usually segmental underdevelopment of the ureter causing stenosis and hydronephrosis. ureteral obstruction. may be caused by intraluminal lesions, e.g. urolithiasis, or as part of pyelonephritis or by external compression of the ureter or as a congenital defect. Sudden blockage causes acute abdominal pain that lasts for several hours.
Chuseok (ì¶ì; ç§å¤; [tÉÊ°u.sÊkÌ]), originally known as hangawi (íê°ì; [han.É¡a.É¥i]; from archaic Korean for the great middle (of autumn)), is a major harvest festival and a three-day holiday in Korea celebrated on the 15th day of the 8th month of the lunar calendar on the full moon.
Autumn (September to November*) is probably the best time of year in Korea. The weather is cooler and dryer, but still pleasantly warm and sunny. As the season progresses, the leaves change colors and harvesting begins. Fall is the time of Chuseok, Korean Thanksgiving.