Robert Vierkant

BACKGROUND: Irritable bowel syndrome (IBS) is a common disorder with complex pathophysiological mechanisms. Prior studies suggest that 25-50% of patients with diarrhea-predominant IBS (IBS-D) have evidence of bile acid (BA) diarrhea (BAD)…

BACKGROUND. Our understanding of constipation, a common symptom in persons with Parkinson’s disease (PwPD), is based on small cohorts. The relationship between constipation and other non-motor and motor symptoms of PD at the outset and over time is unclear…

BACKGROUND: Obesity is considered a major risk factor for developing multiple complications and medical conditions including type-2 diabetes mellitus (T2DM). Multiple scores (i.e., Individualized Metabolic Surgery [IMS], DiaRem, advanced DiaRem, and Robert et Al…

FAMILIAL ADENOMATOUS POLYPOSIS (FAP) PATIENTS ARE AT INCREASED RISK FOR EXTRACOLONIC MALIGNANCIES INCLUDING DUODENAL AND THYROID FOR WHICH SURVEILLANCE IS RECOMMENDED…

Low-grade appendiceal mucinous neoplasms (LAMNs) are epithelial appendiceal neoplasms without infiltrative-type invasion and have potential to progress into pseudomyxoma peritonei (PMP). The benefit of surveillance and risk of recurrence in LAMN is not well established…