What could cause bleeding a year after hysterectemy?

Vaginal lesions: Granulation tissue in the vagina or other vaginal lesions. Granulation tissue is the body's way of "overhealing" a wound.

Atrophic vaginitis: The most common cause of this symptom would be what is called "atrophic vaginitis, " the thinning of the vaginal wall that can occur in the absence of estrogen. Very rarely, there can be cancers of the vagina, which could also cause bleeding. Evaluation by your gynecologist will clarify the cause and provide appropriate treatment.