Biomedical subjects

E Cardinal

Publications and source records attributed to E Cardinal.

26 records · Page 2Linked to original sources

PubMed1996

Spinal metastases as a first presentation of malignant astrocytoma.

A 46-year-old man presented with low dorsal pain and paresthesia. Computed tomography showed an osteolytic lesion involving most of the vertebral body and the left pedicle of the 12th thoracic vertebra (T12). Contrast-enhanced magnetic resonance imaging (MRI) of the spine showed an enhancing soft-tissue mass that involved the T11 and T12 vertebral bodies, as well as that of the first lumbar vertebra; the mass caused cord compression. Another lesion was identified at T9. The findings of percutaneous needle aspiration biopsy of the lesion were consistent with metastatic astrocytoma, a diagnosis confirmed at surgery. MRI of the brain showed an asymptomatic lesion of the left temporal lobe; histologic confirmation of malignant astrocytoma was obtained by stereotactic biopsy. This report shows that metastatic bone disease secondary to malignant astrocytoma may manifest itself before the primary lesion becomes symptomatic. This presentation of astrocytoma was unusual because there were no symptoms of the intracranial tumour and because metastatic disease to the bones is less common than to the chest and the lymph nodes.

Astrocytoma↗

PubMed1995

Bupivicaine arthrography of the post-arthroplasty hip.

Addition of bupivicaine, a medium-length-acting local anesthetic, to the contrast material in arthrography of total hip prostheses provides reliable information as to whether the source of pain is intracapsular or extracapsular. In 12 surgically proven cases, complete relief of pain after bupivicaine injection correctly identified an intracapsular source of pain in 10, with only 1 false-positive and 1 false-negative. These results compare favorably with the results of the contrast arthrograms in these patients in localizing the pain even if a specific diagnosis could not be reached. Bupivicaine as an adjunct to contrast material during arthrography provides additional information useful in management decisions regarding the necessity of revision arthroplasty.

Anesthetics, Local↗

PubMed1994

Case report 873: Lipoma arborescens (villous lipomatous proliferation of the synovial membrane).

A case of lipoma arborescens with typical features was presented. MR imaging established the preoperative diagnosis by visualizing the typical frond-like synovial projections containing fatty tissue. The extent of joint involvement must be fully documented because an open synovectomy is most appropriate in the management of this disease. Although lipoma arborescens is a rare condition, it is important to recognize the MR features due to the large volume of MR examinations of the knee which are performed.

Aged↗

PubMed1994

Occult dorsal carpal ganglion: comparison of US and MR imaging.

PURPOSE: To evaluate the usefulness of ultrasound (US) and magnetic resonance (MR) imaging in patients suspected of having an occult dorsal carpal ganglion. MATERIALS AND METHODS: The authors prospectively studied US and MR images of 14 wrists in 13 consecutive patients suspected of having an occult dorsal carpal ganglion. RESULTS: Eleven dorsal carpal ganglia were identified with US and nine with MR imaging. One patient refused the MR imaging study. Of two equivocal cases at MR imaging, one was a ganglion and another was a compressible capsular recess, as determined at US. One ganglion was missed with both techniques. The average diameter of the ganglion cysts was 4.9 mm. CONCLUSION: MR imaging and US are equally effective in the detection of occult dorsal carpal ganglia. Because of its dynamic capabilities and lower cost, US should be the initial imaging procedure for suspected occult dorsal carpal ganglia.

Adult↗

PubMed1994

Imaging and differential diagnosis of masses within a joint.

Careful analysis of conventional radiographs remains the first step in the investigation of intra-articular abnormalities. However, other imaging techniques, such as ultrasonography, arthrography, computed tomography and magnetic resonance imaging, may add critical information that allows the correct diagnosis. The authors discuss the evaluation of masses within a joint on the basis of plain film analysis, as well as the contribution of additional imaging techniques to the differential diagnosis.

Arthritis, Infectious↗

PubMed1992

Imaging pediatric hip disorders and residual dysplasia of adult hips.

The application of newer imaging modalities such as ultrasound, CT, and MR imaging has made a major contribution to the understanding of pediatric hip disorders. Multiplanar imaging has been a major advancement in the depiction of the complex hip joint anatomy. Direct visualization of cartilage in the immature joint is now possible with MR imaging. Sophisticated computer software programs allow three-dimensional reconstruction of the joint from CT and MR data. Manipulation of three-dimensional images allows preoperative simulation of proposed surgical reorientation of hips with deformity resulting from dysplasia and Legg-Calvé-Perthes disease.

Adult↗

PubMed1990

Agenesis of the corpus callosum and colloid cyst of the third ventricle: magnetic resonance imaging of an unusual association.

Agenesis of the corpus callosum is usually associated with brain malformations or with anomalies outside the central nervous system. A colloid cyst of the third ventricle may give rise to hydrocephalus and even sudden death. The authors report the case of a 23-year-old man in whom both these uncommon conditions coexisted. The findings on computed tomography and magnetic resonance imaging are described. The colloid cyst was completely excised through a frontal craniotomy and the patient made a smooth recovery.

Adult↗

PubMedDate not supplied

Musculoskeletal infections: US manifestations.

One of the most important prognostic factors in patients with musculoskeletal infections is the delay in establishing therapy. Early diagnosis of septic arthritis requires analysis of joint fluid. Ultrasonography (US) is a rapid, portable, sensitive technique for confirming the presence of joint effusions. The study can be easily repeated for follow-up of lesions. US allows real-time guidance of fluid aspiration and can reduce the risk of contaminating other anatomic compartments, especially in the hands, wrists, and feet. Radiography provides complementary information and should be performed in conjunction with US. US is the imaging modality of choice for diagnosis of superficial abscesses. Dynamic compression with the US probe and color Doppler imaging can facilitate detection of superficial abscesses. US may help in the early diagnosis of osteomyelitis by demonstrating subperiosteal or juxtacortical fluid collections and by providing guidance for aspiration of these collections. Evaluation of osseous involvement requires additional imaging; a US examination with normal results does not allow exclusion of bone infection. US is not degraded by metallic artifact and may be useful in cases of osteomyelitis complicating metallic fixation in an extremity. After initial radiography, US can play an important role in the management of musculoskeletal infections.

Abscess↗