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The results of 64 MR examinations in 52 patients with benign, malignant and inflammatory lesions of the adnexa are presented. In each case, surgery or laparoscopy was carried out, so that it was possible to compare the findings on MRT with the histological results. Multiplanar images of gynaecological lesions provide excellent demonstration of the pathological anatomy. High soft tissue contrast makes it possible to differentiate tissues, particularly in the case of serous, mucinous and haemorrhagic fluid collections, as well as solid and fat-containing tissue. High sensitivity may be expected in the demonstration of dermoid and endometrial cysts. The distinction between benign and malignant lesions must, however, be based on morphological criteria. The combination of T1 and T2 sequences is necessary for adequate MR examinations of gynaecological lesions.