[ role of imaging in lower gastero-intestinal bleeding]

Lower gastrointestinal bleeding means bleeding from sites distal to the ligament of Treitz. The management of haemorrhage involves two folds: first an evaluation of the hemodynamic status and resuscitation when necessary and as soon as possible aetiological investigation. Advances in endoscopic, radiological and surgical equipment and techniques offer an efficient multidisciplinary approach. Colonoscopy usually allows aetiology diagnostic and in some cases haemostasis. Imaging is useful in major haemorrhage, and sometimes enables endovascular treatment. Surgical treatment depends on aetiology, in some cases emergent surgery is the only possible way to obtain haemostasis

[Ewing's sarcoma in old patients-a case report]

Ewing's sarcoma is a primitive bone tumor rarely observed in old patients. The main sign is osseous pain. The authors report a case of localized Ewing's sarcoma at left femur in a 42-years-old patient, revealed by an hydarthrosis of the knee, that was the only sign of appeal. Diagnosis was suspected on the radiological aspect and was confirmed by a surgical biopsy