A University of California, Riverside team of scientists has found that Toxoplasma gondii, a common parasite affecting up to ...

Some women with endometriosis develop blood-filled cysts called endometriomas. As with endometriosis, endometriomas affect women who are premenopausal as the condition is hormonally stimulated. These ...

Ovarian cysts are very common in people who menstruate, with an estimated 10% to 30% of women — and potentially more — developing at least one in their lifetime. These fluid-filled sacs develop in or ...

A branchial cleft cyst is a birth abnormality that occurs on one or both sides of the neck. This atypical tissue may form fluid-filled sacs or passages that drain fluid on the neck surface. These ...

A breast lump is a swelling or bump in the breast that many people find scary, but most lumps are not cancerous. They can be caused by harmless conditions like cysts, infections, or changes in ...

Tonsil cysts and tonsil cancer can cause similar symptoms. A doctor can differentiate between them with tests like imaging and biopsies. Your tonsils are lumps of lymph tissue at the back of your ...