Please select the eligibility criteria that correspond to the clinical trial below.
Title: Polyp Detection With The Peerscope System™: A Randomized Tandem Colonoscopy Study
Brief Summary: The PeerScope System consists of Peer Medical camera heads, endoscopes, video system, light source and other ancillary equipment. The system is intended for endoscopic diagnosis, treatment and video observation of the digestive tract. The PeerScope system model B is indicated for use for endoscopy and endoscopic treatment within the lower digestive tract (including the anus, rectum, sigmoid colon, colon and ileocecal valve) of adults patients.

Objective:To compare the additional diagnostic yield obtained by using the PeerScope System™ extended view vs. the diagnostic yield obtained by the Standard view colonoscopy.

In addition, time measurements including time to cecum, time for withdrawal and overall procedure time will be analyzed and reported for each group.


Options:
A: Inclusion Criteria:

* Subject between the ages of 18 and 70
* The patient is undergoing colonoscopy for screening, for surveillance in follow-up of previous polypectomy or for diagnostic workup;
* Written informed consent must be available before enrollment in the trial
* For women with childbearing potential, adequate contraception

Exclusion Criteria:

* Patients with a history of colonic resection;
* Patients with known (or newly diagnosed) inflammatory bowel disease;
* Patients with a personal history of polyposis syndrome;
* Patients with suspected chronic stricture potentially precluding complete colonoscopy;
* Patients with diverticulitis or toxic megacolon;
* Patients with a history of radiation therapy to abdomen or pelvis;
* Patients with acute lower GI bleeding
* Patients who are currently enrolled in another clinical investigation in which the intervention might compromise the safety of the patient's participation in this study.
B: Inclusion Criteria:

* Patients referred ot colonoscopy, age between 50 - 70 years

Exclusion Criteria:

* Patients with colorectal cancer, previous colonic surgery, active colitis and musculoskeletal problems Patients may also be excluded after the first insertion, if painful, routine care will proceed
C: Inclusion Criteria:

* The patient is undergoing colonoscopy for screening, for surveillance in follow-up of previous polypectomy or for diagnostic workup;
* The patient must understand and provide written consent for the procedure.

Exclusion Criteria:

* Patients with a history of colonic resection;
* Patients with inflammatory bowel disease;
* Patients with a personal history of polyposis syndrome;
* Patients with suspected chronic stricture potentially precluding complete colonoscopy;
* Patients with diverticulitis or toxic megacolon;
* Patients with a history of radiation therapy to abdomen or pelvis;
* Patients who are currently enrolled in another clinical investigation in which the intervention might compromise the safety of the patient's participation in this study.
D: Inclusion Criteria:

* At least 3 months of symptoms of pain or burning centered in the upper abdomen prior to enrollment.
* Both Helicobacter pylori positive and negative patients eligible (Helicobacter pylori is a bacterial infection of the stomach)

Exclusion Criteria:

* Presence of clinical significant abnormal findings at the endoscopy (examination of esophagus and stomach) prior to enrollment.
* Patients with symptoms of other gastrointestinal diseases, such as Gastroesophageal Reflux Disease (GERD), Irritable Bowel Syndrome (IBS) or Inflammatory Bowel Disease (IBD).
* Helicobacter pylori eradication treatment during the last 12 months prior to enrollment.

Answer: A