| Boas' sign | |
|---|---|
| Differential diagnosis | Acute cholecystitis, Stomach disease |
Boas' orBoas's sign ishyperaesthesia (increased or altered sensitivity) below the rightHypochondrium or 12th rib region, which can be a symptom inacutecholecystitis (inflammation of thegallbladder).[1] It is one of many signs a medical provider may look for during anabdominal examination.[2]
Originally this sign referred to point tenderness in the region to the right of the 10th to 12th thoracic vertebrae.[3] It is less than 7% sensitive.[4][5]
Its namesake isIsmar Isidor Boas (1858–1938), a German physician and the first licensed GI specialist in his country.[6]
Boas' sign can also indicate stomach and duodenal disease. When the transverse processes of thoracic vertebrae T10-T12 are pressed oreffleuraged with the bottom of the hand, pain can appear at the left ofspinous processes (instomach'slesser curvatureulcer) or at the right (inpyloric orduodenal ulcer).[7]
 | Thismedical sign article is astub. You can help Wikipedia byadding missing information. |