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K-sign looks for the presence of tenderness on posterior abdominal wall in the retrocaecal and paracolic appendicitis.
K-sign can be useful in diagnosis of retrocaecal and paracolic appendicitis.
The author is reporting a case series of four patients in whom a K-sign, a clinical sign, was elicited and found positive on the posterior abdominal wall for presence of tenderness in a specific area bound by the 12th rib superiorly, spine medially, lateral margin of posterior abdominal wall laterally and iliac crest inferiorly and was found to be present in three retrocaecal and one paracolic appendicitis.