Anna Nidecker

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Eight primary leiomyosarcomas of bone were registered in the files of the Basel Bone Tumor Reference Center, Basel, Switzerland, for the period 1972 to 1990. The mean age of the patients (six males and two females) was 43.7 years (range, 11 to 87 years). The tumors were located in the long bones, the fingers, and the clavicle, and presented radiologically(More)
A program of detoxification of heroin addicts by the use of oral methadone produced a series of patients who developed pulmonary granulomatous mass lesions as the result of the intravenous use of the oral form of the drug. Talc, used in the preparation of the tablet, seems to be the offending substance. Besides producing a diffuse interstitial granulomatous(More)
A retrospective study of 68 cases of tumours and tumour-like lesions related to the scapula, included in the registry of the Bone Tumour Reference Centre at the Institute of Pathology/University Clinics, Basle, has been carried out. Each case was evaluated for lesion entity, activity and location, age and sex of the patient, and, in 49 files with available(More)
OBJECTIVE MR arthrograms were retrospectively reviewed for susceptibility artifacts induced by accidental injection of a small amount of gas when paramagnetic contrast solution was injected. A pitfall to interpretation, an unusual distribution of intraarticular gas into the sheath of the long biceps tendon that resembled a rope ladder, was observed and(More)
The radiological findings of adamantinomas of long bones are described in 22 patients. The diagnosis was confirmed by a team of experts (pathologist, radiologist, orthopaedic surgeon) of the "Bone tumour study group" at the German Cancer Research Center. There were 12 male and 10 female patients aged 5 to 67 years (most commonly in the second and third(More)
Lesions of the long head of the bicepstendon (BT) are seen in association with tears of the rotator-cuff, particularly lesions of the subscapularis tendon and the rotator-interval. The frequency of positive MR-findings at the BT is approximately 25%. The pathologic alterations include complete medial luxation, subluxation and entrapment by the subscapularis(More)
 Purpose. To assess the MR arthrographic findings of bicipital tenosynovitis in correlation with arthroscopy. Design and patients. The shoulder MR arthrographies of 500 consecutive patients were retrospectively analyzed for signs of bicipital tenosynovitis and associated pathologies. Forty patients (8%) had MR evidence of bicipital tenosynovitis, but only(More)
Pathology of the rotator cuff is the cause of most common problems at the shoulder joint. Acute injuries are not as frequent as chronic cuff disease, but often they aggravate inflammatory or degenerative tendon alterations, even if they are of minor severity. Traumatic rotator cuff tears predominantly affect the supraspinatus tendon or the rotator interval.(More)
A 43-year-old woman was evaluated because of a round tumor at the base of the tongue. Scintigraphy with 131I showed radionuclide uptake over the posterior part of the tongue but no uptake at all at the usual pretracheal location. Magnetic resonance imaging revealed a well defined round mass of high signal intensity, which was clearly delineated from(More)