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Related to Castell sign: Psoas sign, Obturator sign
[Donald O. Castell, contemporary U.S. gastroenterologist]
A physical finding indicative of an enlarged spleen. Splenomegaly is suggested by dullness to percussion in the left anterior axillary line (at the level of the eighth or ninth rib) of a supine patient at full inspiration. The dullness disappears on expiration.