In its abdomen was found a fetus weighing almost two pounds and connected to the child by a cord resembling an umbilical cord.

This child was healthy for about nine months, and had a precocious longing for ardent spirits, and drank freely an hour before its death.
Blundell says that he knew "a boy who was literally and without evasion with child, for the fetus was contained in a sac communicating with the abdomen and was connected to the side of the cyst by a short umbilical cord; nor did the fetus make its appearance until the boy was eight or ten years old, when after much enlargement of pregnancy and subsequent flooding the boy died." The fetus, removed after death, on the whole not very imperfectly formed, was of the size of about six or seven months' gestation.

Bury cites an account of a child that had a second imperfectly developed fetus in its face and scalp.

There was a boy by the name of Bissieu who from the earliest age had a pain in one of his left ribs; this rib was larger than the rest and seemed to have a tumor under it.

He died of phthisis at fourteen, and after death there was found in a pocket lying against the transverse colon and communicating with it all the evidences of a fetus.
At the Hopital de la Charite in Paris, Velpeau startled an audience of 500 students and many physicians by saying that he expected to find a rudimentary fetus in a scrotal tumor placed in his hands for operation.
His diagnosis proved correct, and brought him resounding praise, and all wondered as to his reasons for expecting a fetal tumor.