[Pseudo-neoplastic sigmoid diverticulitis from radiology to diagnosis (author's transl)].

Pseudo-neoplastic sigmoid diverticulitis, a rare clinical form of pseudo-tumoural sigmoiditis, is characterised by the difficulty of its clinical, radiological, endoscopic and even per-operative diagnosis. None of these various phases in study may suffice to eliminate the possibility of an associated carcinoma. The diagnosis may be made by opening the operative specimen, but this is too late in time. The appearance of the bladder, rather than misleading the diagnosis, may provide arguments in favour of the benign nature of these pseudo-tumours.