Fritz Schajowicz

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Chondromyxoid fibroma is the least common benign tumour of cartilage derivation. In 1948 it was described by Jaffe and Lichtenstein as a distinctive entity; formerly it was classified as myxoma (Bloodgood 1924) or a myxomatous variant ofgiant-cell tumour, or mistaken for a malignant lesion, especially chondrosarcoma, chondromyxosarcoma or myxosarcoma. The(More)
The clinical, radiographic and pathological features of eighty-eight cases of histologically verified intra-osseous ganglia in eighty-three patients are described. All were located in the subchondral bone adjacent to a joint and most frequently involved the hip, the ankle (medial malleolus), the knee and the carpal bones. Forty-seven of the eighty-three(More)
The clinical and radiological features in three cases of cystic angiomatosis of bone are reported. Although these features are generally diagnostic except from histiocytosis X, the definitive diagnosis must be established by a pathological study, preferably of a segment of an involved rib or fibula. The prognosis varies according to the type of clinical(More)
Out of 21 900 cases filed at the Latin-American Registry of Bone Pathology between April 1940 and July 1981, there were 987 with Paget's disease (4.51 per cent); 62 of these (6.28 per cent) were complicated by sarcoma and two were associated with giant-cell tumours of bone (osteoclastoma) without signs of malignancy. There was a slight predominance of men(More)
Epiphysial chondroblastoma is the name proposed by one of us (1947) for the relatively rare tumour designated by Jaffe and Lichtenstein in 1942 as “benign chondroblastoma of bone” and formerly identified as a “giant-cell tumour” variant (Kolodny 1927, Ewing 1928, Codman 1931). Johnson (1963) actually still classifies this lesion as “enchondromatous(More)
Most soft-tissue masses and tumors of various etiologies and histologies have high signal intensity on T2-weighted pulse sequences (long T2). Of 47 soft-tissue masses, seven had a low signal (short T2) on T2-weighted pulse sequences. All seven masses were tumors, and histologic review showed that their composition differed from that of the other 40 lesions(More)
The clinicoradiologic and pathologic aspects of three cases of chondromyxoid fibroma of small size and predominant cortical location are reported. Because of these unusual features, the possibility of chondromyxoid fibroma was not considered on the basis of the radiographic pattern. The diagnosis was made after pathologic examination of the tissue, obtained(More)
Malignant bone-forming tumors that arise from the surfaces of long bones are far less common than those that arise from within bone. These surface osteosarcomas are clinically and radiographically similar, yet histologically they are quite distinct. In reviewing the literature, we classified the tumors according to three subgroups: parosteal (juxtacortical)(More)
Despite the efforts of many workers to increase our understanding of osteoarthritis, effective measures have been devised only for the treatment of the advanced stage of the disease ; such treatment usually involves either the total suppression of the affected joint by arthrodesis or the more or less complete removal inherent to arthroplasty. The vogue(More)