Shimozuura Naika Iin, located in Higashimachi, Kurume City, Fukuoka Prefecture, is a medical clinic specializing in internal medicine, offering comprehensive care primarily for digestive system disorders. The clinic focuses on diagnosis and treatment using the Bi-Digital O-Ring Test (BDORT), with particular emphasis on early detection of cancer and precancerous lesions. When abnormalities are detected through the O-Ring Test, verification is conducted using gastroscopy, colonoscopy, chest CT, ultrasound, and other examinations. For endoscopic procedures, sedation with premedication is used to minimize discomfort. Upper gastrointestinal endoscopy examines the esophagus, stomach, and duodenum, and also handles tissue biopsies and polyp removal. Lower gastrointestinal endoscopy examines the entire colon with special emphasis on detecting and removing polyps. Chest CT scans for lung cancer and pneumonia are also performed, with images interpreted monthly by a clinical professor from Kyoto University. Medical departments include Internal Medicine, Gastroenterology, Gastrointestinal Medicine, Respiratory Medicine, Neurology, Radiology, Dermatology, and Physical Medicine. The clinic is affiliated with St. Mary's Hospital and has parking facilities. English language support is available. Consultation hours are 8:30 AM to 1:00 PM in the morning and 2:30 PM to 6:00 PM in the afternoon.