S1316, Surgery or Non-Surgical Management in Treating Patients With Intra-Abdominal Cancer and Bowel Obstruction

* Patient must have malignant bowel obstruction (MBO) as evidenced by all of the following: * Clinical evidence of a bowel obstruction (via history, physical, and radiographic examination) * Bowel obstruction below (distal to) ligament of Treitz * Intra-abdominal primary cancer with incurable disease * Patients must have malignant bowel obstruction due to an intra-abdominal primary cancer (i.e. stomach, small bowel \[including duodenum\], pancreas, colon, rectum, appendiceal, ovarian, uterine, cervical, kidney, bladder, prostate, gastrointestinal stromal tumor \[GIST\] \[all sites\], and sarcoma) * Patient must be able to tolerate a major surgical procedure based on clinical evaluation, status of their cancer, and any other underlying medical problems * A member of the patient's surgical team must indicate equipoise for the benefit of the surgical treatment for MBO; the surgeon must respond "Yes" to each of the following questions and sign the S1316 Surgical Equipoise Documentation form for the patient to be eligible: * Is surgery for treatment of malignant bowel obstruction (MBO) being considered for this patient? * Do you have equipoise (If the treating team finds that an operation is required \[e.g., for acute abdomen\], or they would not offer the patient an operation \[e.g., patient is too weak to tolerate surgery\], then there is no equipoise)? * Patients must not have signs of bowel perforation or "acute" abdomen as evidenced by free air on radiologic imagi…