We analyzed, in a middle-sized hospital, the problems related to the so-called "difficult discharges", conceived as situations involving an economic, human and organizational burden exceeding patients' and their families' capacities and requiring a specific involvement of territorial services. During a whole year (July 1, 2001-June 30, 2002) the cases found were 591. We demonstrated that the problem concerns mainly elderly patients, almost equally distributed between males and females, a quarter of the sample being represented by patients who had recently undergone surgery and whose discharge difficulties were mostly related to mixed social and sanitary problems. This kind of patients is faced with long-term hospitalization implicating a large number of intra-hospital transfers due to the presence of severe and disabling pathologies, mainly neoplasms and strokes, often associated with other serious diseases, various complications and difficult situations from the health point of view. About half of the patients had the possibility to go back home, while the rest required lodging in territorial structures such as nursing homes and retirement homes. The average time-lapse between the possible discharge indicated by the hospital physician and the actual discharge was 10 days, with global annual 6106 days of "improper" hospitalization. Our conclusion is that the phenomenon of difficult discharges is nowadays a very topical problem and that it should be faced with a new model of continuous and integrated assistance organization.