Sacral Nerve Stimulation in Treating Low Anterior Resection Syndrome or Fecal Incontinence in Patients With Locally Advanced Rectal Cancer or Other Pelvic Cancer, the RESTORE Study

Inclusion Criteria: * Cohort 1: Patients with pathologically proven diagnosis of primary rectal cancer * Cohort 1: Patients who have previously undergone surgical resection and anastomosis (restorative) with curative intent treatment with or without chemoradiation * Cohort 1: Patients treated with restorative surgical resection without radiation * Cohort 1: Patients with any T-stage or N-stage rectal cancer that underwent treatment with radiation and restorative surgery * Cohort 1: Patients with self-reported FI or LARS * Cohort 1: Patients must be at least 18 years old and be able to speak and understand English * Cohort 1: Patients must be willing to and able to sign an approved informed consent document * Cohort 1: Patients must be \>= 24 months post-resection of rectal cancer * Cohort 1: Patients must have failed prior conservative measures such as Metamucil and motility medications and already been assessed and treated in a pelvic floor rehabilitation program (biofeedback) designed to treat FI and LARS, and continue to experience significant defecatory dysfunction, allowable per principal investigator (PI) discretion * Cohort 1: Patients must be willing and able to complete Patient Reported Outcomes Questionnaires for before device placement, during the testing phase following lead placement, and after implantation of the battery * Cohort 1: Patients must be willing and able to undergo elective ARM testing to objectively measure pelvic floor function * Cohort 1: Patient…