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Biomedical subjects

S Tötterman

Publications and source records attributed to S Tötterman.

15 recordsLinked to original sources
PubMed1990

How many projections are really needed in angiographic assessment of the femoral bifurcation?

The purpose of this study was to analyze how many angiographic projections are needed in the diagnosis of hemodynamically significant stenoses of the femoral bifurcation. A total of 134 femoral bifurcations were examined with triplanar angiography in 67 patients (45 men and 22 women). The patients, ranging in age from 42 to 81 years (mean 63), suffered from incapacitating symptoms of peripheral arterial disease. The contralateral posterior oblique projection proved to be the most valuable in the assessment of hemodynamically significant arterial stenoses of the femoral bifurcation. An AP projection added information on stenoses of the inlets of the deep femoral artery in 9% of cases and on stenoses of the inlets of the superficial femoral artery in 6% of cases. An arteriographic examination should be started with a contralateral posterior oblique projection and this view will suffice in most cases.

Adult↗
PubMed1989

Long term outcome after resection of the first rib for thoracic outlet syndrome.

A total of 112 first ribs in 103 patients were resected over 11 years for thoracic outlet syndrome. Seventy-seven patients (84 operations) were followed up for 2.5 years or more to assess the long term results of this procedure and the factors affecting them. One month after surgery 52 per cent of limbs were asymptomatic and 77 per cent were at least improved. A follow-up examination was performed, on average 6.1 years after the operation, by two independent examiners. This evaluation showed a permanent success rate of 37 per cent among 84 limbs examined. These long term results compare unfavourably with previously published data. The reason for the poor final outcome seemed to be difficulty in selecting patients for the operation. This was not aided by any of the preoperative tests. Patients in this study were evaluated by independent examiners, and only a total absence of preceding symptoms was accepted as the criterion for success. We emphasize the importance of unbiased evaluation and long term follow-up.

Adult↗
PubMed1987

The effects of clinical data on radiological diagnostic performance in middle-face trauma.

To determine the effect of clinical information on the radiological diagnostic performance in middle-face injury, the medical records and radiographs of 618 patients with middle-face injury were reviewed. The information value of clinical data given in each x-ray requisition was evaluated. The radiological diagnoses were compared with the final clinical diagnoses both retrospectively and prospectively (with and without clinical data). Knowledge of clinical data with statistical significance changed the reader's decision threshold towards improved sensitivity but poorer specificity. Clinical data did not improve the radiologists' performance. Clinical data may be helpful in diagnostic tasks rather by increasing the sensitivity than the specificity.

Evaluation Studies as Topic↗
PubMed1985

Intramuscular myxoma--a clinicopathological study of twenty-three cases.

Twenty-three cases of intramuscular myxoma were analyzed clinically and histologically. The mean age of the patients was 54 years, and two-thirds were women. Clinical follow-up of 2 to 17 years' duration revealed no recurrences or metastases. Intramuscular myxoma thus appears to be a completely benign tumor. One patient simultaneously had a myxoma in the muscle of the thigh and a lesion of fibrous dysplasia in the femur. In addition, 14 of 16 patients studied with x-ray had a significantly higher incidence of minor abnormalities in bones as compared with the normal population. The myxomas were characterized histologically by sparse cellularity, abundant intercellular material digestible with hyaluronidase, and lack of mitotic figures. At the ultrastructural level, the tumor cells showed characteristics of fibroblasts and myofibroblasts. Immunohistochemical analysis of intermediate filament proteins revealed vimentin- but no desmin-positivity in the tumor cells, and endothelial cell markers as well as S-100 protein were absent. This is compatible with fibroblastic-myofibroblastic nature of the myxoma cells.

Adult↗
PubMed1985

Arteriomegaly.

The features of a patient with arteriomegaly of thoracic and abdominal aorta, common and external iliac, and femoral arteries are described.

Aged↗
PubMed1985

Long term results of late reconstruction for anterior or anteromedial instability of the knee.

Forty-one patients who had had surgical repair for anterior or anteromedial instability of the knee were examined on average 3.7 years after the operation. Of these patients, 17 had been injured in sports activities, 11 in work accidents, 5 in traffic accidents and 8 during other activities. Twenty-six patients underwent intra-articular reconstruction of the anterior cruciate ligament where the Jones procedure was used, 7 with the HeyGroves procedure, and 2 by the Eriksson procedure. The remaining 6 patients were treated by transfer of the gracilis, semitendinosus tendon or fascia lata. During the operation, the medial collateral ligament was reefed in 4 knees and Mauck's reconstruction was performed on 4 knees. Medial meniscectomy was carried out in 9 patients. The results were evaluated using subjective, functional and objective criteria. The objective criteria included both clinical examination and stress radiography using a specially designed apparatus. Laxity of the medial collateral ligament and anterior drawer sign were recorded on radiographs, using the uninjured knee for comparison. The operation was estimated to have been successful subjectively (excellent or good) in 25 patients, functionally successful in 20 and objectively successful in 23 patients. In the personal opinion of 33 patients the knee improved. Meniscectomy and long follow-up time were found to cause a decrease in successful results. More arthritic changes appeared if meniscectomy had been performed. The patients returned to work within an average period of 3.7 months. In 7 cases the result was classified as functionally poor, and the knee required a subsequent operation.

Accidents↗
PubMed1979

Desmoid tumour: an angiographic study of five cases.

Compared with the frequent reports on the angiographic features of fibrosarcomas only a few similar studies concerning desmoid tumours have been published. Five patients with desmoid tumours and investigated by angiography are reported. The findings were normal in two instances. The forearm tumours of two patients were supplied by unusually large branches of anterior interosseous arteries with normal courses within the tumour. Increased vascularity was seen in these two tumours as well as in a fifth tumour of the buttock. These three tumours behaved more aggressively than the two with entirely normal angiographic appearances. On the basis of the literature and the findings in these five cases there might well exist a positive correlation between the degree of agressiveness of a desmoid tumour and its angiographic features as already established in the case of fibrosarcomas.

Adolescent↗
PubMedDate not supplied

Effect of training and experience on radiologic diagnostic performance in midfacial trauma.

In a retrospective approach the medical records and radiographs of 618 patients with midfacial trauma were reviewed by radiologists who were classified into four groups according to the length of their training and experience. Initially reported diagnoses were compared with discharge diagnoses, and the impact of training and experience on diagnostic performance was assessed. The same parameters were also investigated in a prospective study. Neither of the investigations revealed any statistically significant improvement in diagnostic performance with increased training and experience. After the basic radiologic education, innate perceptive and cognitive abilities seem to have a larger influence on radiologic diagnostic performance than training and experience.

Facial Bones↗