As a general principle, the statute of limitations for medical malpractice claims in Massachusetts is 3 years from the date of the negligent act or omission which gives rise to the claim. However, under certain circumstances, the statute of limitations may be extended, or tolled, such as when minors or a death is involved. Also, if the negligent act was not reasonably knowable at the time, the limitations period may not begin to run until the person became aware of the negligence. This is...