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The authors report a very rare case of necrobiosis lipoidica, histopathologically confirmed, which happened in the breast a few months following the insertion of a silicone implant (post-mastectomy reconstruction). This case raises two problems: the physiopathology (role of the silicone implant) and the treatment of this accident, resistant to current therapy.

The authors report a very rare case of lipome extended to the superficial and deep lobes of parotid gland. MRI remains the best complementary examination to direct the diagnosis; however only the surgery will bring a histological proof formal.

Brachionus calyciflorus (Pallas) is a common brachionid in sewage oxidation ponds. The uptake and assimilation of E. coli was optimal at concentrations of 2.7–6.9 × 108 cells ml−1 while assimilation coefficient per body weight of B. calyciflorus was found to be 10% · Ind.−1 d−1. More than two eggs per individual were produced during 24 hours when brachionids were fed with a mixutre of E. coli (109 cells · ml−1) and Chlorella spp. (106 cells · ml−1). The nutritional value of the mixture of E. coli and Chlorella spp. was found to be higher than that of bacteria alone.