[Pyoderma gangrenosum and biclonal gammapathy probably due to multiple myeloma (author's transl)].

The authors report the observation of pyoderma gangrenosum (P. G.) leading to the discovery of an underlying biclonal gammapathy, which despite the absence of bony lesions, almost certainly represents a malignant myeloma.

[Pyoderma gangrenosum, ovarian carcinoma treated with Melphalan and acute myelomonocytic leukaemia: report of one case and literature review (author's transl)].

A 67-year-old woman suffered from an ovarian carcinoma with lymph nodes metastasis. During 3 years, she was treated with alkylating agents (Melphalan). At the end of therapy, no recurrence was observed.

[Neonatal hyponatremia from maternal origin. Three cases (author's transl)].

The effect of the treatment was controlled by measurements of plasma renin activity and aldosterone concentration. These observations concern maternal toxemia treated by diuretic and dietary sodium restriction two weeks before delivery. In two cases, labor was augmented with oxytocin infusion.