomy, especially suitable for obese patients.

Acinic cell carcinoma of the head and neck: radiologic-pathologic correlation.

Objective: To describe and correlate the imaging and pathologic findings of acinic cell carcinoma (ACC) in the head and neck.

Methods: We reviewed the radiologic findings of 12 patients with pathologically proven ACC in the head and neck. They were 6 males and 6 females (ages: 5-75 years, mean 36 years) who undergoing computed tomography (CT, n=9) and CT with magnetic resonance (MR) imaging (n=3).

Age-related changes in conventional and magnetization transfer MR imaging in elderly people: comparison with neurocognitive performance.

Objective: This study was designed to compare three different measures of the elderly human brain; the magnetization transfer ratio (MTR) histogram, the percentage of brain parenchymal volume, and the volume of T2 hyperintense areas in terms of correlations with the study subjects neurocognitive performance.

Materials And Methods: Thirty-five healthy community-dwelling elderly volunteers aged 60-82 years underwent dual fast spin-echo (FSE) imaging and magnetization transfer imaging. A semi-automated technique was used to generate the MTR histogram, the brain parenchymal volume, and the T2 lesion volume.

CT findings in Kikuchi disease: analysis of 96 cases.

Background And Purpose: Although CT findings of Kikuchi disease (KD), or histiocytic necrotizing lymphadenitis, are reported in several case reports, large-scale analysis of the disease has not been undertaken. We characterized the clinical and CT findings in a large group of patients with KD.

Methods: Between 1990 and 2002, 96 patients (68 women, 28 men; mean age, 24.

Maple syrup urine disease encephalopathy: a follow-up study in the acute stage using diffusion-weighted MRI.

Neonatal maple syrup urine disease (MSUD) is associated with diffuse oedema and characteristic MSUD oedema. We present a newborn infant with two coexisting different types of oedema. The myelinated white matter showed a marked decrease in the water apparent diffusion coefficient (ADC) compatible with cytotoxic oedema.

Moyamoya disease in a child with previous acute necrotizing encephalopathy.

A previously healthy 24-day-old boy presented with a 2-day history of fever and had a convulsion on the day of admission. MRI showed abnormal signal in the thalami, caudate nuclei and central white matter. Acute necrotising encephalopathy was diagnosed, other causes having been excluded after biochemical and haematological analysis of blood, urine and CSF.

Imaging findings of mantle cell lymphoma involving gastrointestinal tract.

Clinical manifestations and imaging findings of mantle cell lymphoma involving gastrointestinal tract were evaluated. The subjects were 7 cases of mantle cell lymphoma involving the gastrointestinal tract. All cases were pathologically confirmed in our hospital during the period from April 1994 to July 2000.