Compassionate Care -- One of Memorial Sloan Kettering's experts in gastrointestinal neuroendocrine tumors is Monica Girotra, an endocrinologist. Carcinoid tumors are the most common type of neuroendocrine tumor. An estimated 11,000 to 12,000 people are diagnosed with a carcinoid tumor each year in the United States. About two-thirds of all carcinoid tumors appear in the gastrointestinal system, particularly in the small intestine, rectum, stomach, colon, and liver.
1 Downhill bikes are a specialized type of mountain bike with a very strong frame, altered geometry, and long travel suspension. 2  They are designed for use only on downhill courses. 3  Freeride bicycles in this category usually have very strong frames and dual-suspension with travel of six inches and up.
Wheel Size. Traditionally mountain bikes come with 26-inch rims. A new trend on the rise is using larger rims, called 29ers. These bikes use a larger 700c rim like that on road or hybrid bicycle. A 700c rim is about 700 mm or 27.5 inches, making the name 29er a bit confusing. The name 29er is actually a reference to the size of the rim including the tire, which is significantly thicker on a mountain bike compared to that of road or hybrid bike.