<qa>  What is the surgical procedure in which an incision is made in the abdomen to look at thePatients 18 years of age and older with peritoneal carcinomatosis may be eligible for this study. Candidates are screened with a medical history, physical examination, and blood tests; chest X-ray and computed tomography CT scans; review of pathology slides; electrocardiogram EKG, bone scan, and brain magnetic resonance imaging MRI, as needed; and laparotomy. Laparatomy is a surgical procedure in which an incision is made in the abdomen to look at the amount and location of tumors in the abdominal cavity. Patients whose surgery reveals that the tumors cannot be removed are taken off study. Those eligible for the study have their tumors removed during this screening laparotomy as part of the study procedure, as follows: 