I have autoimmune gastritis and a small gastric net. is it normal to have one stool be 2 different colors? is it normal to have one bowel movement be two different colors and runny and pebble-like?

A NET (Neuroendocrine tumor) merits an evaluation by a NET specialist. The evaluation includes special imaging, including a CT Scan of the chest, MRI of abdomen and pelvis, a Gallium 68 PET/CT (or Copper 64 PET/CT) a careful history and physical exam, and blood tests including NET biomarkers including Pancreastatin level, Serotonin (or plasma 5 HIAA level), and an Echocardiogram.