Inclusion Criteria:  Patients aged between 15 and 25 years; New patients treated at the Curie Institute and hospitalized in the AJA oncology department; Patient undergoing chemotherapy administered intravenously; Solid tumors.  Exclusion Criteria:  Patient undergoing oral chemotherapy; Persons deprived of their liberty or under guardianship (including guardianship); Inability to undergo medical monitoring of the trial for geographical, social or psychological reasons.