Shanghai Climate & Temperature. Shanghai, China is at 3113'N, 12127'E, 6 m (20 ft). See map. Shanghai has a humid subtropical climate that is mild with no dry season, constantly moist (year-round rainfall). Summers are hot and muggy with thunderstorms. Winters are mild with precipitation from mid-latitude cyclones.
Mesenteric Lymphadenitis Treatment. Mesenteric lymphadenitis often gets better without treatment. Still, you may need medicine to reduce a fever or control pain. Rest, fluids, and warm heat applied to the abdomen may also help relieve symptoms. You may need treatment for the cause of the inflammation.
Superior Mesenteric Artery (SMA) Syndrome. Superior mesenteric artery syndrome is a rare digestive system disorder. The superior mesenteric artery provides blood to the small intestine, cecum, and colon. It crosses over the first part of the small intestine, called the duodenum. Symptoms occur when the artery obstructs the duodenum.