[Reoperation on valve bioprostheses. Apropos of 64 cases].

Sixty-four patients with one or more bioprostheses were reoperated between 1970 and 1982. Reoperation was performed for degenerative lesions in cases (48%), for aseptic periprosthetic leaks in 18 cases (28%), for infectious lesions in 13 cases (21%) and for thrombosis in 2 cases (3%). Degenerative and infectious lesions were commoner in aortic bioprostheses whilst periprosthetic leaks were commoner in mitral bioprostheses.

[Surgical treatment of pulmonary metastases. Apropos of 26 cases].

Twenty-six patients with known primary tumors were treated surgically for pulmonary metastases between 1951 and 1979. The metastases were diagnosed more often (58% of cases) by routine radiological examinations than because of thoracic symptoms. While diagnosis of the primary tumor and the metastases was simultaneous in three cases, the average lapse of time between the two diagnoses was 5 years and 1 month in the other cases.