Yankton Surgical Associates is located in Yankton, SD, with outreach clinics in Parkston, SD and Lynch, NE. We offer surgical and non-surgical treatment of:* Hernias* Galbladder Disease* Moles & Skin Tumors* Spider Veins* Digestive Disorders* Colon & Rectal Disease* Cancer* Thyroid DisordersDr Kynan Trail is Certified American Board of Surgery, with special interest in varicose vein surgery, upper & lower endoscopy, and laparoscopic surgery. Call us today to schedule your appointment.