Delaware Attorney General Beau Biden, son of Vice President Joe Biden, has a mass on his brain, according to NBC News.
NBC reports Biden spent the night at a the M.D. Anderson Cancer Center in Houston, Texas for tests to rule out cancer.
A Delaware Department of Justice spokesman told the AP Biden's health issues began on August 14, when he began feeling weak and disoriented. Biden has had health problems in the past, suffering a mild stroke in 2010
NBC10 News has more on Biden's current condition:
NBC10 News medical correspondent Nancy Snyderman said that sources familiar with Biden's condition said that a biopsy would be conducted and that it could take days for the pathology to be studied under a microscope.
A mass isn't necessarily cancerous and can be anything ranging from an aneurysm to a hemorrhage to something else.
According to the AP, the vice president and other members of Biden's family have joined him in Texas.
Click here for more from NBC10 News.