Bonds Between Circulating Tumoral ADN (ctDNA) and the Development of Peritoneal Carcinomatosis for Patients Under PIPAC

Exclusion Criteria

• •A histological diagnosis of the primary tumor or peritoneal carcinomatosis is essential.
• •Patient with an indication for PIPAC for any reason (whether as part of a clinical research protocol or not). Patients with prior treatment with PIPAC are eligible.
• •Patients with abdominal metastases or a single metastasis regardless of location (oligometastasis).
• •For patients of childbearing age need for an effective method of contraception
• •Informing patients and obtaining informed consent, dated and signed.
• •Patient affiliated with a social security scheme
• •Age \< 18 years old
• •WHO \> 3
• •Patient who may benefit from cytoreduction surgery
• •Patient with a contraindication to PIPAC
• •Extra peritoneal disease with the exception of oligometastatic disease
• •Persons deprived of liberty or under guardianship (including curatorship)
• •Impossibility to undergo the medical follow-up of the trial for social, geographical or psychological reasons.
• •For patients of childbearing age without an effective method of contraception
• •Woman who is pregnant, likely to be pregnant, or breastfeeding