Tripe palms

Tripe palms, also known as acanthosis palmaris, is a medical sign characterized by thick ridged velvety palms, typically as part of a paraneoplastic syndrome. It resembles the lining of the stomach of some animals (tripe). Other signs that may be noted at the same time include most frequently acanthosis nigricans (AN), and less commonly finger clubbing and Leser-Trélat sign.

The sign is rare.