The U.S. Food and Drug Administration says drugmakers have recalled more than a half-million bottles of the blood pressure medication prazosin hydrochloride over concerns it may include a cancer-causing chemical. New Jersey-based Teva Pharmaceuticals USA issued a voluntary recall earlier this month for some lots of the capsules it sells. Doctors prescribe prazosin, which relaxes blood vessels, to help lower blood pressure. It also is sometimes prescribed for post-traumatic stress disorder. The FDA has given the drug a Class II risk classification because some of the recalled medication may have nitrosamine impurities that are considered potentially cancer causing.

A federal judge has ruled that the detention of a Chicago man by immigration authorities is illegal. Ruben Torres Maldonado, whose 16-year-old daughter has a rare and advanced form of cancer, must get a bond hearing by Oct. 31. Torres was detained Oct. 18, and his attorneys are seeking his release. The judge said Friday the detention violates due process rights. But he said he couldn't order an immediate release. Torres' attorney sees this ruling as a win. The U.S. Department of Homeland Security alleges Torres has been living illegally in the U.S. for years. His daughter's treatment was interrupted because of the stress of his arrest.

The most widely used COVID-19 vaccines may offer a surprise benefit for some cancer patients by boosting their immune systems to help fight tumors. Research reported Wednesday in the journal Nature found that people with advanced lung or skin cancer lived longer if they received a Pfizer or Moderna shot within 100 days of starting a type of immunotherapy. The mRNA in these vaccines appears to enhance the immune system's response. Now the research team is preparing a more rigorous study of the potential connection, to see if mRNA vaccines should be deliberately paired with cancer drugs called checkpoint inhibitors.