Cordier gives an instance in which he successfully removed a full-grown child, the result of an ectopic gestation which had ruptured intraligamentally and had been retained nearly two years.
Lospichlerus gives an account of a mother carrying twins, extrauterine, for six years.

Mounsey of Riga, physician to the army of the Czarina, sent to the Royal Society in 1748 the bones of a fetus that had been extracted from one of the fallopian tubes after a lodgment of thirteen years.

Starkey Middleton read the report of a case of a child which had been taken out of the abdomen, having lain there nearly sixteen years, during which time the mother had borne four children.

It was argued at this time that boys were conceived on the right side and girls on the left, and in commenting on this Middleton remarks that in this case the woman had three boys and one girl after the right fallopian tube had lost its function.

Chester cites the instance of a fetus being retained fifty-two years, the mother not dying until her eightieth year.
Margaret Mathew carried a child weighing eight pounds in her abdomen for twenty-six years, and which after death was extracted.