as in Furstenberg sign – The swelling and pulsation of a mass when the ipselateral jugular vein is compressed. An example is a nasal mass that pulsates or expands in response to compression of the jugular vein. This is due to mass’s connection with the intracranial CSF space that allows changes in intracranial pressure to be reflected in the mass under observation. Similar changes will be seen with coughing or straining that change intracranial pressure.