Physicochemical and bacteriological analysis of the contents of occluded biliary endoprostheses
Christian Moesch, Denis Sautereau, Franclois Cessot, Pascal Berry, Marcelle Mounier, Alain Gainant, Bernard Pillegand – 1 December 1991 – The deposits obstructing 12 biliary endoprostheses were examined by scanning electron microscopy and analyzed quantitatively by Fourier transform infrared spectroscopy. Calcium palmitate and bilirubinate associated with proteins were found in all the deposits. Apart from the small amount of cholesterol, this composition closely resembled that of brown pigment gallstones and suggested an infectious cause.