[Mucinous carcinoma of the prostate: critical review of Elbadawi's criteria]. 
We present our experience on prostatic mucinous adenocarcinoma and at once we practice an actualization and a critical review of Elbadawi's criteria.  After reviewing 206 prostatic carcinomas diagnosed in our hospital, we describe one case that fulfill criteria for being considered a prostatic mucinous adenocarcinoma.  We also carry out a wide literature review trying to define anew the including criteria of this tumour by the light of modern knowledge and technology.  We think that for accepting a tumour as a prostatic mucinous adenocarcinoma, this have to fulfill the following criteria: 1. " More than 25% of a significative tumoral sample is mucinous pattern and present, single or clustered, tumour cells floating in immunohistochemically probed, acidic and neutral, mucin lakes".  2. " Tumour is Gleason 3-4 cribiform pattern with direct transition to colloid areas and usually coexist with classic adenocarcinoma but papillary growth patterns should be excluded.  Tumour may contain a moderate proportion of signet-ring cells".  3. " Immunohistochemical staining for PSA have to be strongly positive in both, cribiform and mucinous, areas".  4. " Those PSA nonreactive, or only focally positive, mucinous adenocarcinomas, could be labeled as prostatic only when local or distant mucinous carcinomas are ruled out".