Mayor of Pittsburgh in Cardiac Care Unit

Mayor Richard Caliguiri, who disclosed in October that he is suffering from the rare and incurable disease amyloidosis, was hospitalized Wednesday complaining of lightheadedness, a spokesman at Shadyside Hospital said.

Caliguiri, 56, was listed in stable condition in the cardiac care unit.

It was not clear if his symptoms were related to amyloidosis, a potentially fatal disease that damages the body’s organs. Caliguiri said previously that the disease had affected a “small portion” of his heart.