Gastroenterologist is also a sub-specialty of internal medicine .a gastroenterologist deals with digestive system problems. They diagnose and treat disorders of the gastrointestinal tract.
• ERCP (endoscopic retrograde cholangiopancreatography) — a procedure to detect disorders in the ducts such as narrowing, gallstones, blockages, tumors and cysts. An ERCP combines the use of X-rays and endoscope — a long, flexible, lighted tube. The endoscope is advanced through the mouth and into the small bowel to view the common opening to the ducts from the liver and pancreas. A contrast material is injected into the ducts so they can be seen on X-rays. Additional instruments are used to remove stones and or other blockages. Stents may be used to drain an area and open a narrowed area.
• Sphincterotomy — abnormalities found during an ERCP study can sometimes be treated at the same time with an endoscopic retrograde sphincterotomy (ERS), a procedure to cut the sphincter muscle between the common bile duct and the pancreatic duct. Instruments are inserted through the endoscope to cut or stretch the sphincter.
• EUS (endoscopic ultrasound) — an ultrasound of the pancreas, transgastric or transduodenal, which helps define the size and relationship of masses to major structures and allows biopsy under radiologic guidance.
Endocrinologist is also a sub-specialty of internal medicine. This doctors treats people endocrine or glands problems. Glands are organs that produce and secretes hormones necessary to control and regulate bodily functions. Patients with thyroid problems are treated by endocrinologist.
An endocrinologist uses diagnostic tests for several reasons, including: • To measure the levels of various hormones in a patient's body • To learn if the endocrine glands are working correctly • To determine the cause of an endocrinological problem • To confirm an earlier diagnosis
• 24-Hour Urine Collection Test
• ACTH Stimulation Test
• Bone Density Test
• CRH Stimulation Test