[The malignant fibrous histiocytoma of bone (author's transl)].

The primary malignant fibrous histiocytoma of bone (Stout) is a rare and autonomous sarcoma of the bone which has to be separated from the osseous sarcoma and the osseous fibrosarcoma. The malignant histiocytoma is morphologically characterized by the storiform pattern of interlacing spindle cell bundles and functionally by the phagocytosis of lipids, glycogen, hemosiderin and hematoidin. Contrary to the osteosarcomas, the main age of osseous histiocytomas are the fifth and sixth decade.

Sternocostoclavicular hyperostosis: painful swelling of the sternum, clavicles, and upper ribs. Report of two new cases.

Five patients had persistent, pulling pain in the sternum, clavicles, and upper ribs that was exacerbated by cold and dampness. Clublike, symmetrical enlargement of the clavicles was seen and, in two patients, venous congestion of the upper half of the body. All patients had a constantly elevated erythrocyte sedimentation rate.

[Sarcoidosis of the skeleton. Review of the literature and case report. (author's transl)].

The frequency of sarcoidosis in the skeleton varies between 3 and 36%. Skeletal sarcoidosis is rare in early stages (Löfgren-syndrom), relatively frequent in late stages. The initial phase is characterized by the formation of miliary non-caseating epitheloid-cell granulomas in the bone marrow.

[Pathology of renal tuberculosis (author's transl)].

Introduction of specific chemotherapy and vaccination leads to a remarkable recession of renal tuberculosis in the younger age group. Renal tuberculosis is the result of a haematogenous spread of tubercle bacillus. Haematogenous spreading occurs immediately after primary infection, or, in elderly patients, in combination with recurrency of tuberculous foci in lungs and hilar-lymphnodes.

Primary malignancy, secondary malignancy and semimalignancy of bone tumors.

1. Bone tumors in contrast to tumors in soft tissue, show a wide variety of clinical behavior qualified by the expressions semimalignancy, low grade of malignancy, sarcomatous degeneration and primarily benign bone tumors and bone lesions. 2.

[Semimalignant bone tumors (author's transl)].

Semimalignant bone tumors are characterized by local destructive and invasive growth and the tendency to recur. Haematogenous metastases are exceptional or a late manifestaion. Typical examples of semimalignancy are giant-cell tumors, large chondromas of the pelvis, and recurrent chondromas in any location.

[Sterno-costo-clavicular hyperostosis (author's transl)].

A case is described in which bilateral subclavian vein occlusion was caused by fusiform expansion of the clavicle with hyperostosis, ankylosis of the sterno-clavicular joint, widening and thickening of the sternum and ossification of the costal cartilage of the first ribs. Histologically this proved to be due to an hyperostotic spongiosclerosis.

[Sterno-costo-clavicular hyperostosis: a hitherto undescribed entity (author's transl)].

Persistent pulling pain in the sternum, clavicles and both first ribs, especially during cold and wet weather, necessitated medical investigations and treatment in 3 patients. Externally a cylindrical or spindle-shaped swelling of the clavicles was noticeable and two patients had signs of superior caval obstruction in addition. X-rays showed hyperostosis of the sternal and middle part of the clavicle, synostosis of the sternoclavicular joints with involvement of the two first ribs as well as a thickening and increase in breadth of the sternum.