Reactive angioendotheliomatosis secondary to dermal amyloid angiopathy.

Reactive angioendotheliomatosis (RAE) is a rare benign cutaneous vascular proliferation characterized by intravascular hyperplasia of endothelial cells and tuft-like proliferation of vessels. A 75-year-old man had erythematous and violaceous macules, some stellate and others arranged in a livedoid pattern, evolving toward necrosis with central areas having an "atrophie blanche" appearance spread on the trunk, inguinal folds, and right thigh. He was on hemodialysis and had a benign monoclonal gammopathy.

Substitution of acetic acid for hydrochloric acid in the bicarbonate buffered dialysate.

In a multicenter study including 5 dialysis units, blood acetate changes during 4 h dialysis sessions in 141 patients treated with a 4 mM acetate-containing bicarbonate dialysate (ABD) were evaluated and compared to the values of 114 patients using an acetate-free bicarbonate dialysate (AFD). Acetate-free bicarbonate dialysate was delivered by a dialysis machine from the mixing with water for dialysis of a 1/26.2 bicarbonate concentrate, and a 1/35 acid-concentrate in which acetic acid was substituted for hydrochloric acid (Soludia, Fourquevaux, France).

Kinetics of technetium-labeled heparin in hemodialyzed patients.

Technetium-labeled heparin kinetics studies were undertaken in 12 hemodialyzed patients, where heparin was used over a long term (1 to 10 years) for anticoagulation of the extracorporeal circuit. The 99mTc-heparin (99mTc VECTOSCINT, Solabco Nuclear, Coutras, France) used has a 10 mCi activity and a labeling efficiency of more than 95%. Two healthy subjects served as control.