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Biomedical subjects

A Wackenheim

Publications and source records attributed to A Wackenheim.

At least 19 recordsLinked to original sources
PubMed1992

Neurofibromatosis with dural ectasia and bilateral symmetrical pedicular clefts: report of two cases.

We present two cases of bilateral, symmetrical pedicular clefts associated with dural ectasia in von Recklinghausen's disease (neurofibromatosis). In one case the pedicular cleft was at the T12 level, while in the other it was at L4, and was responsible for spondylolisthesis. Two hypotheses are advanced to explain the cleft: (1) a congenital, dysplastic osseous defect and (2) bilateral stress fractures related to thinning of the pedicle caused by dural ectasia.

Adult↗
PubMed1992

Contribution of MRI in supracardiac total anomalous pulmonary venous drainage.

A case of supracardiac total anomalous pulmonary venous drainage (TAPVD) in an infant aged 2 1/2 months is presented. Diagnosis was established non invasively by magnetic resonance image (MRI). Not only did MRI precisely depict the anomalous venous pathway but it moreover securely excluded pulmonary venous obstruction.

Echocardiography, Doppler↗
PubMed1991

[Indications of magnetic resonance imaging in congenital cardiopathies in neonatal period. Apropos of 54 cases].

Between February 1988 and July 1989, the authors used magnetic resonance imaging (MRI) to study 54 newborn infants aged between 2 and 35 days and suspected of congenital heart disease. All children also underwent echocardiography and 7 angiography during the neonatal period (13% of children studied). MRI was well tolerated and there were no adverse events. MRI proved to be complementary to echocardiography in several lesions affecting the great vessels of the base and the left atrial region. Agreement between angiography and MRI results was very good, with MRI being more useful in one case. MRI enables full and non-invasive postoperative follow-up. In conclusion, despite the great heterogenicity of the cardiac malformations studied and which requires a degree of caution, the authors feel that MRI is a second line investigation after echocardiography. It may limit the indications of angiography. Its own indications are the retrocardiac region, the main arteriovenous vessels of the base and postoperative follow-up in congenital heart disease. The development of techniques such as angio RM will further modify data in the future.

Echocardiography↗
PubMed1989

Computed tomography of lumbar apophyseal joint lipoma: report of three cases.

The authors report three cases of lumbar apophyseal joint lipoma located at the L4/L5 or L5/S1 level. CT scan makes the diagnosis easily possible; indeed erosive changes with enlargement of the upper portion of the lumbar articular joint and anterior displacement of the top of the superior facet are associated with intra-articular fatty densities. Clinical symptoms are rarely encountered and may be related to narrowing of the upper portion of the intervertebral foramen.

Adult↗
PubMed1989

[Radiology of the cervical spine].

The author describes some particularities seen in the abnormal or pathological image of the cervical spine: the osteolysis of the cortical bone in the spinous processes, the "Y" shaped course of the corporeal veins, the notch in interspinous bursitis, and the main forms of constitutional stenosis of the cervical canal.

Bursitis↗
PubMed1988

Radiology of posterior lumbar apophyseal ring fractures: report of 13 cases.

The authors report radiological findings in 13 cases of avulsion of the posterior lumbar apophyseal ring. The lesion affected young adults in 10 cases and adolescents in 3 cases. The lesion involved the inferior endplate of L4 in 11, and of L5 in 1 patient, and of L3 in 1 patient. 6 patients presented with unilateral sciatica, 3 with bilateral sciatica, and 4 with low back pain. Acute spinal trauma was evident only in 2 adolescents. Radiological recognition of the lesion was possible on plain films in 9 cases. CT demonstrates association of avulsion of the posterior vertebral apophyseal ring and herniated disc in all cases. Avulsion of the posterior apophyseal ring has to be differentiated from posterior longitudinal ligament, annulus, or herniated disc calcifications, as well as from posterior degenerative ridge osteophytes. Controversy about physiopathology of the lesion remains: weakness of the apophyseal ring during childhood and in patients with Scheuermann's disease may explain avulsion of the apophyseal ring in association with median disc herniation.

Adolescent↗
PubMed1988

A dysplasic origin of the "fat C2 body".

The authors recall the traumatic etiology of the so-called "fat C2" and describe a non traumatic origin of this radiological sign in a case of unusual ossification of the C2 body.

Cervical Vertebrae↗
PubMed1988

Multiple sclerosis and corpus callosum atrophy: relationship of MRI findings to clinical data.

Among 110 patients (45 men, 65 women), aged 15 to 66, with clinical and/or biological diagnosis of multiple sclerosis (MS), severe to moderate corpus callosum (CC) atrophy was observed in 67 (60%) patients. Correlation between CC atrophy, brain atrophy, duration and severity of clinical symptoms, and high signal white matter areas, was carried out in 90 patients. Mean age was 46 years for patients with severe CC atrophy, and 33 years for those without atrophy. Mean duration of the disease was 14 years in patients with severe atrophy, and 5 years in patients without atrophy. Severity of clinical symptoms is more pronounced in patients with severe CC atrophy. Numerous or large white matter high signal areas are observed in patients with severe CC atrophy on T2-weighted images. CC atrophy appears earlier than brain atrophy in the course of MS.

Adolescent↗
PubMed1987

Anatomy and computed tomography of the normal lumbosacral plexus.

The main nerves of the pelvis and lower limbs arise from the lumbar and sacral plexuses. These nerves can be affected by any of a large number of pathologic processes that occur in the paravertebral and pelvic regions. Understanding of the neurological findings related to paravertebral and pelvic pathology needs complete and accurate knowledge of the anatomy of these regions. The axial transverse sections of computed tomography give perfect visualisation of the anatomy of osseous, muscular, and vascular structures of the vertebral and paravertebral area and pelvic walls. Visualisation of the nerves in this regions is much more difficult, because direct demonstration of nervous structures by computed tomography is usually impossible. To be able to identify components of the lumbosacral plexus on axial CT sections the radiologist has to know the location of the nervous structures and the relationships of these structures to vascular, muscular and osseous structures which are easily demonstrated.

Humans↗
PubMed1987

The absent cervical pedicle syndrome. A case report.

A recent case of the absent cervical pedicle syndrome is presented. Incorrect radiological interpretation resulted in inappropriate management. A review of the literature on this congenital abnormality and a complete differential diagnosis are presented.

Adult↗
PubMed1987

CT-anatomic correlations of the normal capsulo-ligamentous bands of the extrinsic joints of the thoracic spine.

Five anatomic specimens were studied in an attempt to visualize by high-resolution computed tomography (HRCT) the ligamentous bands of the costotransverse and costovertebral joints. HRCT-anatomic comparison is presented to relate the CT views to the anatomic structures. The authors demonstrate that axial, sagittal and, to a lesser extent, coronal HRCT views perfectly outline the ligamentous structures, although these are flattened, short, deep and free from calcium deposit. The method may be valuable in disease states such as ankylosing spondylitis.

Humans↗
PubMed1987

[Roentgen diagnosis of traumatic instability of the middle and lower cervical spine (C3-C7)].

The problems are discussed that are encountered in diagnosing instability of the middle and lower cervical spine on the basis of conventional radiographs. Two aspects are considered: 11 elementary radiological signs are presented; the corresponding radiological syndromes, their clinical presentations, and the roentgenographic signs are discussed. Both aspects are illustrated by means of appropriate radiographs.

Cervical Vertebrae↗