A large blood cyst of the mitral valve: late presentation in an 80-year-old female

The ‘blood cyst’ or the ‘blood-filled cyst’ was first reported by Elsasser in 1844. It is relatively common in newborns under 6 months of age, but disappears spontaneously in most cases during infancy, a rare finding in young adults. We present a case of a blood cyst found in an 80-year-old woman …