Transient Elastography DEdicated to Cosmetology And Dermatology (TEDECAD)

Inclusion Criteria: * Patients group * More than 18 years old * Inform consent form signed * Affiliated to medical insurance * No allergy to local anaesthetic drugs known * For patients with lymphedema of upper limb: unilateral lymphedema occurred after a surgery and/or radiotherapy clinically confirmed by a dermatologist or a physician trained to lymphology, or primitive lymphoedema clinically confirmed by a dermatologist or a physician trained to lymphology, whom the unilateral characteristic will be proved by a recent lymphoscintigraphy (less than 2 years) * For patients with lymphedema of lower limb: unilateral lymphedema occurred after a surgery and/or radiotherapy clinically confirmed by a dermatologist or a physician trained to lymphology, or primitive lymphoedema clinically confirmed by a dermatologist, whom the unilateral characteristic will be proved by a recent lymphoscintigraphy (less than 2 years) * For patients with venous insufficiency without leg ulcer: venous insufficiency without ulcer, clinically diagnosed by a dermatologist or a physician trained to angiology * For patients with venous insufficiency with ulcer: venous insufficiency with ulcer, clinically diagnosed by a dermatologist or a physician trained to angiology * Healthy group * Healthy volunteer * More than 18 years-old * Without any cutaneous pathology on the studied areas * No venous insufficiency ; this will be confirmed by a physician trained to stages of venous insufficiency and will be defined by absence of: edema, varicosities, dilated veins, telangiectasia, venous dermatitis, sclerosis, leg ulcer * Inform consent form signed * Affiliated to medical insurance * No allergy to local anaesthetic drugs known * Matched according to age (± 10 years), gender and weight (± 20 kg) to patients with venous insufficiency Exclusion Criteria: * Patients group * History of aesthetic surgery on studied areas * Cutaneous abnormalities (including scars) on studied areas, except for signs of lymphedema or venous insufficiency * Acute or offset chronic pathology which doesn't allow long-timed explorations (according to investigator's assessment) * Inability to understand information and to sign the consent form (linguistics reasons or neuro-psychological) * Pregnant women, lactating women, and women in age for procreation and without reliable contraception or without history of hysterectomy * Person under guardianship * Healthy group * Haemophilia or equivalent pathology * Cutaneous abnormalities on studied areas (including scars) * History of aesthetic surgery on studied areas * Acute or offset chronic pathology which doesn't allow long-timed explorations (according to investigator's assessment) * Inability to understand information and to sign the consent form (linguistics reasons or neuro-psychological) * Pregnant women, lactating women, and women in age for procreation and without reliable contraception or without antecedent of hysterectomy * Person under guardianship