PubMed Health⌕ Search

Biomedical subjects

M Lüning

Publications and source records attributed to M Lüning.

At least 91 records · Page 5Linked to original sources
PubMed1979

[Studies on the diagnostic accuracy of lymphography (author's transl)].

Contradictory reports in the literature on the reliability of lymphography stimulated the authors to test the diagnostic accuracy, employing methods which are approximately analogous to practice, using carcinoma of the cervix as the model on which the study was carried out. Using 21 observers it was found that there was no correlation between their experience and on-target accuracy of the diagnosis. Good observers obtained an accuracy of 85% with good proportions between sensitivity in the recognition of detail, specificity and readiness to arrive at a decision on the basis of discriminatory ability. With the help of the concept of the ROC curves, the position taken up by the observers in respect of diagnostic decisions, and a complex manner of assessing the various characteristic factors determining diagnostic accuracy, are demonstrated. This form of test, which permits manipulation of different variants of diagnosis, is recommended, among other things, for performance control at the end of training and continuing education courses in other fields of x-ray diagnosis as well.

Female↗
PubMed1979

[Suggestibility as a factor in diagnostic decision-making, illustrated by lymphographic diagnosis (author's transl)].

Sixteen diagnosticians were repeatedly shown a series of lymphograms. On repeated viewing, the participants were informed of their diagnostic decisions at the first reading (accuracy, sensitivity, specificity). The results show that it was possible to influence the participants in their judgement and attitude. Changes in individual attitudes are demonstrated diagnostically and the individual diagnostic parameters were subjected to a quantitative analysis. The accuracy of the results are related to the method and to the diagnostician with reference to the composition of the clinical material.

Decision Making↗
PubMed1979

[Lymphography in malignant vulvar and vaginal tumors. 1. Clinical significance].

The results of a retrograde analysis of lymphographic processes in 111 patients with malign vulvar and vaginal tumours are substantiating statements concerning the importance of lymphography in diagnosing metastastic processes in lymph-nodes of the inguinal and retroperitoneal region. -- Metastases could be proved lymphographically in 24 (34%) out of 70 carcinomas of the vulva and 8 (22%) out of 37 carcinomas of the vagina. In 24% of all patients with carcinomas of the vulva there were lymph-nodes involved, in two of these cases without a simultaneous involvement of the inguinal region. With carcinomas of the vagina a lumbar involvement was found in 50% of the cases. The accuracy of lymphographic diagnosis was 79% regarding the inguinal region and 89% in the iliac region. Despite of the lower accuracy with regard to inguinal lymph-nodes lymphography exceeds findings obtained by clinical palpation in this respect. As a result of the study, the use of lymphography in case of vulvar and vaginal carcinomas of all clinical stages is considered to be profitable for diagnosing and therapy planning.

Aged↗
PubMed1979

[Accuracy of lymphography in carcinoma of the cervix (author's transl)].

A review has been made of lymphographic diagnoses recorded from patients with cervical carcinoma over more than five years. The diagnosis by lymphography of nodes metastases had to be altered in some 25 per cent, and correction proved necessary also in cases in which lymphography had failed to yield conclusive information. - In the group with lymphographically secured cancer lymph nodes coincided with histological results in 70 per cent of all primary and 90 per cent of secondary checks. Comparable gaps were recorded also from the group with lymphographically inconclusive information on lymph node cancer. - The following conclusions are drawn from the study described: (a) The accuracy of lymphographic diagnosis depends on the experiences of the examiner and changes within time and this must be considered in the evaluation of therapeutic success or failure. - (b) Conclusive findings in the context of lymph node problems are obtainable from selective use of lymphography.

Carcinoma, Squamous Cell↗