Efficacy of the echOpen Device to Detect Pyelocaliceal Dilation and Hepatic Steatosis

Inclusion Criteria: * Adult patient (age ≥ 18 years old) * Patient having signed the informed consent to participate in this clinical investigation * Patient affiliated to the social security scheme * Patient arriving in the hospital clinical ward (own initiative or by emergency services) whose clinical symptomatology suggests the presence of pathological elements which would be visible using an ultrasound probe in the following cases: * Search for pyelocaliceal dilation: patient consulting for abdominal and/or lumbar pain and/or iliac fossa, fever, pain in the right or left iliac fossa, anuresis * Search for hepatic steatosis: in a case of global clinical examination, abnormal laboratory test results, known or suspected metabolic disease, any situation suggesting the presence of hepatic steatosis Exclusion Criteria: * Minor patient (age \< 18 years) * Patients under the State Medical Assistance (AME) * Obese patient (body mass index \> 29.9) * Patient in too serious condition for the clinical examination to be done fully and/or with additional exploratory time * Unstable patient: need for immediate care, impossibility to carry out a thorough clinical examination including interview, palpation, auscultation, percussion * Known allergy to ultrasound gel