At the advent of each menstrual period the lips became much congested, and the recently-healed menstrual scars burst open anew.
Knaggs relates an interesting account of a sequel to an operation for ovarian disease.

Following the operation, there was a regular, painless menstruation every month, at which time the lower part of the wound re-opened, and blood issued forth during the three days of the catamenia.

McGraw illustrates vicarious menstruation by an example, the discharge issuing from an ovariotomy-scar, and Hooper cites an instance in which the vicarious function was performed by a sloughing ulcer.
Buchanan and Simpson describe "amenorrheal ulcers." Dupuytren speaks of denudation of the skin from a burn, with the subsequent development of vicarious catamenia from the seat of the injury.
There are cases on record in which the menstruation occurs by the rectum or the urinary tract.

Barbee illustrates this by a case in which cholera morbus occurred monthly in lieu of the regular menstrual discharge.

Barrett speaks of a case of vicarious menstruation by the rectum.