Boas' point is an area of tenderness to

palpation Palpation is the process of using one's hands to check the body, especially while perceiving/diagnosing a disease or illness. Usually performed by a health care practitioner, it is the process of feeling an object in or on the body to determine ...

to the left of the 12th thoracic vertebra found in some patients with

gastric ulcer Peptic ulcer disease (PUD) is a break in the inner lining of the stomach, the first part of the small intestine, or sometimes the lower esophagus. An ulcer in the stomach is called a gastric ulcer, while one in the first part of the intestines i ...

. This

medical sign Signs and symptoms are the observed or detectable signs, and experienced symptoms of an illness, injury, or condition. A sign for example may be a higher or lower temperature than normal, raised or lowered blood pressure or an abnormality showin ...

is named after

Ismar Isidor Boas Ismar Isidor Boas (28 March 1858 – 15 March 1938) was a German gastroenterologist born in the town of Exin, then in the Prussian Province of Posen, today in Poland. Boas was born in the family of a small merchant and among several siblings he w ...

References

Diagnostic gastroenterology Medical signs {{med-sign-stub