Primary objective:Identify the criteria correlated to the presence of sarcopenia (defined by the measurement of the IMS by the CT-X method in L3) among the impedancemetry and the HAS malnutrition criteria
Main judgment criteria : Comparison between the groups of patients with sarcopenia (Morphometric measurement of the musculoskeletal surface index \<39cm²/m² in L3 cross section) and without sarcopenia of the different evaluation criteria:
* Impedancemetry values:: muscle mass index in kg/m2 (IMS), fat-free mass in kg/m2 and metabolic activity index (phase angle)
* Percentage of weight loss
* BMI \< 18.5 kg/m2
* Quantified reduction in muscle mass and/or function for patients \< 70 years old
* Quantified reduction in muscle mass and function for patients \> 70 years old
* Physical tests: walking speed and "hand grip" dynamometer secondary objectives:- Proposal of a composite score for the detection of sarcopenia usable in clinical routine
* Evaluation of nutritional intake
* Evaluation of the severity of undernutrition
* Verification of a correlation between the sarcopenia indices of ovarian and endometrial cancer
* Evaluate tolerance profiles to systemic treatments with regard to sarcopenia figures
* Assess the relationship between PFS, OS and sarcopenia index in cancer diagnosis secondary judgment criteria :
* Statistical analysis of sarcopenia and undernutrition data
* Quantification of ingestates (SEFI scale) +/- intake of oral nutritional supplement
* Serological tests: NFS, CRP and Albuminemia
* Comparison of sarcopenia index figures between ovarian and endometrial cancer
* Collection of the grades of toxicities and adverse events to systemic treatments in parallel with the measurement of sarcopenia.
* Correlation between progression-free survival, death and sarcopenia index at cancer diagnosis
